Network issue
I bought my iphone 7 plus from india , i was used vodafone sim there . When i came to UK , now I’m using Lycamobile, but my network doesn’t come.
i’ve also tried other sims. But it is still not working.
iPhone 7 Plus, iOS 12
Question marked as
Perhaps your device is locked by your previous carrier.
See here what you can do:
How to unlock your iPhone for use with a different carrier - Apple Support
Regards
Giulio