Originally posted by lobbyhax
my iphone 4 has poor signal for some reason. always 1 bar, tried everything , even factory restore etc.
Took my sim card out put into brothers phone.. 3 bars.
why is this?
The old version of the iPhone 4 have that problem maybe that's the problem and if the iPhone is from AT&T it will have that because I have see like 2 iPhone 4s updated version in AT&T.