Be careful of links in Twitter and other social media sites that may not appear what they seem.
People are being sent to a site that will crash Safari and Chrome on your iPhone and Android phone – the sites are CrashSafari and CrashChrome but you will not know you have been sent there as the urls have been shortened.
Safari and Chrome will not work afterwards and you will have to reboot your phone
More information can be found here:Don’t Tap That Link! This Website Will Crash Your Phone