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Connection

Selection

If exactly one device is connected (i.e. listed by adb devices), then it is automatically selected.

However, if there are multiple devices connected, you must specify the one to use in one of 4 ways:

  • by its serial: 
    scrcpy --serial=0123456789abcdef
scrcpy -s 0123456789abcdef   # short version

# the serial is the ip:port if connected over TCP/IP (same behavior as adb)
scrcpy --serial=192.168.1.1:5555
  • the one connected over USB (if there is exactly one): 
    scrcpy --select-usb
scrcpy -d   # short version
  • the one connected over TCP/IP (if there is exactly one): 
    scrcpy --select-tcpip
scrcpy -e   # short version
  • a device already listening on TCP/IP (see below): 
    scrcpy --tcpip=192.168.1.1:5555
scrcpy --tcpip=192.168.1.1        # default port is 5555

The serial may also be provided via the environment variable ANDROID_SERIAL (also used by adb):

# in bash
export ANDROID_SERIAL=0123456789abcdef
scrcpy
:: in cmd
set ANDROID_SERIAL=0123456789abcdef
scrcpy
# in PowerShell
$env:ANDROID_SERIAL = '0123456789abcdef'
scrcpy

TCP/IP (wireless)

Scrcpy uses adb to communicate with the device, and adb can connect to a device over TCP/IP. The device must be connected on the same network as the computer.

Automatic

An option --tcpip allows to configure the connection automatically. There are two variants.

If adb TCP/IP mode is disabled on the device (or if you don't know the IP address), connect the device over USB, then run:

scrcpy --tcpip   # without arguments

It will automatically find the device IP address and adb port, enable TCP/IP mode if necessary, then connect to the device before starting.

If the device (accessible at 192.168.1.1 in this example) already listens on a port (typically 5555) for incoming adb connections, then run:

scrcpy --tcpip=192.168.1.1       # default port is 5555
scrcpy --tcpip=192.168.1.1:5555

Prefix the address with a '+' to force a reconnection:

scrcpy --tcpip=+192.168.1.1

Manual

Alternatively, it is possible to enable the TCP/IP connection manually using adb:

  1. Plug the device into a USB port on your computer.

  2. Connect the device to the same Wi-Fi network as your computer.

  3. Get your device IP address, in Settings → About phone → Status, or by executing this command:

    adb shell ip route | awk '{print $9}'

  4. Enable adb over TCP/IP on your device: adb tcpip 5555.

  5. Unplug your device.

  6. Connect to your device: adb connect DEVICE_IP:5555 (replace DEVICE_IP with the device IP address you found).

  7. Run scrcpy as usual.

  8. Run adb disconnect once you're done.

Since Android 11, a wireless debugging option allows to bypass having to physically connect your device directly to your computer.

Autostart

A small tool (by the scrcpy author) allows to run arbitrary commands whenever a new Android device is connected: AutoAdb. It can be used to start scrcpy:

autoadb scrcpy -s '{}'