Just downloaded the game (for android), and just started it (reached the island), but I noticed, there's no Scroll Back or previous message feature? I've misclicked a few times, and other than the log, there seems to be no way to replay the previous text.

Is there one in the options menu that I'm just not seeing or is this a feature in the works?

There is rollback on PC, so either it's not part of the port or you're using the wrong gestures to get it.