I have had a pretty stable Mavic Pro system for the last few months with
Huawei Ascend XT2, Android 7.0
DJI GO4 app version 4.2.4
RC firmware from version 1.04.02
MP firmware from version 1.04.02
But I broke my phone and had to buy a new one (same model but no longer $49). Initially had problems with photos’ not downloading to the phone and I decided to upgrade the works.
DJI GO4 from play store, 4.2.6, restart
RC firmware update from 1.04.02 to 1.04.03 (upload took 20 minutes with DJI Assistant)
MP firmware update from 1.04.02 to 1.04.03 (DJI Assistant stuck at 9% for a long time;
quit and uploaded with the DJI GO app - this upgrade went steadily,
but not fast, around 20 minutes or so)
[DJI Assistant currently allows the option to downgrade back to 1.04.02 or 1.04.01 assuming you can get DJI Assistant to work (usually it does for firmware upgrades, not much else for me)]
Still had no DJI ALBUM photo directory but after I deleted some other photo directories transferred from the old phone DJI ALBUM photo and DJI RECORD video directories showed up. Hovered in the back yard for a while and did a couple hand catch landings. Now packed up and hopefully this combination is stable. Did not want to change things before a trip but didn’t expect needing a new phone either.