ADB & Scrcpy Usage Guide

This is a detailed guide about using Android Debug Bridge (ADB) and Scrcpy tools, covering common issues and solutions.

Resource Links

Scrcpy WiFi Connection Methods

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Method 1: USB First Pairing Then Switch to WiFi (Recommended)

Step 1: Initial USB Connection Activation

bash

# 1. Connect phone via USB cable first, confirm ADB can recognize
adb devices

# 2. Make device listen for TCP/IP connections (default port 5555)
adb tcpip 5555

Step 2: Disconnect USB, Switch to WiFi

bash

# 3. Check phone WiFi IP address (Settings → About Phone → Status Information)

# 4. Wireless connection (replace your_ip with actual IP)
adb connect your_ip:5555

# 5. Start Scrcpy
scrcpy

Common Command Parameters

Operation	Command
View device IP	`adb shell ip route` or `ifconfig wlan0`
Launch with specific device	`scrcpy -s your_ip:5555`
Reduce quality for speed	`scrcpy -m 1024 -b 2M`
Screen only, no control	`scrcpy -n`
Fullscreen mode	`scrcpy -f`

Multi-device Connection Issue Resolution

When both USB and WiFi are connected simultaneously, Scrcpy will show the following error:

ERROR: Multiple (2) ADB devices:
ERROR: --> (usb) askdlskdf device Redmi_Note_x
ERROR: --> (tcpip) 192.168.40.16:5555 device Redmi_Note_x

Solutions

Solution 1: Disconnect USB, Use WiFi Only (Recommended)

Unplug the USB cable directly, then run again:

bash

.\scrcpy.exe

Solution 2: Specify WiFi Connection

bash

.\scrcpy.exe -e

bash

.\scrcpy.exe --select-tcpip

Solution 3: Specify USB Connection

bash

.\scrcpy.exe -d

bash

.\scrcpy.exe --select-usb

Solution 4: Specify Specific IP Address

bash

.\scrcpy.exe -s 192.168.40.16:5555

Parameter Reference Table

Parameter	Meaning	Usage Scenario
`-d`	Select USB device	Want to use wired when cable is plugged
`-e`	Select TCP/IP device	Want to use WiFi wireless
`-s <serial number>`	Specify specific device	Precise control of multiple devices

Common ADB Commands

Command	Purpose
`adb devices`	View connected devices
`adb connect IP:port`	Wireless device connection
`adb disconnect`	Disconnect wireless connection
`adb shell`	Enter phone command line
`adb install xxx.apk`	Install application
`adb push computer_file phone_path`	Transfer files to phone
`adb pull phone_file computer_path`	Pull files from phone

Specifying Operation Target with Multiple Devices

When multiple devices exist, you can use the -s parameter to specify a particular device:

Command	Purpose
`adb -s 192.168.40.16:5555 shell`	Enter shell of specified device
`adb -s 192.168.40.16:5555 install app.apk`	Install app to specified device
`adb -s 192.168.40.16:5555 push file.txt /sdcard/`	Transfer file to specified device

ADB Shell Usage

Common operations after successfully entering ADB Shell:

View Accessible Directories

bash

# Enter storage directory (with permissions)
cd /sdcard
ls

# Or
cd /storage/emulated/0
ls

View System Information

bash

# Check Android version
getprop ro.build.version.release

# Check device model
getprop ro.product.model

File Operations (with permissions under /sdcard)

bash

cd /sdcard

# View files
ls -la

# Create folder
mkdir test_folder

# View current path
pwd

Exit ADB Shell

bash

exit
# Or press Ctrl+D

ADB Shell Practical Uses

View logs: logcat
Install app: pm install xxx.apk
Screenshot: screencap /sdcard/screen.png
Screen recording: screenrecord /sdcard/video.mp4
Reboot phone: reboot

Version Information

Current ADB version:

Android Debug Bridge version 1.0.41
Version 36.0.0-13206524

Notes

If the phone is not rooted, the su command will show Permission denied
Android 10 and below do not support audio transmission
It's recommended to unplug the USB cable after configuring WiFi connection to avoid multi-device conflicts
Ensure firewall is not blocking corresponding ports for Scrcpy

Logs

ps1

adb devices -l
List of devices attached
192.168.40.16:5555 device product:lavender model:Redmi_Note_x device:lavender transport_id:6

 user@DESKTOP-EH2GAQ2  ~\Downloads\scrcpy-win64-v3.3.4\scrcpy-win64-v3.3.4  .\adb.exe --version
Android Debug Bridge version 1.0.41
Version 36.0.0-13206524
Installed as C:\Users\user\Downloads\scrcpy-win64-v3.3.4\scrcpy-win64-v3.3.4\adb.exe
Running on Windows 10.0.26200
 user@DESKTOP-EH2GAQ2  ~\Downloads\scrcpy-win64-v3.3.4\scrcpy-win64-v3.3.4  adb.exe --version
Android Debug Bridge version 1.0.41
Version 36.0.0-13206524
Installed as C:\Users\user\AppData\Local\Android\Sdk\platform-tools\adb.exe
Running on Windows 10.0.26200
 user@DESKTOP-EH2GAQ2  ~\Downloads\scrcpy-win64-v3.3.4\scrcpy-win64-v3.3.4  adb -s askdlskdf shell
adb.exe: device 'askdlskdf' not found
 user@DESKTOP-EH2GAQ2  ~\Downloads\scrcpy-win64-v3.3.4\scrcpy-win64-v3.3.4  adb devices
List of devices attached
192.168.40.16:5555 device

 user@DESKTOP-EH2GAQ2  ~\Downloads\scrcpy-win64-v3.3.4\scrcpy-win64-v3.3.4  adb -s 192.168.40.16:5555 shell
lavender:/ $ su
/system/bin/sh: su: inaccessible or not found
127|lavender:/ $ exit
 user@DESKTOP-EH2GAQ2  ~\Downloads\scrcpy-win64-v3.3.4\scrcpy-win64-v3.3.4  adb pair 192.168.40.16:5555
Enter pairing code: 139422 # 自己的
error: protocol fault (couldn't read status message): No error

 user@DESKTOP-EH2GAQ2  ~\Downloads\scrcpy-win64-v3.3.4\scrcpy-win64-v3.3.4  .\scrcpy.exe
scrcpy 3.3.4 <https://github.com/Genymobile/scrcpy >
ERROR: Multiple (2) ADB devices:
ERROR: --> (usb) askdlskdf device Redmi_Note_x
ERROR: --> (tcpip) 192.168.40.16:5555 device Redmi_Note_x
ERROR: Select a device via -s (--serial), -d (--select-usb) or -e (--select-tcpip)
ERROR: Server connection failed

 user@DESKTOP-EH2GAQ2  ~\Downloads\scrcpy-win64-v3.3.4\scrcpy-win64-v3.3.4  adb connect 192.168.40.16:5555
connected to 192.168.40.16:5555
 user@DESKTOP-EH2GAQ2  ~\Downloads\scrcpy-win64-v3.3.4\scrcpy-win64-v3.3.4  .\scrcpy.exe -e
scrcpy 3.3.4 <https://github.com/Genymobile/scrcpy>
INFO: ADB device found:
INFO: --> (tcpip) 192.168.40.16:5555 device Redmi_Note_x
C:\Users\user\Downloads\scrcpy-win64-v3.3.4\scrcpy-win64-... file pushed, 0 skipped. 65.7 MB/s (90980 bytes in 0.001s)
[server] INFO: Device: [Xiaomi] xiaomi Redmi Note X (Android 10)
[server] WARN: Audio disabled: it is not supported before Android 11
INFO: Renderer: direct3d
WARN: Demuxer 'audio': stream explicitly disabled by the device

adb shell
lavender:/sdcard $ cd com
com.android.bankabc/ com.sfpay.mobile/ com.weilai.ssby.banana/
com.jifen.ac/ com.tencent.mtt/ com.wifi.ac/
lavender:/sdcard $ ip route
192.168.40.0/24 dev wlan0 proto kernel scope link src 192.168.40.16
lavender:/sdcard $ ip route | awk '{print $9}'
192.168.40.16

ADB & Scrcpy Usage Guide ​

Resource Links ​

Scrcpy WiFi Connection Methods ​

Method 1: USB First Pairing Then Switch to WiFi (Recommended) ​

Step 1: Initial USB Connection Activation ​

Step 2: Disconnect USB, Switch to WiFi ​

Common Command Parameters ​

Multi-device Connection Issue Resolution ​

Solutions ​

Solution 1: Disconnect USB, Use WiFi Only (Recommended) ​

Solution 2: Specify WiFi Connection ​

Solution 3: Specify USB Connection ​

Solution 4: Specify Specific IP Address ​

Parameter Reference Table ​

Common ADB Commands ​

Specifying Operation Target with Multiple Devices ​

ADB Shell Usage ​

View Accessible Directories ​

View System Information ​

File Operations (with permissions under /sdcard) ​

Exit ADB Shell ​

ADB Shell Practical Uses ​

Version Information ​

Notes ​

Logs ​

ADB & Scrcpy Usage Guide

Resource Links

Scrcpy WiFi Connection Methods

Method 1: USB First Pairing Then Switch to WiFi (Recommended)

Step 1: Initial USB Connection Activation

Step 2: Disconnect USB, Switch to WiFi

Common Command Parameters

Multi-device Connection Issue Resolution

Solutions

Solution 1: Disconnect USB, Use WiFi Only (Recommended)

Solution 2: Specify WiFi Connection

Solution 3: Specify USB Connection

Solution 4: Specify Specific IP Address

Parameter Reference Table

Common ADB Commands

Specifying Operation Target with Multiple Devices

ADB Shell Usage

View Accessible Directories

View System Information

File Operations (with permissions under /sdcard)

Exit ADB Shell

ADB Shell Practical Uses

Version Information

Notes

Logs