Samsung S8+
I am now in Malaysia the phone stated there it is not from Verizon Wireless but I can use the 4G for my service provider in Malaysia but what seem to be the problem with it? And also sometimes it turns off my 4G automatically like it's unable to detect the 4G I need to put it on airplane mode and turn airplane mode off then it comes back or restarting my phone helps. And also I can't do System Updates, it says it have problem authenticating the phone. Need help. And how to make sure my phone is unlocked to all coverage providers? I don't want problems when I travel.