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How to buy SMS Credits ?

Enable Free Messaging

  1. Open Calculator Pro+.
  2. Go to settings
  3. Click on “Enable Free Messaging
  4. Enter your phone number & verify it.

Buy SMS Credits

  1. Open Calculator Pro+.
  2. Click on top-left corner and open the sliding menu as the display in below screenshot.
  3. Click on “Payment” option.

  1. Click on “TOP-UP BALANCE” and complete payment procedure.