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 ?
Too much of desire. Mobile phones are not meant for mining even how good the specifications is. Although that is possible in the future, it will just be considered once mass adoption take place. When I say mass adoption, bitcoin is now mostly used as a currency and accepts at majority of countries in the world.
Mining is not for small time, let's be straight about it. If one wants to pursue mining then go purchased mining rigs and not with the used mobile just to think that it will more less expensive.
From now on, erase the mindset of getting into mobile mining and think of other way around.