This is the universal build of Serial USB Terminal 1.56. It contains native libraries for every CPU architecture (arm64-v8a, armeabi-v7a, x86, x86_64), so it installs on any Android device. The trade-off is size — it's larger than per-architecture variants. Pick this one if you're unsure which CPU your phone has, or if you plan to share the APK with multiple devices.
File size: 2.2 MB • Min Android: 18 • Target Android: 34 • Version code: 100 • Framework: Native (Java/Kotlin) • Permissions: 8
File Information
| Package Name | de.kai_morich.serial_usb_terminal |
|---|---|
| Version Name | 1.56 |
| Version Code | 100 |
| Architecture | Universal |
| Min Android Version | Android 18 (API 34) |
| Main Activity | de.kai_morich.serial_usb_terminal.MainActivity |
| Framework | Native (Java/Kotlin) |
| File Size | 2.18 MB |
| Signature (SHA1) | FC7BCC2AE29411A2A9FB086E19E1C1F0DAFFFADB |
| File Hash (SHA256) | 7c507c31f02bf4959c0c80af2f2429c410a7582705bd9df1b372ec6e371abfb0 |
What's New
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
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
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
Download Serial USB Terminal APK
Fast, free and safe download.
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.
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Frequently Asked Questions about Serial USB Terminal APK
This is the universal variant — a single APK that contains native libraries for every CPU architecture. It installs on any Android device but is larger than per-architecture variants.
Yes — the APK's signature has been cryptographically verified against the publisher's signing key. The SHA-256 hash is shown in the File Information panel so you can independently confirm the file matches the original release.
Android 18 (API level 34) or newer. Older devices will refuse the install.
Install a free app like 'CPU-Z' or 'Droid Hardware Info' from the Play Store and look at the ABI / Instruction Set row. Most phones made after 2017 are arm64-v8a; if in doubt, download the universal variant.
All variants are functionally identical — same features, same version. They differ only in which CPU architectures the native code is compiled for, and (sometimes) which screen densities the included graphics target. Pick the one that matches your device for the smallest install size, or pick 'Universal' if you're unsure.