How to resolve cellular issues detected

There are a few steps you can take to try and resolve cellular issues on your iPhone:

1. Make sure that your iPhone is up to date with the latest version of iOS. To check for updates, go to Settings > General > Software Update.
2. Restart your iPhone. This can often fix minor issues with your phone's connectivity. To restart your iPhone, press and hold the power button (also known as the sleep/wake button) until the "Slide to Power Off" slider appears. Drag the slider to turn off your iPhone, then press and hold the power button again until you see the Apple logo.
3. Check for a carrier settings update. Carrier settings updates can resolve issues with your iPhone's connection to your cellular network. To check for a carrier update, go to Settings > General > About. If an update is available, follow the prompts to install it.
4. Make sure that your iPhone is not in Airplane Mode. To turn off Airplane Mode, go to Settings > Airplane Mode and toggle the switch off.
5. Toggle cellular data off and on again. To do this, go to Settings > Cellular > Cellular Data, and toggle the switch off and then on again.
6. Reset your network settings. Resetting your network settings can resolve issues with your iPhone's connectivity. To reset your network settings, go to Settings > General > Reset > Reset Network Settings. Keep in mind that resetting your network settings will also reset any Wi-Fi networks and passwords that you have saved on your iPhone.
7. Check with your cellular carrier to see if there are any outages or issues in your area. If there are, there may not be much you can do except wait for the issue to be resolved.
8. If none of these steps resolve the issue, it's possible that there is a hardware problem with your iPhone. In this case, you may need to take your phone to an Apple store or authorized repair center for further diagnosis and repair.