1) Packages are valid immediately after purchase on the app. The 1 day package exprires after 24h, the 30days package expires after 30*24h2) Data, voice and roaming pacakges are separate and independent. You do not require one service to enable the other. You can activate and use them concurrently3) After purchase, the app will show the purchased package in the Your Sim screen with valid until date. For now, you cannot check the data and call balance used/ remaining in the package4) The first usage of your data package will be on unlimited 4G speed (up to 21Mbps). Once you exhausted your 4G data allowance, you can use 3G speed (128kbps) until the end of the package validity. In exceptional cases of high continued data usage, we reserve the right to reduce data speed further5) Hong Kong voice package can be used for calls to standard fixed and mobile numbers in Hong Kong. Asia voice package allows calls to standard fixed and mobile numbers in the listed countries (see details under 'Calls' section)6) Hong Kong 1hour, 1day and 7days data pacakges, as well as roaming data packages do not include any voice minutes, but only data7) Roaming packages are for unlimited 4G data during the validity period, but the data speed will slow down to 3G in case of high usage