A:AnswerYes it can do both i have my hooked up via wifi but there is a spot for a sim card and it does ask you when you set it wether you want to use wifi or sim card
A:AnswerThe Tab A9+ does not natively support Power over Ethernet (PoE). So a true PoE injector won’t work directly unless paired with a specialized adapter check out LAVA products.
https://lavalink.com/lavasimulcharge/products/
Some users report success using multi-function USB-C hubs with Ethernet and PD passthrough, but compatibility can vary. Look for hubs that explicitly mention Android or Samsung tablet support.