Network signal keeps dropping and SOS only

shyamal64 Said:

"Network signal keeps dropping and SOS only: iphone 12 Pro Max - network keeps dropping and then changed to no network and it shows only SOS. Took out SIM card from iPhone and put in another Samsung mobile. Working fine on another phone. Please help me out if knows anyone"

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Contact your Carrier:

Being your Cellular services are not working, you need to contact your Carrier.

Troubleshooting Cellular Errors:

A. Start with these Links:

• If you can't Make or Receive Calls on your iPhone - Apple Support
• If you See No Service, Searching, or SOS on your iPhone or iPad - Apple Support
• If you See a Cellular, Ultra Wideband, or Apple Pay Issue Message After an iOS Update or Restart - Apple Support

B. Install a Cellular Update:

It might be prompting you for a cellular update to install. So, go here for that. Update your Carrier Settings Manually on your iPhone or iPad - Apple Support

C. "No Service":

If "No Service" is shown on the top-left corner of your screen, go here to fix that: If you See No Service or Searching on your iPhone or iPad - Apple Support