Answer to: Weak Signal after replace LCD Displaytry a restore ! even if is the hardest way it works every time
Answer to: iPhone 4 Contact Clip what for?hello ! sometimes when you disconnect the battery is necesary to restore your iphone.if not, your gsm signal is weak,phone app has 1st hardware error aka you can call but nobody answer and you cannot close the call even if you press the home/lock button and the list may continue.that clip is seems has a important purpose in gsm signal because thru it, the back cover which works like a antena gives you more signal. i hope it was helpful !