How to fix my iPhone 3G after updating my iPhone?

I updated my iPhone 4S today and ever since I've updated my phone my 3G isn't working. Can someone tell me how to fix this please?!

First go back to the store and put apple in a basket along with other fruits, apple suxs, throw in trash. Go with nokia, samsung, stay away from crackberry too.

  • Will updating my iPhone apps affect my phone speed as how updating the Operating System (OS) will? Currently I'm using the iPhone 5s on iOS 8.3 I know if I were to update my phone to the latest OS I may notice some slowdown on my phone's performance, since it may not have the "muscle" to handle certain functions. Many apps now are optimised for iOS 9 and/or the 6th generation phones. Will my 5s' speed performance slow down if I update my apps? Will the app's performance slow down?
  • Why is my iPhone acting weird after updating it? When I'm using 3G and I search for something on google or try to open a link from my Facebook app, I get a message that says "Response Error. Technical description: 502 Bad Gateway - Response Error, a bad response was received from another proxy server or the destination origin server." What the hell does that mean?
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