iPhone 5 wifi problems

I've had my iPhone 5 for about 4 months now and haven't had any problems until now. My wifi doesn't stay connected. It connects then disconnects and i have to go back into my wifi settings several times to be able to get it to connect. I know it's not my wifi because it's fine on my laptop as well as my husband's, mother in law's and father in law's (who also has an iphone 5 btw) phones. Any suggestions?