I'm using a Galaxy S8 on AT&T and I have a problem with attaching pictures in the correct order.

When I try attaching multiple pictures through the gallery preview that pops up to send in a single text, it gets attached and sent out of order.

It would be great if it was added in the order it was selected or at least in chronological order by date and time picture was added to phone.

For example, let's say I took 3 pictures in one day:
First picture was taken at 10am
Second picture was taken at 2pm
Third picture was taken at 8pm

When I try to attach all 3 pictures by selecting all three at once through the picture preview gallery that pops up, instead of it sending those picture in the order I had selected it or even the correct chronological order, it'll attach it as the third picture first, second picture second, and first picture last,.

Based on my analysis, when the pop up gallery preview opens up and you select multiple images to attach, it seems like the order of attachment is as follows:
The top row, right-most column is always the first to be attached. Then it moves leftwards on the top row. Once it attaches all the pictures on the top row, it'll move to the next row down and continue attaching pictures from right to left.

Hope that makes it easier for you to debug the problem and come up with a proper coding solution. Seems like an easy fix. I'll be happy to share additional info if needed. Love this texting app and have been using it ever since I got on Android some 5 years ago!