Hi guys, My iPhone 4 was working fine until after a 3 foot drop onto concrete. Still works fine, but I noticed that the signal strength is not the same. Instead of the usual 4-5 outside I'm getting 2. Instead of 2-3 indoors, I'm getting 0-1. Called Apple, they recommended trying to get the sim swapped out (after trying to clean it/reinsert it and restore network settings). Anyone else have this happen to them? Any success with the sim card swap?