Chosen Solution

I had the back Glass of my iphone x repaired. The service seems to be randomly dropping, and conenting, I am not sure what happened, but the technician told me the frame had cracked in two places while attempting to remove the back glass. Does the frame/ housing play a role with my phone getting service?? should i have him change the frame?

No but if he was careless enough to break the frame of your phone during repair he was probably also careless enough to damage the antenna. I would take it somewhere for a second opinion.

I have the exact same problem on my iPhone X. I changes the back glass with the heating gun. I remove the hole internals for that, including all flexcables. Now my iPhone has also service drops. It is stable 5 minutes an then it says no service for 30sec. Then it reconnects. Is there any solution for this problem ?

greatings from Germany.