iPhone's SIM card is not working when it works in another phone
Sim card noy working in iphone but in other phone it is working fine
[Re-Titled by Moderator]
Original Title: Sim card not working
Sim card noy working in iphone but in other phone it is working fine
[Re-Titled by Moderator]
Original Title: Sim card not working
If you see No Service or Searching on your iPhone or iPad
If you see No Service or Searching on your iPhone or iPad ...

Remove your SIM card from the SIM card tray and then put the SIM card back. ... Make sure that the SIM tray closes completely and isn't loose. If you use a SIM tray from a different model iPhone, iPad, or from another phone manufacturer, it might not fit properly.
If you see 'invalid SIM' or 'no SIM' on your iPhone or iPad ...

Learn what to do if you see a SIM not supported alert.

If you see No Service, Searching, or SOS on your iPhone or iPad
If you see No Service, Searching, or SOS on your iPhone or iPad

To be able to use any SIM across the globe you must have "No SIM Restriction" against Network Provider Lock. Please refer to the pic below.

If you see No Service or Searching in the status bar on your iPhone or iPad (Wi-Fi + Cellular), your device isn't connected to a cellular network. If you see SOS or "SOS only" in the status bar, your device can still make emergency calls.
If you see No Service, Searching, or SOS on your iPhone or iPad
iPhone's SIM card is not working when it works in another phone