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Officially, the Lego Boost software is only available for devices with at least an 8 inch screen:
https://www.lego.com/en-us/service/device-guide/boost
However, it would be nice to install the software on an old phone rather than a tablet for my child to use. Is this possible? How?
Edit: LEGO now officially supports tablets and smartphones. This question is now mostly irrelevant, but it could still be useful as a guide to installing the app on an unsupported device.
You can install the software using an alternative App Store such as APKPure. You can alternatively download and install the APK and OBB files directly from various online sources as demonstrated in this video. Once installed, this software seems to work for me on my Galaxy S4, and I assume it would also work on other Android devices. I can connect to and control the Move Hub without any issues, but I haven't tested all features of the software.
I was unable to get this to work on an S3. The app crashes during the loading screen. This could be due to many factors, but I suspect screen resolution could be one culprit, as the S3 has a 720p screen and the S4 has a 1080p screen.
It should also be noted that these devices aren't officially supported by TLG, so this software may be buggy and/or stop working in the future.
Devices confirmed working:
Devices confirmed not working:
The official list of devices can be found here
