Now I tried shorting at binance but unlike bitfinix I actually had to "Borrow" funds at a cost despite I have sufficient USDT in wallet.
Hello you dont actually borrow funds if you want to do shorting.
When you are gonna set your order make sure that your sell order are sufficient for the leverage you are going to use such as
10x, 20x, 50x and even at 125x (for BTC)
You can refer to this image the
highlighted option can help you set correct budget for your chosen leverage.
I dont advise borrowing funds cause it eats a lot of commissioned when you are doing leverage. Also tip, deposit some bnb on your future account for discounted fee when you do futures. Mobile trading app is for expert only because even me i didn't know how to trade in mobile phone
Not really sure about that. Im no expert but Im sufficiently can bid or make orderbook, execute SL and Take profit using the mobile.
For me its convenient, regards to trading view always set your phone auto rotate so you can manuever it on a horizontal view.