today,my 9800 display the X SOS symbol in the top right hand side of the screen,9800 was synchronizing with PC at that time.when i reboot 9800,the ISP name appear in the screen,the phone placed the desk all the while.
do you meet the issue?
so the issue is the sim isn't working anymore? get your carrier to do a sim swap. if thats not what you're referring to, i have no idea what it is.... you could do a master reset or go back to an older backup?