Strange network names can disable Wi-Fi on iPhone — stay clear of a specific symbol

A security researcher discovered a network name is breaking Wi-Fi functionality on iPhone and other iOS devices, and it appears to be due to a specific symbol triggering a bug in Apple’s smartphone.

As spotted by 9to5Mac, founder of reverse-engineering and software blog Carl Schou joined the network “%p%s%s%s%s%n” only to find it completely broke the Wi-Fi functionality on the iPhone. The researcher also found using “%secretclub%power” could trigger the same issue, meaning the percentage sign appears to be causing problems when iOS devices connect to networks. 

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Another user connecting to a Wi-Fi network with similar symbols also experienced the same issue. The name,“%Free %Coffee at %Starbucks,” appeared to have triggered the bug and automatically switched off Wi-Fi functionality. 

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