If I decided to save bitcoins in bank, how will deposit rate be changed compared to dollar or other currencies? Will it have much lower percent?
Its sad to say but there are no bitcoin banks existing online. If you want to earn then just hold your bitcoins in your wallet and wait for an inflation. That way you will get more profit out of your investment. The only way to save in banks is to convert your bitcoin into fiat currency and then deposit it on banks. But holding bitcoin is much profitable than savings on bank.
Actually, there are still no banks who accept bitcoin as deposit of their client. I think if you want to save your bitcoin just put it on your online wallet to keep it safe and secure. Saving bitcoin will help to sustain all your need in the near future. In addition to that, I also agree that by holding bitcoin will help you to make a good profit.