Can not reply or send sms?

[hoan nguyen1]

I'm a newbie with gear s2. So, I have gear s2 sport R730 without esim cause I'm in Vietnam. I use it with iphone. And on gear I receive all notifications but just 2 action clear or block, not like action for facebook. So I also can not reply sms or send sms, it alert service not available during I can call phone from gear. Help me please