You can top up credit on STC by using Thai Bank Transfer, Visa, Mastercard, JCB, Alipay, Cryptocurrency or your Coins.ph wallet. Easily bookmark your payments here: mobiletopup.com/topup/saudiarabia Reload any pre-paid phone on the STC in and cheap, fast and secure way. To know your STC Mobile Number: Dial *150# To check your account balance: Dial *166#