When will mobile phone can useable for minig. Is mining too much hard that mobile can not capable, which functions will make mobile capable for mining?and when ?
Using mobile phones for mining is not encouraging. It can destroy your mobile phone. The computers with high RAM or capacity are the recommended devices for mining. If you still want to try your luck with phone, then you may try. But hopefully, the phones may have supporting features in future.
I think it can be a matter of difficutly set for mining. Why not to make fairly easy tasks, but linked specifically to smartphone features. There's already one famous mobile mining project called Electroneum, but I guess they just made it too difficult to mine coins, so the project is nearly dead. At the same time, I can see potential problems with making mining easier. One could perhaps simply install an android simulator to a pc and pretend to mine from phone, while actually using much more powerful machinery. But I am sure that if someone really tried to make things work, such problems could be eliminated (the easiest way in this case would be to set an artificial mining limit which protects phone mining from pcs by not letting to mine more at a certain period of time than the best phones can. The difficulty could then be adjusted when technology moves forward).