A strange “bug” in iOS can block the wifi modem of an iPhone

WIFI zone

A “sea of ​​fool” error has just been discovered in iOS which can block the wifi modem of an iPhone and leave it without said wireless connection if the device is not reset again.

And I say that it is a very simple error because it simply occurs when an iPhone tries to connect to a Wi-Fi network whose SSID name begins with the percent symbol (%). Hopefully Apple fixes it in an upcoming update.

If you don’t like the SSID that comes from the factory in your home Wi-Fi router, you know perfectly well that you can change it to your liking. Well, for now, do not think about changing the label to a name that begins with the symbol of So much percent, such as “% wifi_de_casa%”.

Because most likely, if you do, when your iPhone tries to connect to that network, it will lock the modem internal wifi, and stay offline. If your mobile is Android, then rest assured that this will not happen to you. So it is pure iOS problem.

This “bug” was discovered by the security researcher Carl Shou, that after joining a Wi-Fi network with the name «% p% s% s% s% s% n», the Wi-Fi connection of your iPhone was disabled.

It appears that the error could be related to the initial use in the network name of the percent sign, which leads to an input parsing problem whereby iOS misinterprets the letters following the “%” as a string format specifier.

In C-type programming languages, string format specifiers have special meaning and are parsed by the language compiler as a variable name or command instead of standard text.

If you are affected by the error, you have no choice but reset network of the device to have your Wi-Fi connection operational again. You will have to go to Settings, touch General, and then Reset. Tap on “Reset Network Settings” and confirm the request at the command prompt.



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