Iphone Wi-Fi keeps disconnecting

Hey there…
yesterday i just synced my apps and then all of a sudden…

my iphone 4s Wi-Fi keeps disconnecting and reconnecting… It does it every 10 sec, it disconnects Wi-Fi, then finds my Wi-Fi and connects…

it was fine before but this is a pain… Changing the channel of Wi-Fi isn't the problem because all my other devices are fine, just my iphone giving me prob.

any solution to help my iPhone.

Do you have a Wi-Fi box? If you do I would try to keep it by me

Backup(only files, contacts, messages. Not applications and its settings). Restore factory settings. And restore data.

its hard to find out exact reason to find a fix.

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