.mp4 files produced from Premiere Pro will not work on Samsung S9 - wrong codec?

[AshMashMash]

In brief: I have produced an .mp4 video (timelapse with no audio, in 4x5 crop so an odd shape) file using Premiere Pro. It works perfectly on PC.

When I transfer it to my Samsung S9 phone it will not work: grey screen, won't play. I tried various transfer methods.

I had this problem intermittently over the past few months: I work-around I had was to upload the .mp4 (from Premiere Pro), into Photoshop, save again as .mp4 via Export >> Render Video, and although the file size was 3-4x that worked fine on my phone. This however now produces a file which (on the phone) is not a 4x5 crop and so is useless.

From all the research I have done it seems likely one of the codecs used in the .mp4 is not supported by my phone. I have tried every setting in the Export diaglog box and without success. Different file types often won't allow the 4x5 crop so are a no-go. 

Can anyone help me find a solution or work-around? I would be most grateful!

Info:

Premiere Pro version: 14.0

Photoshop version 21.1.2

File size: 2942 x 3676 px, at 25fps

Export settings:

Samsung S9 running Android Version 10
Thanks in advance!

[AshMashMash]

I have an update: I found out that regular movie films work fine in .mp4 when transferred to mobile device. But... the timelapse files (which are 25fps / 59.97fps / 60fps .mp4 files which seem identical as far as I can tell) still do not work!

Does anyone have any ideas on anything I can try at all?! Very frustratig.

[AshMashMash · Accepted solution]

SOLVED - Ok, now it seems obvious right? The file dimensions were too large for the android .mp4 codec... some of my (timelapse) file dimesions were >4000 x >3000 or so (images from camera turned straight into frames in video). Codec couldn't handle it.

Decreased to 1080 x 1350 and works perfectly now. Posted in case anyone has this issue in future.

[alan5C85]

and how do you change the file dimensions