There is a new pull request by JamiKettunen against master on the void-packages repository

https://github.com/JamiKettunen/void-packages mobile-config-firefox
https://github.com/void-linux/void-packages/pull/43313

mobile-config-firefox: update to 4.0.0.
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#### Testing the changes
- I tested the changes in this PR: **NO** (I'll hopefully get to this soon and check how it works on my OnePlus 5T)

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A patch file from https://github.com/void-linux/void-packages/pull/43313.patch is attached