@thenglengchan,
Does your Galaxy Ace II x died or you have no voice, no mms and no data?
Did you try to reboot your phone?
Give us more details on what is not working.
You may have tens of causes, can U explain what's worng please?, is it coming from network issue or device issue, or what?.
What exactly isn't working? Did your phone die? Are you getting no signal?
