Wi-Fi isn't working on my iPhone 4s?

Yesterday, I picked my phone up from being repared (the on and off button wasn't working). I came home and the Wi-Fi on my phone wasn't working in my room (perfectly fine in the living room).It never had this problem. I tested it out with my ipod and my dads iphone and both seemed to get the signal just fine except for mine. Please help. I'm so frustrated with my Wi-Fi having to stop working and being so weak on my phone

Well, if you got it repaired from an Apple Service Center or whatever, it may not be a problem. I see that you have tried it on other phones, and it is working in your living room. Either the Wi-Fi is week, or your iPhone had some settings changed.

Try this- Tell everybody to turn off their Wi-Fi on their phones and then try to connect. Maybe there's too much load on the Wi-Fi.
If it does not work and you do not find a solution and take it to the Service centre.

Hope this Helped you.

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