My iPhone won't connect to a Wi-Fi network?

I know that it isn't a problem with the router, because my laptop and both of my parents iphones are connected to our home network but my phone can't seem to find it. I have reset my network settings, updated everything, taken my phone on and off airplane mode and turned my Wi-Fi on and off multiple times as well as restarted it many times. What is wrong with it? Last night it found and connected to the network for about 10 minutes but after locking my phone and going back to it I found that it had disconnected again.

Firstly, you can check if you put the right password.secondly, you can check if there something wrong with your phone hardware, especially the one used for receive the signal. You can go to the repairing store and ask some professional people who are good at this.

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