Yes, follow the airtime or data option when calling *134*20039# and then choose “Other Number”. This will enable you to buy airtime or data for any South African mobile number across MTN, Vodacom, Cell C or Telkom Mobile network. When buying airtime or data for a South African mobile number remember to replace the first 0 with a 27. For example, number 0821230987 should be entered as 27821230987