Yes, Galaxy Tab A 10.1 2019 support SIM card. The Tab comes with single SIM support which will be capable of supporting all the avaiable4G, 3G and 2G bands in India.
For complete specifications check Galaxy TAB A 10.1 2019
For the connectivity, it has Wi-Fi Direct, Mobile Hotspot, Bluetooth, GPS with A-GPS and USB Type-C.
It also supports a 4G network connection.
In the meantime, do not forget to find all the detailed specifications and other latest updates about Samsung Galaxy Tab A 10.1.2019 here.
Samsung Galaxy Tab A 10.1 2019 comes with a TFT display with a pixel density of 224 PPI. It has a screen resolution of 1,200 x 1,920 pixels which makes the viewing better. All these features are packed in a 10.1-inch screen.
For full product specifications check: Galaxy TAB A
Yes, the Samsung Galaxy Tab A 10.1 2019 LTE does support the Voice and Video calling as it supports SIM connectivity and has a single SIM of 4G slot.
The Sim is nano-sized and supports many 4G bands.
Check Full Device Specifications Samsung Galaxy Tab A 10.1 2019 LTE