I’ve been writing posts on the btt forum for a year and a half in various ICO signature campaigns using my Android mobile phone. Got used, quite comfortable. However, it is desirable to have a large screen in the phone so that the finger does not fall on two adjacent letters at once. However, it is better to trade on the stock exchange on a laptop, in which the functional parameters are much higher than in a mobile phone. In any case, my mobile phone freezes when entering most exchanges.