Why does my iphone say I don't have wi-fi when I do

I use my moms phone and its gets perfect internet so I grab my phone and place it right beside hers and it says 3G why does this happen? It's been going on for awhile I don't know why but everyone else seems to have it at times (it comes and goes) but I never have it.

From what you've said there's only two things I can think of

1. Your Wi-Fi isn't on. Go to settings/Wi-Fi and turn it on and press your network to connect.

2. If it never shows up are you sure the Wi-Fi is broadcasting its SSID (Name and signal). If everyone else that has Wi-Fi had to put in the name and password themselves then so will you. It has to be EXACT.

Other than that I can't think of any reason besides your iPhone just being faulty. Can you get Wi-Fi anywhere else?

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