Galaxy Z fold 5 network not recognising of service provider airtel in India after system Upgrade to One UI 6

[murarimanoj]

Phone: Galaxy Z fold 5 Unlocked verison bought in USA. 
Carrier: Airtel - India 
Sim slots tested: Physical sim and eSim
Affects: Calls, messages and mobile data is unusable.
Issue:
After System Update the phone is showing emergency calls only or No service.
Tested scenarios:
1. Changed physical sim
2. Converted to eSim.
3. Did factory reset device
4. wipe cache partition

[Samsung_Moderator · Accepted solution]

Hello, Welcome to the Community. We understand how frustrating it is when you are unable to connect to your service provider's network. If you are unable to connect to your provider's network, try the troubleshooting steps here: https://www.samsung.com/uk/support/mobile-devices/how-to-troubleshoot-mobile-data-issues/ 

We also recommend reaching out to your service provider for assistance, as they are responsible for the services.

Additionally, we recommend submitting an error report: https://www.samsung.com/ae/support/mobile-devices/raising-an-error-report-via-samsung-members-app/ 

If the troubleshooting is not helpful, the phone will need to be evaluated by a certified technician. You can use the following link to find a list of service centers in the U.S. that can do the repair: http://www.samsung.com/us/support/service/location or by contacting customer support at 1-800-726-7864.