Serial USB Terminal Icon

Serial USB Terminal 1.57

By Kai Morich • January 13, 2026
Tools Universal Native (Java/Kotlin) 2.43 MB
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File Information

Package Namede.kai_morich.serial_usb_terminal
Version Name1.57
Version Code102
ArchitectureUniversal
Min Android VersionAndroid 21 (API 36)
Main Activityde.kai_morich.serial_usb_terminal.MainActivity
FrameworkNative (Java/Kotlin)
File Size2.43 MB
Signature (SHA1)FC7BCC2AE29411A2A9FB086E19E1C1F0DAFFFADB
File Hash (SHA256)a832674205581c32d25b7d46bb4894281646c25c7d7ce9aecd5e73053cfe4b4d

What's New

1.57 2025-11-07
FIX copy from main text view with unmodified spaces
INFO Android 5.0 as minimum version
1.56 2025-03-17
FIX single CR handling for newline CR+LF setting
1.55 2024-07-21
NEW flow control for FTDI, PL2303, CP210x
1.54 2024-06-02
NEW disable send button if send takes more than 0.2sec
FIX sending large data at very low baud rate caused 'connection lost'
FIX reduce CPU/battery usage when control lines are shown
1.53 2024-01-12
FIX improved notification enabling

App Description

'Serial USB Terminal' is a line-oriented terminal / console app for microcontrollers, arduinos and other devices with a serial / UART interface connected with a USB to serial converter to your android device.

This app supports USB to serial converters based on

- FTDI FT232, FT2232, ...

- Prolific PL2303

- Silabs CP2102, CP2105, ...

- Qinheng CH340, CH341

and devices implementing the USB CDC protocol like

- Arduino using ATmega32U4

- Digispark using V-USB software USB

- BBC micro:bit using ARM mbed DAPLink firmware

To connect USB to serial converters, your android device must support USB OTG aka. USB host mode. Most devices support this today, but in case of issues check with one of the various USB test apps, if host mode is enabled in your android kernel.

All features in this app are free. In-App purchase is only used for the 'Donate' option.

Looking for source code? Here you find a simplified variant of this app:

github.com/kai-morich/SimpleUsbTerminal
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APK Permissions 8

  • android.permission.ACCESS_NETWORK_STATE
  • android.permission.FOREGROUND_SERVICE
  • android.permission.FOREGROUND_SERVICE_CONNECTED_DEVICE
  • android.permission.FOREGROUND_SERVICE_REMOTE_MESSAGING
  • android.permission.INTERNET
  • android.permission.POST_NOTIFICATIONS
  • com.android.vending.BILLING
  • de.kai_morich.serial_usb_terminal.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
APK Verified

The cryptographic signature guarantees that the file is safe to install and was not tampered with in any way.

Developer

Name: Kai Morich

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