Internet on my Iphone 4 so Slow?

Okay so I've noticed this has started like three weeks ago my internet being really slow, even downloading apps takes a really long time and sometimes i have to download them again because it fails. Loading videos especially is a problem. Youtube hardly works. I called mobile and they said its a upgrade thing bit i upgraded and restored to factory settings, rebooted even but still the same thing. I live near 3 cellular signal things so they said it should be perfect bit I've noticed at night it works almost perfect with no buffering. This is like 11pm onwards?

You try use Wi-Fi then check resuly

Do you have a laptop-CPU? Does the same thing happen on them? If the same thing is happening then your internet is slow. Download speed test From the App Store. It is provided by Ookla. Check your speed during the morning and then during night. Make sure you are checking it in KBPS not MbPS as KBPS is more accurate.

May be signlas are down so your internet is slow, I think you should not worry about, you should wait and try after sometimes, If you still facing the problem then you should contact to your service provider.
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