A:AnswerYes. Any cellular device that is unlocked is free to be used anywhere and with any company. It’s also WiFi enabled so could still be used even with out cell service attached.
A:Answer8 is the newest and you have to have another phone cell number which costs more each month in addition to your phone if you want to leave your phone behind.
A:AnswerThe watch will track your sleep, stages of sleep and provide average weekly sleep data. It tracks breathing and heart rates and has an entry for wrist temperature but I haven’t figured out how to activate that function.