Note: First boot takes 3-5 minutes as the dex2oat compiler optimizes system apps.

The model number suggests a specific configuration of an embedded board.

The Verdict: This is an Industrial Android Touch Panel. It is designed to be mounted into a wall, a machine, or a kiosk. It is not a handheld device with a battery; it is designed to run 24/7 on constant power.

After connecting via USB to the OTG port:

# Check if the board is detected
adb devices
Based on the hardware string EVB3561SV-W-65-M0, this device is not a mainstream consumer phone from a brand like Samsung or Xiaomi. Instead, it is a development board or an industrial Android panel PC (likely a touchscreen monitor or kiosk system) produced by a manufacturer specializing in embedded systems (likely associated with EVB or similar industrial ODMs).
Here is an informative review and technical breakdown of the EVB3561SV-W-65-M0 running Android 10.