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Hi,

I am planing to create a program that will do folowings

  1. check validity of SIM card
  2. Check current balance in the SIM card
  3. Recharge SIM card using some top up cards.

SIM card can be in mobile phone(Say it Nokia), May be in a Modem(Siemens and Wavecomm)

Please suggest some options, How can i do that.

Regards,

Vijay Shanker