Mobicard

Does anyone know what TKC means in English also KM2 and KM3. eg When I check my balance on my phone it gives me a SMS - - - - - -  MobiCard TKC 300000d, KM2 100000d, KM3 100000 and then the expiring date.

Dear,
TKC: Is your main account. you can use it to call for anyone using the same kind of your sim(mobi), and different kinds of yours ( like viettel, ...).
TKKM 2, 3: is your promotion account, When you paid your mobile phone in promotion day of mobile ( plus 50% in here). but you just use this account to call for other Mobi Sim,

Dear,
TKC: Is your main account. you can use it to call for anyone using the same kind of your sim(mobi), and different kinds of yours ( like viettel, ...).
TKKM 2, 3: is your promotion account, When you paid your mobile phone in promotion day of mobile ( plus 50% in here). but you just use this account to call for other Mobi Sim,

Thank you for your very promt reply Miss Thao.
It's a little clearer to me now.