I just updated from iOS 7.0.4 to 7.0.6 and now my carrier signal is UNSTABLE. It will have a complete signal with 3G, and then after a few seconds the 3G signal will be lost and then the carrier symbol will be lost, and then the signal bar will decrease from 5 bars to no signal at all and then just repeat the cycle. I can receive messages but only when the signal is complete. I'm very frustrated coz i also use mg 3G connection as my internet through tethering but since the signal is unstable, i can't use it. 
Also, i am unable to sync in iTunes. I have the latest version of iTunes.
Already tried to reboot my iPhone, restart iTunes, restart my Mac, tried different USB ports, tried different cables but still i can't sync. -_-
Error message:
The iPhone cannot be synced. An unknown error occurred (-50).
Are the unstable signal and unable to sync really because of iOS 7.0.6? Does anybody experience the same thing? My iPhone is really useless because of this. I shouldn't have update to iOS 7.0.6. Why will Apple release a very buggy update. -_-
Also, i am unable to sync in iTunes. I have the latest version of iTunes.
Already tried to reboot my iPhone, restart iTunes, restart my Mac, tried different USB ports, tried different cables but still i can't sync. -_-
Error message:
The iPhone cannot be synced. An unknown error occurred (-50).
Are the unstable signal and unable to sync really because of iOS 7.0.6? Does anybody experience the same thing? My iPhone is really useless because of this. I shouldn't have update to iOS 7.0.6. Why will Apple release a very buggy update. -_-