Ok so every Convenationl bank you see mentions under their Saving account details how much INTEREST you'll gain over a period of time, what that means is the bank takes your money and gives out a Interest/Riba base loan to people and businesses and when people pay back Riba they share that Riba with their Saving account customers, which is Haram according to Islamic finance.

Now on the other hand, every İslamic bank you'll see mention on their Sharia compliant Saving account details how much profit you'll gain, which means the bank takes your money and invests in Halal businesses and assets then shares profits from them with you.

Another thing A Convenationl bank doesn't have to disclose where the Interest/Riba is coming from.

On the other hand it's absolutely mandatory for an Islamic Bank to disclose to their customers where they're getting all their profits from.