Apple Alert: This hotspot name may disable Wi-Fi on your iPhone

    There is a peculiar name for hotspot (internet hotspot) which can disable and make unusable the Wi-Fi function on the Apple iPhone. According to the testimony of an investigator, corroborated by several sources, this is a new bug in the iOS system.

    At issue is the connection to a Wi-Fi network or hotspot that contains the “%” symbols. The only known solution, after the iPhone automatically turns Wi-Fi off, is to reset all network settings on the affected mobile device.

    There's a new bug in iOS that turns off Wi-Fi on the iPhone

    For all Apple iPhone users who don't want to seriously affect the operation of the Wi-Fi option, then we advise you to pay attention to the name of the Wi-Fi network in question before joining it. The same goes for hotspot access points.

    The discovery was made by a security investigator who reportedly detected the bug of the iOS in question. The error is capable of persistently disabling the Wi-Fi functionality that allows Internet access. The error in question prevents its normal use.

    After joining my personal WiFi with the SSID “%p%s%s%s%s%n”, my iPhone permanently disabled it’s WiFi functionality. Neither rebooting nor changing SSID fixes it :~)

    — Carl Schou (@vm_call) June 18, 2021

    Above you can see the status of your Apple iPhone XS with iOS 14.4.2 operating system after connecting to the home Wi-Fi network that you nicknamed “%p%s%s%s%s%n.”. This is the fateful SSID of the Wi-Fi network of Carl Schou, the researcher in question.

    These results were successfully replicated by the publications BleepingComputeras well as by other investigators. Everyone would come to the same conclusion, with their Apple iPhone refusing to activate the Wi-Fi function.

    Interestingly, the same scenario has not been replicated on Android devices.

    Turning the iPhone off and on doesn't solve this bug do iOS

    As Schou points out, restarting the smartphone is not enough to solve the problem. Not changing the SSID either, the name of the Wi-Fi network solves anything. Likewise, it is not possible to connect to another Wi-Fi network in front of the bug demonstrated.

    But, after all, what causes this bug on iOS? Apparently, it will be a problem in the form of a string. According to various sources, the iOS system interprets the letters following the “%” as commands or variables and not as a Wi-Fi network name per se.

    There is a simple fix for this issue on iOS

    The user must access DefinitionsGeneralReplacementReset Network Settings.

    This methodology will reset all network settings. Then, the user must re-enter the data of the Wi-Fi networks he wants to connect to and, of course, not use problematic names like the one exposed here.

    We are facing a bug annoying iOS that, while not creating a security hole per se, will be a source of frustration. Hopefully, Apple can fix it with a future system update.

    Until then, do not access or adopt suspicious and strange names for the respective Wi-Fi networks.

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