Why Aren’t My Calls Going Through? Troubleshooting Guide

Are you experiencing issues where “why aren’t my calls going through” on your mobile phone? This frustrating problem, which impacts call connectivity and phone service, can stem from various sources. At why.edu.vn, we provide you with a detailed guide to diagnose and resolve these issues, ensuring seamless communication. Understanding these root causes and solutions can greatly improve your cellular service experience, helping you maintain reliable phone connectivity.

1. Understanding the Core Reasons: Why Calls Fail

Before diving into troubleshooting, it’s important to understand the common reasons “why aren’t my calls going through”. These reasons can be broadly categorized into network-related, device-related, and account-related issues. Addressing each of these areas systematically will help identify and resolve the problem effectively. Ensuring a stable phone connection involves understanding these potential pitfalls.

1.1 Network-Related Issues

Network-related issues are among the most common causes of call failures. These problems often arise from factors outside your direct control but can significantly impact your ability to make and receive calls. Recognizing these issues can help you take the appropriate steps to resolve them. A strong cell signal is crucial for successful calls.

1.1.1 Signal Strength Problems

Weak signal strength is a primary culprit. Mobile phones rely on a consistent and strong connection to cellular towers to maintain call quality. Areas with poor coverage, such as rural locations or inside buildings with thick walls, often experience weak signals. Obstacles like hills, trees, and buildings can also interfere with signal transmission.

Solutions:

• Move to an Area with Better Coverage: Try moving to a location with a clearer line of sight to a cell tower. Open spaces or higher elevations often provide better signal strength.
• Use a Signal Booster: Signal boosters amplify existing signals, improving connectivity in areas with weak coverage. These devices can be particularly useful in homes or offices where the signal is consistently poor.
• Wi-Fi Calling: Enable Wi-Fi calling on your device. This feature allows you to make and receive calls over a Wi-Fi network, bypassing the cellular network altogether. It’s an excellent solution for areas where the cellular signal is weak but Wi-Fi is available.

1.1.2 Network Congestion

Network congestion occurs when too many users are trying to access the same cellular resources simultaneously. This is especially common during peak hours or at crowded events. The overloaded network can lead to dropped calls or an inability to connect.

Solutions:

• Try Again Later: If network congestion is the issue, the simplest solution is to try making the call again after a short delay. Peak congestion times typically subside, allowing for better connectivity.
• Use Wi-Fi Calling: As mentioned earlier, Wi-Fi calling can bypass the congested cellular network. Connecting to a Wi-Fi network shifts your call traffic away from the cellular towers, improving call reliability.
• Prioritize Calls: Some carriers offer plans that prioritize call traffic for certain users. If you frequently experience congestion, consider upgrading to a plan that offers this feature.

1.1.3 Carrier Outages

Mobile carriers occasionally experience outages due to technical issues, maintenance, or natural disasters. These outages can affect entire regions or specific cell towers, preventing users from making or receiving calls.

Solutions:

• Check Carrier Status: Most carriers have websites or social media accounts where they post updates about outages. Check these resources to see if there is a known issue in your area.
• Contact Carrier Support: Contact your carrier’s customer support line to inquire about any outages. They can provide information on the extent of the outage and estimated restoration times.
• Use a Different Network: If possible, use a device connected to a different carrier’s network to make essential calls. This can be a temporary workaround until your primary carrier’s service is restored.

1.1.4 Roaming Issues

When traveling, your phone may connect to a different carrier’s network through roaming agreements. Sometimes, issues with these agreements or incorrect settings can prevent calls from going through.

Solutions:

• Enable Roaming: Ensure that data roaming is enabled in your phone’s settings. This allows your device to connect to available networks while abroad.
• Manual Network Selection: Manually select a preferred network in your phone’s settings. This can help avoid automatic connections to unstable or incompatible networks.
• Check Roaming Charges: Contact your carrier to confirm roaming charges and ensure that your account is set up to allow international or domestic roaming.

1.2 Device-Related Issues

Device-related issues can also prevent calls from going through. These problems often stem from software glitches, hardware malfunctions, or incorrect settings on your device. Regularly maintaining your device and understanding its settings can help mitigate these issues.

1.2.1 Software Glitches

Software glitches can disrupt the normal functioning of your phone, leading to call failures. These glitches can be caused by bugs in the operating system, conflicts between apps, or corrupted data.

Solutions:

• Restart Your Device: A simple restart can often resolve temporary software glitches. Turn your phone off, wait a few seconds, and then turn it back on.
• Update Your Software: Keep your phone’s operating system updated. Software updates often include bug fixes and performance improvements that can resolve call-related issues.
• Reset Network Settings: Resetting network settings can resolve issues caused by corrupted network configurations. This will erase saved Wi-Fi passwords and VPN settings, so be sure to have that information handy. To do this, go to Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings.

1.2.2 Incorrect Settings

Incorrect settings on your phone can prevent calls from going through. These settings may include call forwarding, call barring, or other features that unintentionally block incoming or outgoing calls.

Solutions:

• Check Call Forwarding: Ensure that call forwarding is disabled if you want to receive calls directly. Go to Settings > Phone > Call Forwarding and make sure it’s turned off.
• Check Blocked Numbers: Verify that the number you’re trying to call isn’t blocked. Go to Settings > Phone > Blocked Contacts and remove any numbers that shouldn’t be blocked.
• Check Do Not Disturb Mode: Make sure Do Not Disturb mode is turned off. This mode silences incoming calls and notifications. Go to Settings > Focus > Do Not Disturb and ensure it’s disabled.

1.2.3 Hardware Issues

Hardware issues, such as a malfunctioning antenna or damaged SIM card, can also prevent calls from going through. These problems require professional repair or replacement of the faulty component.

Solutions:

• Check SIM Card: Ensure that your SIM card is properly inserted and undamaged. Remove the SIM card, inspect it for damage, and reinsert it securely.
• Test with Another Phone: If possible, test your SIM card in another phone to see if the problem persists. This can help determine whether the issue is with the SIM card or the phone itself.
• Professional Repair: If you suspect a hardware issue, take your phone to a professional repair service. They can diagnose and repair or replace faulty components.

1.2.4 Airplane Mode Activated

Activating Airplane Mode disables all wireless communications on your phone, including cellular connections. This prevents calls from going through until Airplane Mode is deactivated.

Solutions:

• Turn Off Airplane Mode: Ensure that Airplane Mode is turned off. Go to Settings and toggle Airplane Mode to the off position.
• Verify Status: Double-check the status bar to ensure that the Airplane Mode icon is not displayed. The icon indicates that Airplane Mode is active.
• Restart After Deactivation: After deactivating Airplane Mode, restart your phone to ensure that cellular services are fully restored.

1.3 Account-Related Issues

Account-related issues can prevent calls from going through. These problems often involve billing issues, account restrictions, or outdated account information. Resolving these issues requires contacting your mobile carrier and ensuring that your account is in good standing.

1.3.1 Billing Problems

Unpaid bills or billing disputes can lead to service suspension, preventing you from making or receiving calls. Mobile carriers typically suspend service until the outstanding balance is paid or the dispute is resolved.

Solutions:

• Check Your Account Balance: Check your account balance to ensure that your bill is up to date. Most carriers offer online portals or mobile apps where you can view your account status.
• Pay Outstanding Bills: Pay any outstanding bills promptly to restore service. Many carriers offer online payment options or payment plans to help manage your account.
• Contact Customer Support: Contact your carrier’s customer support line to resolve any billing disputes or to set up a payment plan.

1.3.2 Account Restrictions

Mobile carriers may impose restrictions on accounts for various reasons, such as suspected fraud, violation of terms of service, or specific plan limitations. These restrictions can prevent calls from going through.

Solutions:

• Contact Customer Support: Contact your carrier’s customer support line to inquire about any account restrictions. They can provide information on the reason for the restriction and the steps required to remove it.
• Verify Account Information: Ensure that your account information is accurate and up to date. Incorrect information can sometimes trigger account restrictions.
• Adhere to Terms of Service: Review your carrier’s terms of service to ensure that you are not violating any policies. Common violations include excessive data usage or unauthorized device modifications.

1.3.3 Outdated Account Information

Outdated account information, such as an incorrect address or outdated payment details, can lead to service disruptions. Carriers use this information to verify your identity and maintain accurate records.

Solutions:

• Update Your Information: Update your account information through your carrier’s online portal or by contacting customer support. Ensure that your address, payment details, and contact information are accurate.
• Verify Contact Details: Verify that your contact details, such as your phone number and email address, are correct. Carriers use this information to send important notifications about your account.
• Review Account Settings: Regularly review your account settings to ensure that all information is current and accurate. This can help prevent service disruptions and ensure that you receive important updates.

1.3.4 SIM Card Activation Issues

If you recently switched phones or carriers, your SIM card may not be properly activated. This can prevent calls from going through until the SIM card is registered and activated on the network.

Solutions:

• Contact Carrier Support: Contact your carrier’s customer support line to activate your SIM card. They will guide you through the activation process.
• Online Activation: Some carriers offer online SIM card activation through their website or mobile app. Follow the instructions provided to activate your SIM card.
• Verify SIM Card Status: Verify that your SIM card is properly inserted and recognized by your phone. You can usually check this in your phone’s settings under the SIM card or mobile network section.

2. Step-by-Step Troubleshooting Guide

When you ask, “why aren’t my calls going through,” a systematic approach can help you identify and fix the issue. Here’s a step-by-step troubleshooting guide to help you resolve call failure problems. Use this guide to fix mobile connection issues.

2.1 Basic Checks

Start with these basic checks to rule out common and easily fixable issues. These checks can quickly resolve simple problems.

2.1.1 Restart Your Phone

Restarting your phone can resolve temporary software glitches and clear out background processes that may be interfering with call functionality.

How to Restart:

• iPhone: Press and hold either volume button and the side button until the power-off slider appears. Drag the slider, then wait 30 seconds for your device to turn off. To turn your device back on, press and hold the side button until you see the Apple logo.
• Android: Press and hold the power button until the power options appear. Tap “Restart” or “Reboot.” If those options aren’t available, press and hold the power button until the device turns off, then press it again to turn it back on.

2.1.2 Check Signal Strength

Ensure that you have adequate signal strength. A weak signal can prevent calls from going through.

How to Check:

• Look at the Signal Bars: Check the signal bars on your phone’s status bar. If there are few or no bars, you have a weak signal.
• Move to a Better Location: Try moving to an area with a clearer line of sight to a cell tower. Open spaces or higher elevations often provide better signal strength.

2.1.3 Toggle Airplane Mode

Turning Airplane Mode on and off can refresh your phone’s connection to the cellular network.

How to Toggle Airplane Mode:

• Open Settings: Go to your phone’s settings menu.
• Toggle Airplane Mode: Turn on Airplane Mode, wait for about 10 seconds, and then turn it off.
• Wait for Connection: Allow your phone a few moments to reconnect to the cellular network.

2.2 Network Settings

If the basic checks don’t resolve the issue, examine your network settings to ensure they are correctly configured. Correct network settings are essential for reliable connectivity.

2.2.1 Reset Network Settings

Resetting network settings can resolve issues caused by corrupted network configurations.

How to Reset Network Settings:

• iPhone: Go to Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings.
• Android: Go to Settings > General Management > Reset > Reset Network Settings.

Note: This will erase saved Wi-Fi passwords, so be sure to have them handy.

2.2.2 Check Preferred Network Type

Ensure that your phone is set to the correct network type (e.g., 4G, LTE, 5G). Selecting the wrong network type can cause connectivity issues.

How to Check Preferred Network Type:

• iPhone: Go to Settings > Cellular > Cellular Data Options > Voice & Data and choose the appropriate network type.
• Android: Go to Settings > Connections > Mobile Networks > Network Mode and select the appropriate network type.

2.2.3 Manual Network Selection

Manually selecting a network can help avoid automatic connections to unstable or incompatible networks, particularly when roaming.

How to Manually Select a Network:

• iPhone: Go to Settings > Cellular > Network Selection and turn off Automatic. Your phone will then display a list of available networks. Select your carrier’s network.
• Android: Go to Settings > Connections > Mobile Networks > Network Operators and search for available networks. Select your carrier’s network.

2.3 Call Settings

Incorrect call settings can prevent calls from going through. Check these settings to ensure they are properly configured.

2.3.1 Check Call Forwarding

Ensure that call forwarding is disabled if you want to receive calls directly.

How to Check Call Forwarding:

• iPhone: Go to Settings > Phone > Call Forwarding and make sure it’s turned off.
• Android: Go to Phone app > Menu > Settings > Call Forwarding and make sure it’s turned off.

2.3.2 Check Blocked Numbers

Verify that the number you’re trying to call isn’t blocked.

How to Check Blocked Numbers:

• iPhone: Go to Settings > Phone > Blocked Contacts and remove any numbers that shouldn’t be blocked.
• Android: Go to Phone app > Menu > Settings > Blocked Numbers and remove any numbers that shouldn’t be blocked.

2.3.3 Check Do Not Disturb Mode

Make sure Do Not Disturb mode is turned off, as this mode silences incoming calls and notifications.

How to Check Do Not Disturb Mode:

• iPhone: Go to Settings > Focus > Do Not Disturb and ensure it’s disabled.
• Android: Go to Settings > Sound & Vibration > Do Not Disturb and ensure it’s turned off.

2.4 Software Updates

Keeping your phone’s software up to date is crucial for optimal performance and bug fixes.

2.4.1 Check for iOS Updates

Ensure that your iPhone is running the latest version of iOS.

How to Check for iOS Updates:

• Go to Settings > General > Software Update. If an update is available, download and install it.

2.4.2 Check for Android Updates

Ensure that your Android phone is running the latest version of Android.

How to Check for Android Updates:

• Go to Settings > System > System Update. If an update is available, download and install it.

2.5 SIM Card Checks

The SIM card is essential for connecting to the mobile network. Ensure it is properly inserted and functioning correctly.

2.5.1 Reinsert SIM Card

Remove the SIM card, inspect it for damage, and reinsert it securely.

How to Reinsert SIM Card:

• Turn off your phone.
• Use a SIM card ejector tool (or a paperclip) to open the SIM card tray.
• Remove the SIM card, inspect it, and reinsert it carefully.
• Ensure the SIM card is properly seated in the tray.
• Close the SIM card tray and turn your phone back on.

2.5.2 Test with Another Phone

If possible, test your SIM card in another phone to see if the problem persists. This can help determine whether the issue is with the SIM card or the phone itself.

How to Test with Another Phone:

• Turn off both phones.
• Remove the SIM card from your phone and insert it into another phone.
• Turn on the other phone and try making a call.
• If the call goes through on the other phone, the issue is likely with your original phone.

2.6 Carrier Contact

If none of the above steps resolve the issue, contact your mobile carrier for further assistance. They can diagnose account-specific or network-related problems.

2.6.1 Contact Customer Support

Call your carrier’s customer support line and explain the issue. Be prepared to provide details about your account and the troubleshooting steps you’ve already taken.

How to Contact Customer Support:

• Visit your carrier’s website for their customer support phone number.
• Use your carrier’s mobile app to access customer support.

2.6.2 Check for Outages

Inquire about any known outages in your area. Carriers may be experiencing technical issues that are preventing calls from going through.

How to Check for Outages:

• Ask the customer support representative about any outages.
• Check your carrier’s website or social media accounts for outage updates.

By following these steps, you can systematically troubleshoot and resolve most issues preventing calls from going through. Remember to test after each step to see if the problem has been resolved.

3. Advanced Troubleshooting Techniques

If basic troubleshooting doesn’t solve the problem when you ask, “why aren’t my calls going through,” more advanced techniques may be necessary. These methods involve deeper analysis and adjustments to your device and network settings. This section provides a detailed look at these advanced techniques.

3.1 Analyzing Call Logs

Call logs can provide valuable insights into why calls are failing. By examining these logs, you can identify patterns or error messages that point to specific issues.

3.1.1 Accessing Call Logs

Accessing call logs depends on your device and carrier. Here’s how to access them on different platforms:

• Android:
  1. Open the Phone app.
  2. Tap the three dots in the upper right corner to open the menu.
  3. Select “Call History.”
  4. You can view details of each call, including the time, duration, and status (e.g., successful, failed).
• iPhone:
  1. Open the Phone app.
  2. Tap “Recents” at the bottom.
  3. Tap the “i” icon next to a call for more details.
  4. Note that iPhones do not provide detailed error messages in the same way as Android devices.
• Carrier Website/App:
  1. Many carriers provide detailed call logs on their website or through their mobile app.
  2. Log in to your account and navigate to the call history or call logs section.

3.1.2 Interpreting Call Log Information

Once you have accessed the call logs, look for the following information:

• Failed Calls: Identify calls that failed to connect. These will often be marked with a specific status or icon.
• Error Messages: Some devices or carrier logs may provide error messages associated with failed calls. These messages can provide clues about the cause of the problem. Common error messages include:
  • “Call Failed”: A generic error indicating the call could not be completed.
  • “Network Busy”: Indicates the network is congested.
  • “Number Unreachable”: Suggests the dialed number is not in service or is temporarily unavailable.
  • “Restricted Number”: Indicates the number is blocked or restricted.
• Call Duration: Check the duration of failed calls. Calls that disconnect immediately may indicate a network or device issue.
• Frequency: Note how often calls are failing. If failures are frequent and consistent, this suggests a systemic problem.

3.1.3 Using Call Logs for Troubleshooting

Use the information from call logs to guide your troubleshooting efforts:

• Identify Patterns: Look for patterns in the failed calls. Are they happening at specific times of day or in certain locations? This can help identify network congestion or coverage issues.
• Research Error Messages: Search online for the error messages you find in the call logs. This can provide more information about the cause of the problem and potential solutions.
• Contact Carrier Support: Share the call log information with your carrier’s support team. They may be able to use this data to diagnose network issues or account restrictions.

3.2 SIM Card Diagnostics

The SIM card is a critical component for connecting to the mobile network. If you suspect a SIM card issue, perform these diagnostics:

3.2.1 Checking SIM Card Status

Verify that your phone recognizes the SIM card and that it is properly activated.

How to Check SIM Card Status:

• Android:
  1. Go to Settings > About Phone > Status > SIM Status.
  2. Check the “SIM Card Status” field. It should indicate that the SIM card is active and recognized.
• iPhone:
  1. Go to Settings > General > About.
  2. Scroll down to the “SIM Card” section.
  3. Check that the SIM card information is displayed. If it says “No SIM” or “SIM Not Inserted,” the phone is not recognizing the SIM card.

3.2.2 Cleaning the SIM Card

Dust or debris on the SIM card can interfere with its connection to the phone. Clean the SIM card carefully to ensure a good connection.

How to Clean the SIM Card:

1. Turn off your phone.
2. Remove the SIM card.
3. Use a soft, dry cloth to gently wipe the SIM card.
4. Avoid using liquids or abrasive materials.
5. Reinsert the SIM card and turn your phone back on.

3.2.3 Testing SIM Card with Another Device

If possible, test your SIM card in another phone to see if the problem persists. This can help determine whether the issue is with the SIM card or the phone itself.

How to Test SIM Card with Another Device:

1. Turn off both phones.
2. Remove the SIM card from your phone and insert it into another phone.
3. Turn on the other phone and try making a call.
4. If the call goes through on the other phone, the issue is likely with your original phone.
5. If the call fails on the other phone, the issue is likely with the SIM card.

3.2.4 Contacting Carrier for SIM Replacement

If you suspect that your SIM card is faulty, contact your carrier to request a replacement. They can provide a new SIM card that is properly activated and compatible with your account.

How to Contact Carrier for SIM Replacement:

1. Call your carrier’s customer support line.
2. Explain the issue and that you suspect a faulty SIM card.
3. Follow their instructions for requesting a replacement SIM card.
4. Once you receive the new SIM card, follow the activation instructions provided by your carrier.

3.3 Network Mode Configuration

Configuring the network mode on your phone can improve call reliability, especially in areas with varying network coverage.

3.3.1 Understanding Network Modes

Mobile networks operate on different modes, including 2G, 3G, 4G, and 5G. Each mode offers different levels of speed and coverage. Selecting the appropriate network mode can improve call quality and connectivity.

• 2G (GSM/CDMA): Older network technology providing basic voice and text services. It offers the widest coverage but the slowest speeds.
• 3G (UMTS/EVDO): An improvement over 2G, offering faster data speeds and better voice quality.
• 4G (LTE): The current standard for mobile networks, providing fast data speeds and improved voice quality.
• 5G: The latest generation of mobile networks, offering ultra-fast data speeds and low latency.

3.3.2 Selecting the Optimal Network Mode

Choose the network mode that provides the best balance of coverage and speed in your area.

How to Select the Optimal Network Mode:

• Android:
  1. Go to Settings > Connections > Mobile Networks > Network Mode.
  2. Select the network mode that is most suitable for your area. Options may include “4G/3G/2G (Auto connect),” “3G/2G (Auto connect),” or “2G only.”
  3. If you are in an area with strong 4G coverage, select “4G/3G/2G (Auto connect)” for the best performance.
  4. If you are in an area with weak 4G coverage, select “3G/2G (Auto connect)” to prioritize coverage over speed.
• iPhone:
  1. Go to Settings > Cellular > Cellular Data Options > Voice & Data.
  2. Select the network mode that is most suitable for your area. Options may include “LTE,” “4G,” or “3G.”
  3. If you are in an area with strong LTE coverage, select “LTE” for the best performance.
  4. If you are in an area with weak LTE coverage, select “4G” or “3G” to prioritize coverage over speed.

3.3.3 Testing Different Network Modes

Experiment with different network modes to see which one provides the most reliable call connectivity in your area.

How to Test Different Network Modes:

1. Select a network mode.
2. Make several test calls to different numbers.
3. Note the call quality and reliability.
4. Repeat the process with different network modes.
5. Choose the network mode that provides the best overall performance.

3.4 Resetting to Factory Settings

If all other troubleshooting steps fail, resetting your phone to factory settings may resolve the issue. This will erase all data and settings on your phone, so be sure to back up your data first.

3.4.1 Backing Up Your Data

Before resetting your phone, back up all important data, including contacts, photos, videos, and documents.

How to Back Up Your Data:

• Android:
  1. Go to Settings > System > Backup.
  2. Turn on “Back up to Google Drive.”
  3. Ensure that all important data is selected for backup.
• iPhone:
  1. Go to Settings > [Your Name] > iCloud > iCloud Backup.
  2. Turn on “iCloud Backup.”
  3. Tap “Back Up Now” to start the backup process.

3.4.2 Performing a Factory Reset

Follow these steps to reset your phone to factory settings:

How to Perform a Factory Reset:

• Android:
  1. Go to Settings > System > Reset Options > Erase All Data (Factory Reset).
  2. Confirm that you want to erase all data.
  3. Wait for the reset process to complete.
• iPhone:
  1. Go to Settings > General > Transfer or Reset iPhone > Erase All Content and Settings.
  2. Confirm that you want to erase all content and settings.
  3. Wait for the reset process to complete.

3.4.3 Restoring Your Data

After the factory reset is complete, restore your data from the backup.

How to Restore Your Data:

• Android:
  1. Follow the on-screen instructions to set up your phone.
  2. When prompted, sign in to your Google account.
  3. Choose the backup you want to restore from.
• iPhone:
  1. Follow the on-screen instructions to set up your phone.
  2. When prompted, choose “Restore from iCloud Backup.”
  3. Sign in to your iCloud account and choose the backup you want to restore from.

By following these advanced troubleshooting techniques, you can diagnose and resolve more complex issues preventing calls from going through. Remember to back up your data before performing a factory reset.

4. Preventive Measures to Ensure Reliable Call Connectivity

To minimize the chances of experiencing call failures, implementing preventive measures is crucial. These measures involve regular maintenance of your device, proactive management of your account, and adopting best practices for network usage. This section provides a detailed guide to these preventive strategies.

4.1 Regular Device Maintenance

Consistent maintenance of your mobile device can significantly reduce the likelihood of call connectivity issues. This includes keeping your software updated, managing storage, and ensuring your device is in good physical condition.

4.1.1 Keep Software Updated

Regularly updating your device’s operating system and apps is essential for optimal performance. Software updates often include bug fixes, security patches, and performance improvements that can resolve call-related issues.

How to Keep Software Updated:

• Enable Automatic Updates:
  • Android: Go to Settings > System > System Update > tap the three dots in the upper right corner > select “Auto Update.”
  • iPhone: Go to Settings > General > Software Update > Customize Automatic Updates, then turn on both “Download iOS Updates” and “Install iOS Updates.”
• Manually Check for Updates:
  • Android: Go to Settings > System > System Update and tap “Check for Update.”
  • iPhone: Go to Settings > General > Software Update.

4.1.2 Manage Storage

Insufficient storage space can cause performance issues, including call failures. Regularly manage your device’s storage by deleting unnecessary files and apps.

How to Manage Storage:

• Remove Unused Apps:
  • Android: Go to Settings > Apps > select an app > tap “Uninstall.”
  • iPhone: Touch and hold an app on the Home Screen, tap “Remove App,” then tap “Delete App.”
• Delete Large Files:
  • Android: Go to Files or Settings > Storage, and delete large videos, photos, and documents.
  • iPhone: Go to Settings > General > iPhone Storage, and delete large files.
• Use Cloud Storage:
  • Store photos, videos, and documents in cloud services like Google Drive, Dropbox, or iCloud to free up space on your device.

4.1.3 Monitor Battery Health

A degraded battery can cause performance issues and unexpected shutdowns, potentially leading to call failures. Monitor your battery health and consider replacing the battery if it’s significantly degraded.

How to Monitor Battery Health:

• Android:
  • Some Android devices have built-in battery health monitoring tools. Check your device’s settings menu for battery health information.
  • Use third-party apps like AccuBattery to monitor battery health.
• iPhone:
  • Go to Settings > Battery > Battery Health to check the maximum capacity of your battery.
  • If the maximum capacity is significantly reduced (e.g., below 80%), consider replacing the battery.

4.1.4 Physical Condition

Protect your phone from physical damage, as hardware issues can cause call failures. Use a protective case and screen protector, and avoid exposing your phone to extreme temperatures or moisture.

How to Maintain Physical Condition:

• Use a Protective Case:
  • A sturdy case can protect your phone from drops and impacts.
• Apply a Screen Protector:
  • A screen protector can prevent scratches and cracks on the screen.
• Avoid Extreme Conditions:
  • Keep your phone away from extreme temperatures, moisture, and direct sunlight.

4.2 Proactive Account Management

Staying on top of your account details and billing can prevent service disruptions that lead to call failures.

4.2.1 Keep Contact Information Updated

Ensure that your contact information with your mobile carrier is accurate and up-to-date. This includes your phone number, email address, and physical address.

How to Keep Contact Information Updated:

• Online Account Portal:
  • Log in to your account through your carrier’s website or mobile app and update your contact information.
• Customer Support:
  • Contact your carrier’s customer support line to update your contact information.

4.2.2 Monitor Billing and Payments

Regularly monitor your billing statements and payment history to ensure there are no discrepancies or outstanding balances.

How to Monitor Billing and Payments:

• Online Account Portal:
  • Log in to your account through your carrier’s website or mobile app and review your billing statements and payment history.
• Set Up Payment Alerts:
  • Enable payment alerts to receive notifications about upcoming bills and payment confirmations.

4.2.3 Review Account Settings

Periodically review your account settings to ensure that all features and services are correctly configured.

How to Review Account Settings:

• Online Account Portal:
  • Log in to your account through your carrier’s website or mobile app and review your account settings, including call forwarding, voicemail, and data usage.
• Contact Customer Support:
  • Contact your carrier’s customer support line to review your account settings and ensure they meet your needs.

4.3 Network Usage Best Practices

Adopting best practices for network usage can improve call connectivity and prevent network-related issues.

4.3.1 Use Wi-Fi Calling When Available

Enable Wi-Fi calling on your device and use it whenever possible, especially in areas with weak cellular coverage.

How to Enable Wi-Fi Calling:

• Android: Go to Settings > Connections > Wi-Fi Calling and turn it on.
• iPhone: Go to Settings > Phone > Wi-Fi Calling and turn on “Wi-Fi Calling on This iPhone.”

4.3.2 Avoid Peak Hours

Try to avoid making calls during peak hours when network congestion is highest. If possible, schedule calls for off-peak times.

How to Avoid Peak Hours:

• Identify Peak Hours:
  • Peak hours typically occur during commute times (e.g., 8 AM to 9 AM and 5 PM to 6 PM) and lunch breaks (e.g., 12 PM to 1 PM).
• Schedule Calls for Off-Peak Times:
  • Schedule calls