Airtime charge (VAT included): 

Daily subscription :  VND 1,300

Interval of a call is 6 seconds +1 seconds.

Airtime charge In VND Airtime charge call to MobiFone Subscriber VND 1100/ minute Airtime charge (first 6 second block) VND 110/ 6 seconds Airtime charge (next 1 second block) VND 18.33/ 1 second Airtime charge call to other networks in Vietnam VND 1200/ minute Airtime charge (first 6 second block) VND 120/ 6 seconds Airtime charge (next 1 second block) VND 20 / 1 seconds IDD* charge IDD charge SMS to Mobifone Subscriber Peak:VND 290/message Off peak: VND 100/message. Off peak: 1:00 - 5:00 all of days SMS to Other Networks  in Vietnam Peak:VND 350/message Off peak: VND 250/message. Off peak: 1:00 - 5:00 all of days International SMS USD 0,165/message Charges via VSAT  (1'+1') VND 1,200/minute Call charge to 1080/1088/information box Intra Zone Time + 108x service charge