I have seen bounty hunter doing well, I have also seen people who do not participate in bounty and are making it well with trading alone, but I have never seen anyone around me being involved in mining, I learnt mining is more risky and cannot just be done alone,
Mining wallet? Well that's a new one lol. I haven't heard about such, it seems you must have been mislead because nobody mines bitcoin with phone and definitely you can do it alone, if that was even profitable (mining on phone) then you'll be doing more harm to your device than actually participating in the mining industry. People don't talk much about mining because that area isn't for everyone, you will need to have some level of skills, information before you can record successful unlike other area that a noobs can get hold of them within days or weeks of participating like trading and investing.
For me the easiest has to be investing, there's no risk involved if you know what you're doing. Trading cones with risk as every market you enter stands a chance of rekting you irrespective of you been a professional trader
Investing is an easy choice no need to work or do complicated things, and investing gradually will increase your investment amount slowly and still should be based on a good knowledge and understanding of investing in Cryptoccurrency or bitcoin.
And to increase the investment amount, you can join several services according to your expertise and participate in other areas of this forum which will be paid in bitcoin or Cryptoccurrency.
and for mining issues I haven't thought that far.
I would not say that investing is an easy way to earn money. Yes, of course, it involves a minimum number of mechanical actions and you do not even need to get up from your chair, but the investment will work when you understand what you are doing. You can invest successfully for several years and then suddenly merge everything in one evening.