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Some Vietnamese network operators, primarily Mobifone, occasionally block BTM SMS. If you are unable to receive the verification SMS within a couple of minutes, you have a number of alternatives:

  1. Use another non-Mobifone SIM card. This can be a Vietnamese number or an overseas number
  2. Use a virtual SMS number, for example on https://receive-smss.com/
  3. Contact the number shown on the BTM. We will use our company’s SIM card in order to provide the verification code to you