Version 7.16.03 from October 2019 has an option to select GRC Pool and 'mine' gridcoin.
https://boinc.berkeley.edu/download_all.php
Or a direct download link from Berkeley to apk file here.
Google Play version is older, from 2016 and does not have an option to attach GrcPool. I was reading so many posts on how to edit BOINC app so I was not looking for an official version. But here we are and I installed it today.
Instructions: There was a great description with screenshots in this Publish0x post. With an exception that BOINC software can be downloaded from the official site above.
BOINC:
Download version 7.16.03 from BOINC website (not Google play)
Register at https://grcpool.com/
in menu select "add project", then "add account manager", then select Grcpool and login with your credentials.
Select projects you like to compute at https://grcpool.com/. Save your selection! (Tip: Rosetta requires more memory. World community grid runs on almost all devices incl. very old tabs).
Go to BOINC and sync with Grcpool.
There will be a couple of days till you see credits in GrcPool. GRC address has to be added to transfer Gridcoins.
This version is a testing version and may not work properly on all devices.
Check and change BOINC set up to select best options to manage BOINC: when charging, temperature limits, CPU numbers.
My phone is not heating up if works on all CPUs and not moved. When in pocket, it may heat so set a lower limit. Maybe 35 grad.
Where to stake GRC? More in this article:
https://read.cash/@Swca.ch/coinomi-to-delist-gridcoin-grc-on-september-23rd-69a0fccb
Even more in this group:
https://read.cash/c/citizenscience-with-boinc-8cf5
Gridcoin website: https://gridcoin.us/
Wow this is so cool thank u for this article.🙃