What do I do if I have no service on my iPhone?
If you see No Service or Searching on your iPhone or iPad (Wi-Fi + Cellular), or if you can't connect to a mobile network or mobile data, find out what to do. Make sure you're in an area with mobile network coverage. Turn mobile data off and then back on again. Go to Settings, then tap Cellular or Mobile Data.
How to fix “no service on iPhone 4” error?
Insert your SIM card receiving no service error and head over to Settings > General > Reset > Reset Network Settings. All the solutions above are effective in fixing no service on iPhone 4, iPhone 4s, iPhone 5, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE, iPhone 7, and iPhone 7 Plus.
How to fix iPhone won't turn on?
The first option you should try is rebooting your iPhone. Press and hold the 'Sleep/Wake' button on your iPhone. When you see the 'Slide to turn off' bar at the top, slide it right to turn off your device. Now, restart your iPhone and check if the no service issue on your iPhone has been fixed or not.
What to do if your iPhone keeps disconnecting from the Internet?
There are a couple of things to try: Turn off Celular data by going to Settings > Cellular. After that, enable the Airplane mode and leave it on for 15-20 seconds. Restart your iPhone Reinsert your SIM Card Reset network settings. Go to Settings > General > Reset > Reset network settings.