Am sure you already came across with
TAUcoin Blockchain lab? Based in Cambridge, UK. They are working on the Phone Mining Coins(PMC) open source technology based on server-less communication and lite energy mining consensus.
PMC technology enables your phone to mine tens of crypto assets independent from linking commercial servers. For example, any phone can mine London PMC, that is exclusive for London in the PMC world. Londoners will see the coin natively living in the app and use them for payment, chat and advertisement. The global phones network will secure and grow the city blockchain collectively.
Yes its already happening, but do you think this will work out? Considering phones' resources while running such a blockchain.
It is said that PMC is only exclusive for London users? Then why bother sharing it here and not only in the London local thread if ever the forum has it but I think many people are going to try it since they already saw it here. They will just use a London based IP address or they will use a VPN for them to mine a coin.
The coin, looks great as it has a lot of utilities. Maybe this coin has a potential to succeed later on compared to other phone mineable coins out there. I haven't seen any of them got trending or pumped a lot. Many phones now have a beast specs. Bigger ram, battery capacity, memory. They have now the capacity to do what most pc can do so a project like this can surely work out on them.