When I used it to create wallet directly on Bluewallet, I did not see anything like I should include passphrase, but I can be able to select the wallet type, or to provide entropy (which would be similar to throwing of dice).
It's the first time I heard about a mobile wallet providing this kind of feature. It should be a primary criterion though, since several mobile wallet have been hacked because of their lack of entropy in the past. On which form could we enter entropy? Only base 6 numbers(dice) or decimal, binary and hexadecimal value are also accepted?