How to top up

IF Card offers you the 4 options for top up: NT$100, NT$300, NT$500, NT$1,000

Via FET Stores/FETnet/FET App, paying with credit card, bank account, CVS barcode.
Via Credit Card: Dial 777 from your mobile phone, and follow the voice instruction.
Via ATM: Transfer to Bank ID [812] + Account # [ 8668+ your mobile number ].
Via Convenience Stores, including 7-11, Family Mart, OK, Hi-Life: Purchase recharge cards at the checkout counter, then dial 777 and follow the voice instruction or use FET App to install the service.