techwiki:android [ShiningWiki]

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====== Useful App for Android ======

  * PC mirror screen for android:
    * scrcpy.exe: https://github.com/Genymobile/scrcpy
      * setup on androidL
        - enable developer option > USB debugging (not developer setting) 
        - if developer option not visible, go Settings > About phone > Software Info - tap build number 7 times
        - then, Developer option should be visible now, then enable USB debugging


====== Problem and Fix ======

**Stop Phone make screenshot, take photo, call emergency in your pocket**
  * Setting > search "Motions and Gestures" > turn off Double tap to turn on screen, and turn off Double tap to turn off screen
  * Setting > search "Smart Lock" > On body dectection > turn it off
  * ref: https://www.samsung.com/sg/support/mobile-devices/how-to-prevent-pocket-dialing-on-samsung-mobile-device/

====== Customize ======

===== App Customize =====

**Disable Chrome android suggested site and suggest article**
  - go to this hidden setting page for Chrome <code>chrome://flags</code>
  - search ntp, and change "enable-ntp-popular-sites" and "enable-ntp-remote-suggestions" to disable

**Disable channel in wechat**
  * go to wechat setting > General > Manage Discover > switch off Channel, (Mini Programs, Top Story)


====== Backup, Reset to Factory, Restore ======

  - Backup: 
    - install "Easy back and restore" app: 
  - Copy the back to a SD card, or OTG USB drive, or online storage
  - Reset to Factory
  - Restore
    - install "Easy back and restore" app, and load the backup data

  * apk extractor:
    * https://play.google.com/store/apps/details?id=com.iraavanan.apkextractor&hl=en
====== Backup Steps Manually ======

  - Note down the list of App you installed, and each app login information
  - Backup internal storage folders, go through one by one.
  - check each app that stores data separately, and dig out to external storage
  - take out SD card and restore to factory

====== File Path of App File ======

  * QQ <code>\Android\data\com.tencent.mobileqq\Tencent\QQfile_recv</code>