R40

R40
R40
Specification
Brand	Manufacturers: Other
Release Date	07 / 2025
Form Factor	Vertical
SoC	RK3326
CPU	Quad-core @ 1.3Ghz
RAM	1GB
Screen Size	3.5"
Resolution	640x480
Aspect Ratio	4:3
Screen Type	IPS
OS	Linux
Internal Storage	No
External Storage	2x MicroSD
WiFi	No
Video Output	None
Speaker	Mono
3.5mm Audio Jack	Yes
Battery	3000mAh

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Edit specs

Warning

There are probably 3 versions of this handheld. One with a weaker chip and restricted OS like the SF3000/GB350. A newer one appeared in November 2025 which looks like it has the RK3326 chip and runs ArkOS. There is also a GA36 mainboard version which is used in some R36S Clones.

Performance

RK3326 version

Similar to R36S Clone, with improved CPU and RAM.

CPU
Chip	Cores	Arch	Ghz
RK3326	4	64bit	1.3

RAM
Advertised	Actual
2GB	1GB

Price

~$30

Get the R40: AliExpress¹

↪ Handheld Buying Guide

¹ _{Buying through these affiliate links helps support the wiki. Your price stays the same. Commissions go toward devices, testing, documentation, and server costs.}

Colors

More Images

GA36 version

SF3000/GB350 version

Logo found on the SD card (SF3000/GB350 version)

RK3326 version

More Information

Manual (SF3000/GB350 version): File:R40 manual from temu.pdf

Videos

RK3326 version

Firmware

GA36 version

There is no working CFW for this version available.

SF3000/GB350 version

There is no working CFW for this version available.

RK3326 version

Custom Firmware:

1. ARKOS K36

ArkOS K36 works on this device with some minor hiccups.

Selection:

Screenfiles: Panel 5

Files: rf3536k3ka.dtb & rk3326-evb-lp3-v12-linux.dtb

2. ROCKNIX

RockNix works beautifully on this device.

Follow instructions to install here: https://rocknix.org/devices/unbranded/EE-clones/

Use your original rf3536k3ka.dtb file and run it through this website to generate dtbo file, place that file in overlay folder as per website instructions.

Lastly to fix sound run this script in linux: tes2.sh