Why internet connection not working?

Ok so if my Wi-Fi is working on my laptop and my xbox live, why isn't it working on my iphone 5. Well it works, but internet is slow. But when I restart my iphone, it works for only like 5 minutes then its slow again. This mostly happens in my facebook and instagram. Now, there's no network connection mentioned in my instagram when I was logging in. Username and password is correct but there's no connection. I don't understand.

Probably too much demand for data and not enough bandwidth, hence your iphone doesn't connect or it's unreliable.

Might need to upgrade your broadband.

Where are you trying to use your iphone? Is your wife's laptop and your X-Box near the router? F it is a distance away from the router, the router signal might be weakened. Try it near the router. If it's OK there, the router power needs to be increased.

Is your router fairly old? It may be having trouble coping with the workload…

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