How to fix my Wi-Fi? My Wi-Fi randomly stops working on my iphone despite showing that it's connected?

I'm connected to my Wi-Fi on my laptop and it works just fine. On my iphone 5s it says that I'm connected to the Wi-Fi and that I have a good signal, however I can't use the internet, send imessages, or stream netflix without turning my data on. When I connect to Wi-Fi elsewhere it works on my phone, and my Wi-Fi sometimes works on my phone, but then stops suddenly and doesn't work for weeks until it suddenly works again for a while. What's wrong and how do I fix it?

I had the same problem with my iPhone 4S. I would just disconnect my iPhone from the Wi-Fi then reconnect and it would work just fine for a bit. I recently switched internet providers and now it works just fine. I suggest asking your internet provider about your problem.

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