My wife is having an issue on her S3. She has had the sms app freeze every day or two. The stock sms app would flash to the "no messages" screen the way it would look if you had just opened it for the first time and she wouldn't be able to send or receive messages. Restarting the phone solves the issue temporarily until it happens again. Factory reset lasts a couple days. She is on the Telus network in Ontario Canada and we have exchanged the phone for a new one as well as exchanged the sim card and still the issue persists. This is my wife's first Android, she came from a blackberry and so far she is pretty disappointed because of this issue. I don't know what else but the network could be the problem. Have tried disabling stock sms app and using others and still no results. I have searched alot and came up empty handed, appears very few are having similar issues. Any help would be greatly appreciated. Thanks