STEP 1 Click 'Use Credit' or 'Top Up Ticket' to purchase your STEAM code.
STEP 2 Key in your mobile number and hit 'Submit'.
STEP 3 You will receive 2 SMSes:
i) 6-digit TAC
ii) Confirmation of purchase
STEP 4 Reply to the confirmation SMS with your 6-digit TAC.
Your STEAM code will be sent to you via SMS.