How to increase storage space on a Samsung J3(2016) phone

[Anonymous]

My phone keeps telling me that I'm running out of storage space.  I run very few apps so I find this very annoying.  O2 sold me an SD card to solve this problem but I have realised that the device is not using the SD card as it is still empty and the device does not appear to recognise the SD card.  How do I solve this?

Also, the phone is running on Android 5.1.1 (Lollipop?) which I'm told is very out of date even though I've only had the phone a few months.  How do I update this?

Any help appreciated, thanks

[MI5]

Updates depend on what is pushed out by the manufacturer so there may not be an update for that device.
If you can type *#1234# and let me know the csc I can check.
The sd card shone recognised automatically and be available for photos and videos storage etc so if not showing in device manage it could be faulty.

[Anonymous]

Hi, thank you for your response.  I'm afraid I'm a bit of a dinosaur and a technophobe so I don't know where to type in the code you gave me so I can let you know the csc (don't know what that is either....)!

[MI5]

Just dial it into the phone as if you were calling a number and then press the call key.
The codes will then appear on screen.

[Anonymous]

CSC:J320FN02U0AQI1

Thanks

[MI5 · Accepted solution]

Your firmware is up to date:

This is the latest......

[gmarkj]

Out of interest @MI5 where can you check that?
And is that only for certain brands?