Android

Howto

• Building your first app
• Remove PIN code on Android

Backup

• http://androidflip.com/how-to-backup-your-android-phone-before-upgrading-firmware/

Install ssl client certificate

• https://help.hcl-software.com/connectionsmobile/admin/overview/t_configure_2fa_certificates_Android.html

Check out https://android.stackexchange.com/questions/252812/how-to-get-chrome-or-any-browser-to-present-a-tls-client-certificate/252927#252927

Recovery mode

Hold volume down and powerbutton

Locking/unlocking

• Locking/Unlocking the Bootloader

Check if locked or unlocked

fastboot getvar unlocked

will probably give you

< waiting for any device >

so boot into #Recovery mode and try again

Tools

adb

android-sdk-linux/platform-tools/adb

Better Battery Stats

get from xda

FAQ

Change sounds of notifications for apps

Settings->Apps & notifications->App info->App notifications