IOS 6.1.3 Doesn't Hold Charge and Wi-Fi doesn't work. Need Help!

I just downloaded the IOS 6.1.3 to my iphone 4s and now my battery doesnt hold its charge and my wi-fi Button doesn't work at all. It is just grey and wont turn on. I tried restoring my phone to the last back up before and it still didn't solve the problem. Can someone help me please