PackeSave

This is an application to reduce the amount of communication for a smartphone/tablet. It works by limit the application(s) to communicate in the certain condition such as screen is off.With this app, you can do the following.1) You can explicitly-define the application(s) which can use cellular communication when the screen is off. This will reduce the amount of communication, and enhance the security.2) You can also limit the application(s) to communicate while screen ON or through Wi-Fi connection. 3) You can completely shut off the cellular communication at certain time of the day, such as at midnight.note 1: Currently, this app is free beta version.There is no functional limitations and no time limit on the current version.But, in a future version, we plan to charge for this app (approximately $3).note 2: This app is available in the android 4.0 or later systems.note 3: In the Wi-Fi only model (which means android devices disabled a cellular communication function), you can not use all functions.I will recommend to use this app for a smartphone/tablet that have a cellular communication function.Especially confirmed- android 5.0- VoIP app