Sign up for a HK$388/ HK$428/ HK$518/ HK$638 SuperCare Smartphone plan, additional service(s) with a total monthly fee of not less than HK$36, and an admin fee of HK$18/month. A 24 to 26-month of contract is required, vary depending upon the handset models, premiums and the twin set of smartphones that the customer selects. The smartphone prepayment under this offer are as HK$2,080-HK$6,280 , which will be credited to customers over the contract period. Customers can enjoy HK$0 cash prepayment and 0% interest instalment by paying with one of the selected credit cards of HSBC, Hang Seng, SCB, Manhattan, Citibank, BOC, Dah Sing, MEVAS, DBS, BEA, Fubon Bank, Bank of Communications, Wing Hang Bank, Wing Lung Bank, Shanghai Commercial Bank, China Construction Bank or AEON. The cost will be withheld from the customer's credit card limit, and this will be released in line with the monthly handset repayment charged to customer's credit card over the life of the contract. This charge will be credited to the customer's mobile service monthly bill over the course of the contract.