This one word has the power to damage any iPhone and prevent it from connecting to the internet.

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This one word has the power to damage any iPhone and prevent it from connecting to the internet.

IF YOU WANT TO CHANGE THE NAME OF YOUR HOUSEWIRELESS NETWORK, THERE IS ONE WORD YOU MUST AVOID AT ALL COSTS.

If you have an iPhone, be cautious about the name you give your home Wi-Fi network. Because a security researcher revealed that a strange problem in iOS – the operating system that runs every iPhone model – can prevent the smartphone from connecting to Wi-Fi if the network has a specific name.

And when we say “totally disable,” we mean exactly what we say. Your iPhone will reboot if you use this name for your Wi-Fi network. The Wi-Fi toggle in the Settings menu will be flipped to “off” when it’s turned back on, and you won’t be able to turn it back on.

Not only will you be limited to mobile internet, but you’ll also lose access to a number of key iPhone functions, such as AirDrop and AirPlay, because your Wi-Fi will be blocked.

Carl Schou, a security researcher, was the first to notice the strange bug. The name of your Wi-Fi network that you are not allowed to use is:

My iPhone’s WiFi functionality was permanently disabled after joining my personal WiFi with the SSID “% p percent s percent s percent s percent s percent s percent s percent s percent s percent s percent s percent s percent s percent s percent s percent s percent s percent s percent s percent s percent s percent s percent Neither rebooting nor changing the SSID solves the problem:) pic.twitter.com/2eue90JFu3

Schuo has been tight-lipped about how he worked out the perplexing problem. The string, according to Apple-centric blog 9To5Mac, causes a memory corruption, which triggers an iOS safety routine that kills the entire process. Unfortunately, while this fixes the memory corruption, it also permanently disables Wi-Fi.

Unless you live with the type of prankster who thinks this is a good idea… It doesn’t appear likely that you’ll come across this very frequently. We’re confident Apple will come up with a solution, but in the meanwhile, avoid any Wi-Fi networks that have percent marks in their names.

Don’t worry if you’ve already made the mistake; the issue doesn’t appear to permanently harm your iPhone. It is feasible to restore Wi-Fi on your phone, but you will need to reset all of your network settings, which will require you to re-join all of your Wi-Fi networks (and remember those ever-important passwords), as well as modifications to your cellular and VPN access settings. Go to to get started.

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