Do these 3 things before closing this tab:
1Repair Windows errors before they cause bigger problems2Scan for outdated or missing drivers - takes under a minute3Clear out junk files and repair common Windows errorsYes—an old Android phone can work as a dedicated keyboard if an app supports Bluetooth HID on your phone and the computer or other host. Keep it on a compatible charger for long sessions, then test the exact screen-off and reconnection behavior you plan to rely on. If by “connected” you mean online, that is a separate setup from sending keyboard input.
Choose how the phone will send keyboard input
First check the phone’s model and Android version, along with the target computer’s operating system and Bluetooth or USB capabilities. App support and device hardware determine whether either method will work; the fact that Android supports a protocol does not mean every phone implements it.
As an Amazon Associate I earn from qualifying purchases.
| Option | What it does | What to check |
|---|---|---|
| Bluetooth HID | Sends keyboard input wirelessly to a compatible host. | The app must support Bluetooth HID on your Android version, and the host must support Bluetooth. Pairing alone may not establish an active keyboard-input session. |
| USB through an app and helper | Sends input over a cable in apps that provide a USB mode. | The app may require USB debugging, a companion computer program, and a particular host operating system. USB roles and accessory support depend on the phone. |
| Internet tethering | Shares the phone’s internet connection; it does not make the phone a keyboard. | Choose Wi-Fi, Bluetooth, or USB tethering separately, and check Android-version and operator restrictions. |
Set up Bluetooth keyboard input
Check app and host compatibility
Use an app that explicitly supports Android Bluetooth HID and your intended host. For one documented example, F-Droid lists Bluke 1.0.7 as requiring Android 7.0 or newer; that requirement applies to this app version, not to every Android keyboard app. The listing says: “No installing server apps or background clients, just pair, connect and it works.” Treat that as Bluke’s product description, not a guarantee for other apps or devices. See Bluke on F-Droid.
Free tools Windows power users keep installed
One-click scans. No signup required.
Pair and verify actual input
- Install the chosen app and follow its instructions to enable its Bluetooth keyboard function.
- Use the host’s Bluetooth settings to find and pair the phone, following any confirmation prompts shown by either device.
- Open a text field on the host and type a short test. Confirm that keystrokes arrive as keyboard input; a generic “paired” or “connected” status by itself may not confirm that the HID session is active.
Use USB only when the app supports your setup
A USB keyboard route is app-specific, not a universal Android feature with one standard setup. GlassHID, for example, documents a USB mode that uses ADB forwarding, USB debugging, a cable, and a Windows helper. Its instructions describe that implementation; they do not establish that the same approach works with every Android phone, app, or computer. Check GlassHID’s documentation for its requirements before enabling debugging or relying on a USB connection.
#1 Best Overall
- Full 3-System Compatibility & Wide Device Support: Perfectly compatible with Android, iOS and Windows three major systems. Works seamlessly with Samsung tablets, iPads, iPhones, laptops, smartphone, android, iOS, windows etc
- How to Switch Systems: Switching to the corresponding system will improve compatibility and higher work efficiency (“FN + A” is for iOs , “FN + S” is for Windows, “FN + D” is for Android )
- Enhanced Oversized Keycaps：27% bigger than standard keycaps. The spacious surface minimizes accidental presses and ensures comfortable typing for long hours
- 5 Adjustable Angles & Foldable Stand for tablet or phone, It effectively eases hand and eye fatigue during long hours of use, helping you stay focused and work more efficiently
- Long Battery Life & Smart Power Saving：Built‑in rechargeable lithium battery, Type‑C fast charging (full charge in 2–3 hours, last up to 200 hours with the backlight off, and 3-5 hours with the backlight on). Auto sleep mode after inactivity to save power, no frequent charging needed
Android’s Open Accessory (AOA) support also depends on the device’s hardware. AOSP documents HID support in AOA v2 on Android 4.1 and later, but that protocol capability is not evidence that a particular phone supports the required accessory mode. Read the AOSP accessory-mode documentation.
Keep the phone powered for long sessions
For a stationary setup, connect the phone to a charger and cable compatible with its port and charging requirements. Google recommends plugging devices in during tethering to extend battery life; it does not specify a charger or guarantee how long keyboard use will run on any phone. A USB data connection may or may not also charge the phone, depending on the device and configuration, so check the battery indicator in your actual setup. Google’s tethering instructions cover the recommendation to plug in.
Rank #2
- 3 Devices Switch with A Single Clicking: This keyboard is able to connect to 3 devices at the same time. You can switch between 3 devices with a single key clicking.
- Functional Built-in Cradle: The smartphone or tablet can be placed in the cradle for better viewing and typing. The heavy duty keyboard allows you to type firmly even with the cellphone or tablet standing in the cradle.
- Broad Compatibility: Use with all four major operating systems supporting Bluetooth (iOS, Android, Mac OS and Windows), including Computer, Desktop, PC, Laptop / iPad Pro, iPad Air, iPad, iPad Min, iPhone, Smartphone / Android Tablets like Samsung Galaxy, Surface etc.
- 6-Month Battery Life: Rechargeable lithium battery with an industry-high capacity lasts for 6 months with single charge (based on 2 hours non-stop use per day).
- Package contents: Arteck Bluetooth Keyboard, USB-C charging cable, welcome guide, our 24-month warranty and friendly customer service.
Lowering screen brightness or letting the display sleep can reduce an always-on screen’s power use if the keyboard app remains responsive. Test before leaving the setup unattended: app behavior with the screen off, lock-screen behavior, app restart, host sleep and wake, and Bluetooth disconnection and reconnection can vary by app and manufacturer. Android Doze defers some background activity while a device is idle, but AOSP says Doze does not engage while a battery-powered device is plugged into a charger; neither point guarantees that a particular keyboard app will keep running. AOSP’s power-management documentation.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
- Try the complete setup with the screen off and locked.
- Test whether the app reconnects after the host sleeps and wakes, or Bluetooth is interrupted.
- Change battery-optimization settings only if the app developer documents a need. Exempting an app can increase battery use.
Keep keyboard input separate from internet access
Bluetooth HID carries keyboard input; it does not itself share the phone’s internet connection. If the host also needs internet access, configure tethering separately using Wi-Fi, Bluetooth, or USB as appropriate. Google’s instructions note that tethering steps can depend on Android version, that mobile operators may limit or charge for it, and that Mac computers cannot use Android USB tethering in the cited guidance. Review Google’s tethering guidance and your operator’s terms.
Quick Recap
Rank #4
- 【Folding Bluetooth Keyboard & Phone Stand Holder】Extremely thin design of the portable folding keyboard allows you to fold it up and put it in your pocket or bag without taking up too much space. The phone stand holder, best companion for folding keyboard, gives you perfect screen angle. Near-standard size design provides accurate, fast typing, just like the desktop keyboard you are used to. Quiet keys allow you to focus on your work. Perfect gift for travel and business trips!
- 【Sensitive Touchpad Foldable Keyboard】Upgrade sensitive touchpad supports multi-touch, so you can control the device without using mouse. More convenient and efficient! (NOTE: IOS 13.4 and below or Android 3.0 and below are not supported!!!) Built-in rechargeable battery can last for 48 hours or 560 hours after 2-3 hours of charging. One full charge last enough for your short business trip or vacation!
- 【Exquisite & Lightweight Portable Keyboard】Dark Black matte exterior, made of ABS+PC material, lightweight but sturdy, without fear of daily wear and scratches. The elegant matte design, excellent touch and clean look make it a perfect match for your tablet, phone and laptop. Only 5.53-ounce, palm-sized keyboard can be folded up and carried around. Provide you with maximum convenience with minimal weight and size. It must be a good choice for editors!
- 【Stable Connection & Wide Compatibility】Samsers Bluetooth keyboard supports seamless connectivity to all your Bluetooth devices (iOS, Android and Windows). Maintain a stable connection and provide fast response to the device within 10 m. Simply turn on the keyboard and automatically connect to the last connected device. With a Samsers keyboard, you can record all your ideas at any time! (NOTE: this bluetooth keyboard is not compatible with various computer sticks)
Rank #3
- 2026 New Snap-Off Design: The cover now detaches. So you can separate the stand from the keyboard for a better typing angle and more viewing freedom. Don’t need it? Just snap it back with magnets and fold it up like before.
- For Tablets & Large Screens: Enhanced layout with larger keys and additional shortcuts, tailor-made for comfortable typing on iPads, Android tablets, and foldable phones (Android/iOS/Windows compatible).
- Productivity Boosters: Orange Keys + 7-Color Backlight: Color-coded orange keys for easy navigation. Enjoy customizable seven-color backlight illumination for day or night typing.
- Seamless Dual-Device Switching: Type on two different devices? Switch instantly between them with Fn + "1" or "2".
- 7-Color Illuminated Typing: Experience the new seven-color adjustable backlight, combined with high-contrast orange navigation keys, for effortless typing in any environment. NOTE: The backlit illuminates the perimeter and the gaps around the keys, creating an ambient glow, but letters/symbols on the keycaps themselves are not translucent and do not light up.
What to verify before relying on it
- Confirm the app supports the phone’s Android version and the host you plan to use.
- Verify keyboard input with a real typing test, not only a Bluetooth status label.
- Check whether your USB mode requires debugging, a helper program, or a specific computer OS.
- Confirm the phone keeps charging in the chosen arrangement and stays responsive under the screen-off and lock conditions you intend to use.
- Test recovery after app restart, host sleep, or a lost connection before treating the setup as unattended.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
