New iPhone 5s won't connect to Wi-Fi?

Me and my sister got iPhone 5s' today. Mine connected to the Wi-Fi no problem, but hers won't connect. We have tried many times and it still won't work. What can we do to fix this? The Wi-Fi has a password on it, if that helps to answer the question. We have made sure that we're typing in the correct password.

Yep

it may be something simple in settings but I keep reading about Wi-Fi iphone problems

have a look here

or any actual tech website

https://discussions.apple.com/...index.jspa

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