How to use the China Unicom function?

Instructions for China Unicom SIM Cards Top-Up:

1) Tap the "Pay" icon and select "Pay Bills"
2) Select "SIM Top-Up"
3) Choose "China Unicom (Hong Kong)"
4) Enter the top-up mobile number and select the top-up value
5) Click on the check box if you agree to the Terms and Conditions
6) Check if your transaction details are correct and press the green tick at bottom right to continue
7) Enter your Transaction PIN or use Touch ID to confirm

Once the top up is completed, your credited mobile number will receive a confirmation SMS. Should you have further enquiries, please contact the network operator at +852 2122-1188.