New text message can permanently disable the Messages app on most Apple iPhone models
In the past,we've told you about malicious text messages that can cause your iPhone to freeze. Last month, we warned you about a certain 3-second video from VK.com (which could be hidden under a goo.gl or bit.ly URL shortener) that will at first slow down your iPhone, and then freeze it. A hard reset is the cure.
Hard resets won't solve the problem and neither will turning the phone off and on several times. Obviously, this is a serious matter. If you receive a large contacts file via the Messages app, do not tap on the file. And we seriously suggest that you do not try to entice your friends or family to open it, either.
While Apple will most likely send out a fix OTA to remove this threat, be cautious about the messages you receive.
Things that are NOT allowed: