I am trying to export an MP4 from my Dropbox to my Iphone 6c iOS 10.3.3 but am
repeatedly getting the 'sorry this type of video cannot be saved to this device'.
Have searched around the internet and found this question asked loads of times, yet am unable to find a clear answer as to what the cause is/how to get around this.
I've exported the video from premiere, just to ensure I'm not doing anything wrong I've added a screenshot of the export settings below.

Any help much appreciated as it's incredibly frustrating. Thanks.