r/dumber_os

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We've assessed our stock so we have enough in reserve for refunds and are releasing our last stock of phones!

UK refurbished: https://dumbermini.com/products/doov-r77-pro-refurbished

EU + World: https://dumbermini.com/products/simple-phone-1

We are releasing 29 refurbished phones to the UK only at £79 and 15 phones to the EU + world at our standard £109 price.

Shipping will be quick for our EU + world phones directly from our warehouse (around 3-10 business days depending on location) and slightly slower for the UK phones where they can be dispatched on the weekend from my house!

The latest DumberOS update has just been rolled out! Your phone should notify you about it, and you can also update manually in Settings->System->Updates.

• Updated Android security patch to March 2026.
• Added an app installer to the vanilla branch, called "More Apps" with a dozen recommended apps.
• Moved Browser, Organic Maps and Music Player to More Apps.
• Added a "Zoom out screen" button in the recent apps menu, to temporarily increase DPI.
• Fixed Parental Controls in the gapps build.
• Improved PIN entry accuracy.
• Fixed some VoLTE disconnection issues.
• Fix SIM PIN entry dialog layout and physical key support.
• Fixed issue with MicroG updates being removed after reboot.
• Updated MicroG version.

Hello everyone, I’ve been using DumberOS on a Qin F21 Pro for the past few weeks and it has worked quite well. However, I have two questions.

First, does the Qin F21 Pro have FM radio capability? Are there apps to use the radio transmitter in case it is built in?

And second, I’ve been using Keymapper to control the volume (since the phone doesn’t have physical volume keys), but when I program a key—for example, double-clicking key 8 to open volume controls—that key no longer works for anything other than the programmed action and doesn’t respond to anything else when pressed. Is there any way to fix this or a better app to remap keys? Any recommendations for setting up physical volume controls?

Hi guys,

Wondering how you're getting on with reintroducing WiFi calling back in? Literally the only thing stopping me from ordering at the moment.

I have no signal at work or at home so it's non negotiable now the femto cells/boosters don't work anymore.

I have a Doov P77 Pro, not directly from the Dumber Mini official shop but purchased elsewhere and flashed. There are some instances where it behaves differently to the stock version, e.g. the usb-c headphone doesn’t work, keybinds in the previous versions were patchy &c.

In the March update, it fixed the Answer and End buttons, however, I did notice that under a locked screen, I can only ’swipe up to answer’. (once unlocked, the ‘Answer’ button works).

I often have difficulties in the ’swipe up to answer’ geature, namely, my previous Andriod phone requires ’swipe left to answer’ and on my iPad it is swipe right to answer. As a result, I often forgot which is which and end up getting it wrong, swiping all sort of directions in panic.

So my question are—which setting governs the ‘Answer’ and ‘End’ buttons behaviour under a locked screen? Secondly, if it is a bug of my own doing, how do I change the ’swipe to answer’ gesture to a green and red button for clarity?