NDEFformatable returning PlatformException(io_exception, null, null, null)

[Adithyan2295]

I have been trying to write to a new card .. ndef.write() also returns the same error..If the card is not empty I can overwrite. Writing to a new card is the issue for me.

Running on Android 13 : Samsung Galaxy Tab Active 3

[carki001]

Is it writable?

[hebaothman]

Any news about this issue?

[pranil-iottive]

I'm also getting the same issue, with the same card sometimes the package gives this error PlatformException(io_exception, null, null, null) and after a few attempts, I'm getting a small detail with this message PlatformException(io_exception, Tag is not ndef, null, null)

Device Name. : Oneplus A6000 Os Version: Android 11

[Adithyan2295]

@hebaothman @carki001 @pranil-iottive The issue I was facing was that ,Some cards have NDEF formattable technology which means when the card is empty the value is basically null.So some devices does not recognize this format.Once we write to the card the technology changes to just NDEF which we can overwrite however we like. My solution was to change the card that has by default NDEF technology which by default have a empty string instead of null when formatted or while writing for the first time.

This card fixed the issue for me: NTAG216 NFC Tags Cards. Search for NFC cards NTAG 213,215,216 my understanding is some devices does not accept NDEF formattable technology causing the issue when card is empty.

[philitell]

Some tags use ndefformatable - this means that such tags can be formatted to ndef. nfc-manager fails to do so for some tags. Tags that are working: I'm using NTAG 213,215,216 tags. This tags can be formatted from ndefformatable to ndef with nfc-manager.

Tags that are failing: When i'm using Mifare Desfire EV3 tags (which are also ndefformatable) i'm getting PlatformException(io_exception, null, null, null) on await ndefFormatableTag.format(message);