O2 Tandem

Advantages of the O2 Tandem service

• Up to 50 percent cheaper rates on mutual calls and SMS
  Your discount depends on the tariff associated with the primary SIM card .


• Up to four SIM cards attached to one account
  For the price of one activation you can get up to four SIM cards - that means four different phone numbers with discounted calls and SMS between them.


• Option to create up to two O2 Tandem groups
  One legal entity with multiple contracts may activate up to two primary O2 Tandem SIM cards - that means two groups of four phone numbers (a total of eight different phone numbers), with each of the two groups controlled by a different manager or team leader. One IČO may register up to two O2 Tandem groups.


• Set limits for prepaid SIM cards
  As owner of the primary SIM card , you can set different limits for each of your secondary cards governing voice services (minutes) and SMS (number of messages).


• Include all O2 Tandem SIM cards in O2 Benefit
  O2 Tandem SIM cards may enjoy the many advantages of O2 Benefit, as they increase O2 Benefit points for the primary card.


• Retain phone numbers when transferring from prepaid services to O2 Tandem
  Users of prepaid services who request a transfer to an O2 Tandem group can keep their current phone number. (Note: Once transferred into an O2 Tandem group, a prepaid phone number may no longer be transferred back to prepaid services.)