I had a similar problem with my iPhone 11 Pro. I dropped it from the top of a ladder, but it still worked fine and no visible damage on the outside (had a good case on it). Progressively over a few weeks the cell service got worse and worse with dropouts and restarts and no about of resets, software updates and a full restore made it work.
Took it to a repair shop and turned out the drop had apparently damaged the connection between the antenna board and mainboard. Was quoted $150 to fix, but had already preordered the 15 by that stage.
Worth getting it checked out by a local repair place, could be a simple/cheap fix.
I had a similar problem with my iPhone 11 Pro. I dropped it from the top of a ladder, but it still worked fine and no visible damage on the outside (had a good case on it). Progressively over a few weeks the cell service got worse and worse with dropouts and restarts and no about of resets, software updates and a full restore made it work.
Took it to a repair shop and turned out the drop had apparently damaged the connection between the antenna board and mainboard. Was quoted $150 to fix, but had already preordered the 15 by that stage.
Worth getting it checked out by a local repair place, could be a simple/cheap fix.