A3356 is the iPad (A16)
Apple lists it as the Wi-Fi + Cellular (China mainland only) model. It isn’t sold in Australia, but it takes the same cases and screen protectors.
For your iPad (A16)
Not sure what’s wrong with it? Diagnostics at Riverwood Plaza are free.
Software updates
Gets iPadOS 27
Yes. The iPad (A16) runs iPadOS 27, Apple’s current version.
Check it yourself
Where to find the model number.
Settings → General → About, then tap the Model Number line once to switch from the part number to the A number. On most iPads it’s also printed on the back. Got a different number? Look it up here.
Cracked iPad (A16)? Bring it in.
iPad screens, batteries and charging ports at Riverwood Plaza. Free diagnostic, no obligation.