Just got to Hong Kong and was using my iphone 6s. Turned off airplane mode and got an SMS from Verizon about call/data/SMS charges. Turned off my cellular data/sms/voice and somewhere in the 10 minutes the phone locked up and required activation. Don't know why this is, as VZN phones are supposed to be unlocked. So hopped onto Wifi and tried activating but it says SIM NOT VALID. What's going on here? I don't even know my Verizon password to call back home and try and fix this (on a family account). I took the SIM out and it works OK, but I'm guessing now when I get to Thailand I won't be able to get a local sim card working there. Grr....what a major annoyance. I don't have a tool to get the SIM in and out (borrowed from someone) so no way to troubleshoot this. Can anyone help?!!?