How to jam cell phone spam message?
As far as I know, we're getting a lot of spam on our smartphones every day. Maybe somebody is trying to perform an analogue of DdoS attack to permanently block your phone. You should check if you can make a call when the SMS spam is at the highest rate. If there are lot's of numbers that send you those messages then a simple blacklist blocking won't really work. At this point, you may need some special means to stop the spam. Like GSM cell phone jammer.