After I upgraded to IOS 7 and later 7.03 my iPhone sometimes has trouble connecting to wireless networks. Some days it will and some days it wont, even after trying the network reset option. However, my wife has the same phone and has had no trouble after the upgrade. I haven't done anything different than she has.
Being able to connect to Wireless Networks is definitely an important function and I'm regretful to learn your iPhone 5 is having difficulties doing so! Let's make sure we try all options to get you connected. I appreciate you trying the Network Reset option first. Please ensure your information is backed up and complete a hard reset on your phone: http://vz.to/1cfZDog
Restore your information and test the wireless connections again. Please keep me posted on your results!
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