Самое важное изменение, которое вы могли бы сделать, это сократить список привилегий раза в три-четыре. Неважно, какое у вас красивое приложение если я не могу им пользоваться, ограничив в правах, которые ему не нужны.
Это список из Google Play:
This app has access to:
Device & app history
- retrieve running apps
- read sensitive log data
Storage
- read the contents of your USB storage
- modify or delete the contents of your USB storage
Camera
- take pictures and videos
Location
- approximate location (network-based)
- precise location (GPS and network-based)
- access extra location provider commands
Device ID & call information
- read phone status and identity
Phone
- directly call phone numbers
- read phone status and identity
Microphone
- record audio
Photos/Media/Files
- read the contents of your USB storage
- modify or delete the contents of your USB storage
Identity
- find accounts on the device
Contacts
- read your contacts
- find accounts on the device
Wi-Fi connection information
- view Wi-Fi connections
Other
- receive data from Internet
- view network connections
- change network connectivity
- run at startup
- modify system settings
- control vibration
- full network access
- close other apps
- change your audio settings
- connect and disconnect from Wi-Fi
- control Near Field Communication
- pair with Bluetooth devices
- prevent device from sleeping