Can anyone help? My wife has a Samsung GT18190N (Galaxy s3 mini) ans the email sig default is "sent from my Samsung Mobile" I changed this some months ago to refelect her work email and it changed OK but has now defaulted again and won't change. I key in all the info, click done but it overides everything I have put in to go back to default signature. Checked for latest software and all up to date. Any help would be appreciated. Thanks. Peter.