How do I fix the Wifi on my Samsung Moment?

For some reason, whenever I try to scan for networks, I get the words "unable to scan for networks." When I try to stop it it says "unable to stop wifi" It has happened to me 3 days in a row now after never happening. My router is working fine. I'm guessing it's another "bug" that randomly pops up but it gets super annoying. Anyone else have this problem or know a fix?

i have also come across this kind of problem,but if reset it, it works. alawys like that

You may also have to bring it into the shop if the above doesn't work...

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