Now I have Android 6 on my phone. Android 6 has Adoptable storage feature. After OS update I got a suggestion to reformat my SD card to be used as internal storage.
BTW, when your SD card is formatted usual way, as a removable card, you cannot move an application to SD card. I’m absolutely sure that this was possible in Android 5.
Anyway, what one can expect from adaptive storage?
I expected to see one internal storage partition with size equal summary of internal storage and SD card. Moreover, I expected that I will be able to store big files on SD card “part” of this partition as well (see Moto G 2015, SD CARD, FAT and exFat article).
What happens in reality?
After conversion, I got a suggestion to move media and apps to SD card altogether. One can also move applications to SD card, manually.
I still see 2 partitions in setup.
But in my favorite file manager, I do not see SD card at all – only internal storage. So, I cannot place files on SD card!
This has nothing to do with my expectations.
BTW, conversion wizard said that this is critically important to use a fast sd card. My Transcend 16GB MicroSDHC (class 10) worked well for me.
So, I changed settings back to “removable media”. The price is – I cannot move applications to SD card, but I can place files there. Luckily, many heavy applications allow sd card as their data storage location.
original state: portable storage
Firefox cannot be moved to sd card
format as internal
Strange, during android 5 -> android 6 migration one app is still installed on sd card. During formatting it was removed.
sd card assumed to be too slow, but this is only a warning, one can continue
Automatic moving data to sd card
After conversion, there are still 2 storage partitions
SD card is not visible in file manager anymore
Now I can move Firefox to SD card