為提升賬戶安全，只接受於相同裝置內之電話號碼作登記。如欲啟動「csl 賬單付款服務」支付 App Store, Apple Music, iTunes 及 iCloud 的購買項目，請將SIM卡插入相同裝置，並選擇「使用此手提電話號碼」以完成登記。 （如果裝置插入多於一張SIM卡，請移除或關閉其他SIM卡。）如有查詢，請致電：******。了解更多：https://www.hkcsl.com/zh_HK/apple-direct-carrier-billing-setup 。

To enhance account security, only mobile numbers on the same device are accepted for registration. To activate the “csl Direct Carrier Billing Service” for App Store, Apple Music, iTunes and iCloud purchases, please insert the SIM card into the same device and select "Use This Mobile Number" to complete the registration. (If multiple SIM cards are inserted, please remove or turn off the other one.) For any inquiries, please call: ******. Learn more: https://www.hkcsl.com/apple-direct-carrier-billing-setup .