But Ethereum is the second most popular crypto. I believe in ETH

What does BTC bring in? It's the biggest, because it was first. Now there are many other growing projects.

I would not single out bitcoin as the best, a lot of crypto currencies have a different, applied value.

I prefer non-custodial exchanges for my transactions, they're quite convenient. Shapeshift is popular.

Why not? What's the risk?

binance, CEX.IO are the best exchanges which I personally recommend you.

I prefer my own wallet but if I use any Exchange my favorite one is Bit z.

I mean, there are projects that have already released platforms. You can store tokens in your accounts. If the part is left in the personal account, and the part is already transferred to the wallet, then the risks are minimized.

CoinDeal.com supports mobiles. But as I know they are working on app for the platform