Sometimes the internet on my Iphone doesn't work?

Sometimes even when I have it connected to Wi-Fi my internet doesn't work it doesn't load or I get an error screen saying safari taking to long to load or something and then I have to turn my phone off and turn it on again and it works fine

It could be working fine and suddenly it stops working I hate this it pisses me off
Iphone 4s
Sprint

Your phone may just need to be reset. By turning your phone off and back on it resets your phone. A phone is just like a computer. You have to turn it off and back on to reset it so that it works properly.

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