A:AnswerI have AT&T and they will not put the internet on my new tablet. When my tablet died, AT&T insisted that I purchase one of 3 that they had and none of them were good quality and twice the price. So I use the hotspot on my phone. Works well.
A:AnswerNo the screen is 1444 also known as 2k or WQHD. Its still an excellent viewing screen and looks great for games and even movies being watched in 4k.
A:AnswerI believe you need a Samsung Galaxy Phone with cell service to make and receive calls with it. I have not been able to do so with my Android phone.
A:AnswerBluetooth mouse, yes. With a compatible Samsung phone, calls and texts can be made on the tablet. Be careful, as some carriers block this capability on their devices (Verizon).
A:AnswerNot built in.
You could try https://www.amazon.com/Nillkin-Lightning-Wireless-Charger-Receiver/dp/B087P3T5BF/ref=sr_1_6?crid=3056AWDSX2GO2&dchild=1&keywords=qi%2Btablet&qid=1596001873&s=electronics&sprefix=Qi%2Btablet%2Celectronics%2C178&sr=1-6&th=1
I believe the Samsung is a type C USB. They offer it in C as well as Lighting, order the correct one.
You going to need those 2,000 maH, also the charger has to be QC 3.0, including, especially the wall plug, less will not produce the maH. Make sure the charger pad is Qi compliant, not works with, compatible.
I have not tried this, so try at own risk.
Make sure the Samsung can balance on a pad with the receiver probably placed, or can sit correct,y.
Remember you need to be able to see the charger light(s).
If it works out, post your results.