Is there a side job that can be done with a smartphone? Recently, even when working for companies, there are many cases in which side jobs are permitted. However, there are limits to the side jobs that you can do in your spare time. On the other hand, if you can do a side job with a smartphone, you will be able to earn pocket money more easily than a side job that requires a general PC. Then, what kind of side business can you do with your smartphone? From now on, I will introduce the side business that can be done with a smartphone.