My Xperia smartphone has no network coverage or mobile data connection

​​​​This closes running apps, frees up memory, and refreshes the system, often resolving the issue.

There are different ways to restart your phone, depending on your model:

• Long press the power button, then tap Restart in the pop-up menu.
• Press both volume buttons and the power button at the same time, then tap Restart in the pop-up menu.
• Press the volume up and power buttons at the same time, then tap Restart in the pop-up menu.

• After tapping Restart, your phone will restart automatically.
• Your phone may fail to restart if the battery level is low. In that case, connect your phone to a charger and try restarting again.

Having Airplane mode on will disable all network connections. To prevent mobile data issues, make sure you turn it off when not needed.

Via the pull-down menu

1. Swipe down on the home screen.
2. Tap  Airplane mode.

Via the Settings menu

1. Go to Settings → Network & Internet.
2. Tap the  Airplane mode switch to disable this function. 

Sometimes, your phone may not recognise when you're connected to a network. Simply turn your mobile data off and then on again to refresh the connection.

1. Swipe down on the home screen to access the Notification panel.
2. Tap Internet.
3. Tap the switch next to your network provider to enable or disable mobile data.

You can verify if your smartphone is connected to a network by checking its signal strength.

• Look for the signal strength icon  in the status bar. The more bars you see, the stronger the signal.
• If the signal is weak or missing, move to an open area or near a window.

Contact your network provider to ensure coverage in your location.

• This is especially important if you're in a low-signal area.
• There might also be a network outage in your area that could be impacting your mobile data connection.

It's important to choose a network type that's compatible with your SIM card. You can contact your network provider if you don't know which network types are supported.

1. The steps will depend on your menu options: 
   • Find and tap Settings → Network & Internet → Mobile network.
   • Find and tap Settings → Network & Internet → Mobile network → Advanced.
   • Find and tap Settings → Network & Internet → SIMs → Select a SIM.
     For dual SIM users: Select a SIM.
2. Tap Preferred network type and select the appropriate option (e.g., 5G, 4G, 3G).

This allows your phone to automatically connect to an available network.

1. Find and tap Settings → Network & Internet.
2. The next steps will depend on your menu options:
   • Tap Mobile network → Network operators → Automatic.
   • Tap Mobile network → Advanced → Automatically select network.
   • Tap Mobile network → Advanced → Automatically select network → Network.
   • Tap SIMs → Select a SIM → Automatically select network.

This lets you manually check for any available networks in your area.

1. Find and tap Settings → Network & Internet → Mobile network.
2. The next steps will depend on your menu options:
   • Find and tap Service providers → Search networks.
   • Find and tap Network operators → Search networks.
3. Select a network (if available).

Notes: 

• If you're using two SIM cards, select the one you want to use for mobile data.
• If you manually select a network, your phone will not search for other networks, even if you move out of range of the manually selected network.

If you're within range of a network you've connected to before, it may already be saved in your phone.

To see your saved networks:

• Find and tap Settings → Network & Internet → Internet → Saved networks.

This option resets your phone's mobile network settings, which can help resolve Internet and connection issues.

To reset your network settings:

• Find and tap Settings → System → Reset options → Reset Mobile Network Settings.

Resetting the APN can sometimes help resolve Internet and connection issues.

1. The steps will depend on your menu options:
   • Find and tap Settings → Network & Internet → SIMs → Select a SIM → Access Point Names.
   • Find and tap Settings → Network & Internet → Mobile network → Advanced → Access point names.
   • Find and tap Settings → Network & Internet → Mobile network → Access point names.
2. Tap the menu (three vertical dots) and select Reset to default.

It's possible your SIM card is faulty or isn't compatible with your phone.

To test this, insert your SIM card into another phone. If it works, the issue might be the original phone rather than the SIM itself.

For dual SIM users, placing your main SIM card (the SIM with mobile data) into a different card slot may resolve the issue.

Older SIM cards may be incompatible with newer phones. Likewise, if your SIM is faulty or damaged, you will need to replace it. In that case, contact your network provider for a replacement SIM.

• To register a new SIM card:
  • Find and tap Settings → Network & Internet → SIMs → Add SIM.
    You will have the option to set up an eSIM or transfer a SIM from another device.
• To insert a new SIM card:
  1. Find the SIM card tray on the edge of your phone.
  2. Use a SIM card ejector tool to pop the tray out.
  3. Insert the SIM card into the tray (or replace it if your phone only supports one SIM at a time).

STAMINA mode disables mobile data and Wi-Fi when the screen is turned off to save battery power.

To disable STAMINA mode

1. Find and tap Settings → Battery → STAMINA mode.

2. The next steps will depend on your menu options:
   • Tap STAMINA mode.
   • Tap Smart STAMINA.
   • Tap Use STAMINA mode.
   • Tap Turn on now.

To disable Ultra STAMINA mode

1. Swipe down on the home screen to access the Notification panel.
2. Tap Ultra STAMINA mode active.
3. Tap OK.

Notes:

• When STAMINA mode is enabled, you can set an activation schedule based on your phone's battery level.
• Your phone will restart after disabling Ultra STAMINA mode.
• Depending on the STAMINA level, different features will be restricted or disabled to reduce battery consumption.

It's possible a third-party app could be interfering with network settings. If the network works in Safe Mode, a third-party app may be the issue.

To test this, you can try restarting your phone in Safe Mode.

1. Press and hold the volume and power buttons at the same time.
2. Press and hold Power off.
3. On the Reboot to safe mode screen, select OK.

It's important to keep your phone updated with the latest software to ensure optimal performance.

To manually check for a software update:

• Find and tap Settings → System → Software update.

To set up automatic downloads for system updates

1. Find and tap Settings → System → Software update.
2. Tap the three vertical dots, then tap Settings → Auto update system.
3. Select your preferred option.

To enable or disable automatic updates for apps

1. Find and tap Settings → System → Software update.
2. Tap the three vertical dots, then tap Settings → Auto-update apps.
3. Select your preferred option.

If all else fails, try performing a factory data reset.

1. The steps will depend on your menu options:
   • Find and tap Settings → System → Reset options.
   • Find and tap Settings → System → Reset. 
     Note: If you don't see a reset option under System, check the Advanced settings.
2. The next steps will also depend on your menu options:
   • Tap Erase all data (factory reset) → Erase all data.
   • Tap Erase all data (factory reset) → Reset phone.
   • Tap Factory data reset → Reset phone.
3. If required, enter your screen unlock pattern, password, or PIN to continue.
4. To confirm, tap Erase all data or Erase everything.