Iphone 4S service issues (losing service, not sending texts, slow data on 4G)?

I have iOS 6.1.1, the exclusive update for 4S owners only that promised bug fixes that limited and damaged cellular performance, but my phone still is not running properly. I always have service problems and in areas with great coverage for everyone else my phone seems to find a bar or two at most. My old phone never had such problems and my iphone used to function well the first month or two i had it (owned since November of 2012). I resetted network setting, restarted my phone, all that but to no avail! I need to get this fixed! Any help?

So I suggest that you can recover your iphone by itunes.
First, download the iREB-r6 to help your iphone enter into the DFU model.
Second, open your itunes. Push the 'shift' to choose the IOS 6.1.1to recover your iphone.
Finally, use the evasi0n to jailbreak your iphone.
Hope it can help you.

_I would like to TravleChina.HK

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