Turn your phone into a powerful Bluetooth keyboard and mouse (no servers needed)
This is a gem of an app that turns your android phone into a Bluetooth mouse and keyboard for other devices.
Edit:
What makes this app different from other "remote control" apps?
Most of them need a "server" or "companion" app to be installed on your other device. This app doesn't. It just needs pairing via Bluetooth.
I use it to control an Android tv box. As you know typing with on-screen keyboards on tv screens is an absolute pain.
With this app you can type anything on your smartphone and send it to any text field on your other device. You can also add cistom keys and key combinations. Note the CTRL+A shortcut key i have added for select all in the screenshot for example.
It can also work as a mouse with customizable buttons.
As an alternative, you could consider KDE Connect. It does a lot more than just keyboard and touchpad. You can even send files both ways extremely quickly.
It looks like you have to install KDE connect on both devices, and they have to be on the same network. Handy, but completely different type of app and method of execution.
While i adore the project. I tried it for a year and it got to the point that i had made a script to restart the process as the reliability of it actually working was non-existent. Off course it never worked when it could've saved some time. I usually ended up telegramming files.
This was on android & windows connection maybe 1-2 years ago. Maybe it's gotten better. I haven't had to use it as the Motorola Ready For -desktop companion is doing good.
I have several too. I still find usefulness in this as you can copy-paste text to the other device, like long passwords/emails. I would have killed to have something like this when i had to setup my parents smart-tv.
There are a slew of Android TV remote apps that do all this and more, like including home/back buttons, integrated search etc. They also pair easier. The first party Google TV app covers this smoother than a BT keyboard/mouse app.
My tv is my second monitor. I have used this app almost daily for an entire year. It's pretty good. The custom layout needs some work. Either that or I'm too dumb (it's probably that).
I used for years Unified Remote, but this app stopped in time. So I switched to KDE Connect, but this was very redundant with Join (my other app to connect my device).
This one... It's perfect! And no server required opens up more and more use cases :)