Problems

* No Network in iPhone 5.
* Low Signals.
* iPhone 5 only searching for network.
* Signal dropping in iPhone 5.

Workaround

* Restart your phone and check.
* Remove and re-insert SIM.
* Toggle between ON and OFF of Airplane Mode.
* For “Only Searching for Network”, Go into:
Settings.
General.
Reset.
Reset Network Settings.
Confirm.
* Check with any working SIM card and check.
* Update your iOS.

Hardware







Re-solder antenna’s on-board connector (Re-solder two antenna’s points) and antenna wire. Soldering points are mentioned in Picture above.




Check continuity of capacitor “C1” with Antenna (Capacitor is at the opposite side of Antenna). If there is no continuity then place jumper, if it still fails
then change capacitor C1.

Now Check Capacitor “C2” and Coil. If any of them is faulty, replace.

Reheat Power Amplifier IC and Check, if it is faulty then replace it.

make sure that you check for your Network problem after performing every step.