Why won't my iphone 4s connect to Wi-Fi? - 2

For the past few weeks, i can't connect to my Wi-Fi or friends Wi-Fi.

I've tried resetting the phone, I've also tried resetting the network settings too and this still doesn't help. I've tried everything that I've looked up on and nothing seems to help.

Also i can't use my 3G to do anything in a house where i was connected to Wi-Fi, or send texts.

At home i try and send texts and it doesn't work, then i try and use my 3G for apps but that doesn't work either, only when i'm outside the house.

I really need help! Any suggestions will be very much appreciated.

Ensure that you are trying to connect right Wi-Fi network enter right password. Password is case sensitive.

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