Galaxy S7 and LG G5 won't treat the memory card as internal storage, despite Marshmallow
Now, here comes the surprise - both the Galaxy S7 and LG G5 don't support this Adoptable Storage feature, despite shipping with Marshmallow on board. Thus, they'll treat the microSD card as a separate entity, instead of lumping it together with the internal memory in the storage menu. Here is Samsung's argumentation behind this decision, and we'd wager to say LG could have meant something similar as well:
Samsung decided not to use the Android Marshmallow “adoptable storage” model. We believe that our users want a microSD card to transfer files between their phone and other devices (laptop, tablet, etc), especially the photos and videos they shoot with the camera.
With adoptable storage, first of all the card may be erased the first time it is inserted into the device. This behavior may be unexpected by many users and we don’t want our users to lose their files. Second, once Marshmallow starts using a card for adoptable storage, it cannot be read by other devices, so it loses this ability to be used for file transfer. Adoptable Storage is also primarily targeted towards emerging markets where devices with only 4-8GB of onboard storage are common. We think that our model of using microSD for mass storage is more in-line with our owner’s desires and expectations for how microSD should behave.
With adoptable storage, first of all the card may be erased the first time it is inserted into the device. This behavior may be unexpected by many users and we don’t want our users to lose their files. Second, once Marshmallow starts using a card for adoptable storage, it cannot be read by other devices, so it loses this ability to be used for file transfer. Adoptable Storage is also primarily targeted towards emerging markets where devices with only 4-8GB of onboard storage are common. We think that our model of using microSD for mass storage is more in-line with our owner’s desires and expectations for how microSD should behave.
After all, Samsung also decided that it is too early to force the obscure USB Type-C connector on the potentially millions of Galaxy S7 and S7 edge buyers, assuming that the negatives outweigh the advantages, at least at this point in time, so it's not surprising that it is not taking all of the options that Google provided with Marshmallow at face value either, what do you think?
source: AA
Things that are NOT allowed: