Would you be interested in a cryptocurrency with its own blockchain that can easily be mined on both android and iOS phones?
It is not possible to mine any crypto through mobile right now because of high mining difficulty of almost all coin and if there will be some new coin out there in future, than it will be not worth to mine because mining difficulty for it can increase insanely high in no time.
Some cloud mining platform are developing mobile apps for their service but that can't be referred as mobile mining.
Yes, it is really true that it is not possible to do bitcoin mining through smartphone nowadays because the application is so heavy and a smartphone memory cannot contain it. You're smartphone might hang and malfunctioned if you will forced to use an application for bitcoin mining on your smartphone that is not supposed to be installed in it because it is not meant for smartphones. It is made for laptop, personal computers, etc that has bigger memory.
agree, I doubt the strength and resilience of the mobile phone, whether strong hold the heat generated. Laptop that has a cooling fan is not recommended for use as a mining tool, how about mobile phones that do not have cooling fan