I would go to electroneum if you talk about mining in mobile. Mobile phone mining has been invented by electroneum developer in 2016. I dont think it will going very well with other project.
Unfortunately it's not working anymore, Electroneum team have decide to leave proof of work behind and also the mobile mining isn't working anymore, this project is actually blessed by good team, since launch they have deliver very well, it's a project worth holding
What you said is right, previously many users are using this Electroneum mining through mobile but later mobile mining customers have been decreased due to the battery is heated, so we should be very careful with mobile mining companies, and it will give much profit to the investors.