Ask Google. Restrictions in SD-card usage are a feature of the Android security model.
Though spoilers: Google will tell you to ask the app developer - as their security model provides ways in which apps can request access to (part of) the SD card.
@marky did you get any kind of message when you inserted the SD card for the first time? Something like “Do you want to use this card as an extended internal memory or as external SD?” If so, what did you choose?
And what filemanager do you use? There are probably some out there which don’t work with SD cards.
Was the SD card new or maybe already formatted in a windows format (NTFS) with data on it?
In addition to the points in the post above, one of the Motorola admins has posted a useful overview of SD card options in Android 6:
What configuration is most sensible depends very much on what you actually want to do (which isn’t clear from your post). In addition to the table in the link above, note that access to portable SD cards for media storage needs to be configured app-by-app, and needs to be supported by the app in question. I’m not sure whether the default camera app has this option.
If you want to contact Fairphone, you’ll need to file a support request. They appear to be busy, so it may take a couple of weeks before you get a response.
Fairphone comes with standard Android 6.0, adding hardly any “FP-flavour”.
That’s part of the fair deal; not forcing customers to some non-free software, instead letting them chose what they need and are willing to install.
So, you are not complaining about Fairphone at all, but about Android.
If you are in fact complaining about unusal SD-card behaviour:
What about the questions posted by @Stanzi?
Have you been asked how to handle the SD-card (internal storage/mobile card)?
What did you do?
There are quite a lot of different SD-Cards out there; some of them do cause trouble with some devices.
Take a look at this thread:
the sd is an new one.
its a : scan disk ultra 64 gb sdxl uhs-1
i formatted it has an external sd on the phone.
I installed assus filemanager at the phone.
Assus recognize the sd card.
The internal browser from the fairephone recognize the sd cad also.
I can copy files from internal to external card with both browsers.
So the card is recognized, i think
when a take a picture with open camera on the sd card and then i want to download to my pc give problems.
i connect the pfone with usb to my pc. I activate usb-mtp for downloading.
i can see internal ad external card from the phone at the pc
But the picture taken with open camera are 0 bytes.
On the phone they have there originally bytes.
i shutdown the phone
I took out te sd card and put it directly in te pc. No problem now. The picture’s and there original
size are there.
I put the card bac in de phone. same thing.
I did different test and found out that
shutdown the phone
take out the card
start the phone without sd card.
shutdown the phone
put the sd card in
start the phone
connect to the pc and now the picture’s have there original size.
that’s is not workable
so what alo works
menu : settings\storage and usb
click at scan disk-sd cart flesh pointing to above
message : scan disk has been ejected
click at scandisk : message ; sd card link
click : link
Connect the phone with usb with the pc and the pictures have there original size
Yes, SD card support in Android is a mess, ever has been and basically changes with every version. But there is nothing Fairphone can do about it. They really deserve a lot of criticism for many things, but this is not one of them. That’s like bashing a laptop manufacturer for some Windows quirks.
On topic: As Johannes pointed out, the most suitable formatting method depends on your requirements. If you want maximum compatibility with apps, you should adopt the SD card (format it as internal storage) and migrate your data to it. That’s the configuration I’ve been using since the Android 6 upgrade. I’ve never had issues with any app not being able to use it ever since. That includes the stock camera.