# Android

# TWRP - Team Win Recovery Project
- is custom recovery image. it facilitates users to install
  third-party firmware and back up the current system.

# usb debug
sudo apt install android-tools-adb
adb devices -l
- add user to plugdev group
- /etc/udev/rules.d/40-piksi.rules
`SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4ee7", MODE="0600", OWNER="yourusername"`
sudo udevadm control --reload-rules

# on macos
ANDROID_HOME=~/Library/Android/sdk
PATH=${PATH}:$ANDROID_HOME/tools:$ANDROID_HOME/platform-tools
adb devices -l
cd /data/local
mkdir workspace
cd workspace

# compiledSdkVersion 22
# buildToolsVersion ’26.1.1’

# set default usb mode
settings > system > developer options > usb mode

settings > connected devices 
# to start adbd server on phone
su
setprop service.adb.tcp.port 5555
stop adbd
start adbd

- list devices connected to pc `adb devices`
- if no permissions then
  ```/etc/udev/rules.d/51-android.rules
  SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4ee7",\
  MODE="0666", GROUP="plugdev"
  ```
  - add user to `plugdev` group
  - `sudo udevadm control --reload-rules`
  - reconnect the device
  
# Open interactive shell
adb connect 192.168.1.105
adb shell
# copy files from phone to pc
adb pull /data/sdcard/gentoo.tar.gz i:/Gowtham/software/Linux
# copy files from pc to phone
adb push <source> <destination>
# reboot
adb reboot
## install apk
adb install Magisk-v27.0.apk

# termux
# ------
sshd # starts ssh server on port 8022
Ctrl+A # move cursor to beginning of line
VolumeUp+A # Left arrow key

# fastboot
- `sudo apt install 

# root
install adb on pc
download twrp.img and Magisk.zip to pc
connect phone to pc
adb push twrp.img /sdcard/
adb push twrp-installer.zip /sdcard/
adb push Magisk.zip /sdcard/
adb reboot bootloader
fastboot boot twrp.img
install -> twrp-installer.zip
uncheck, reboot after flash
swipe to flash
reboot->recovery
install -> magisck.zip
uncheck, reboot after flash
swipe to flash
reboot->normal

## pixel3a
- Android version 12(SnowCone(S)) BuildTools-31
- 

## pixel8
- fastbootmode: powerBtn+upBtn->restart->hold downBtn till fastboot screen
- fasbboot flash init_boot magisk_patched-28000_Ba59w.img