Disable "No SIM error" message.

[Zombies Aaargh]

I've set up an old Lumia 640 as an IOT device, but each time it's switched on I get an error message about it not having a SIM card (Because it doesn't).

Is there any way to disable this message?

 

[fissssssi]

Me too, well, using it as a Zune, but did you ever figure this out?

 

[covfefe]

Put a sim card in it.

 

[Starboy21]

Flight mode ???