What has replaced cellular cards for the most part for providing laptops internet through a cellular provider?
bluetooth
hotspots
wireless cards
wired ethernet

Wireless cards are replaced cellular cards for the most part for providing laptops internet through a cellular provider.

Explanation:

Bluetooth is a communication device where it is used for transfer contacts and files. It has own limitation in size

Hotspots it is created from mobile internet or simple access point where the end users can transfer files or access the network.

Wireless cards it is a communication device where end users can connect to any access point and internet with login with user id and password. So end-users can transfer the file or access the internet.

Wired Ethernet is another communication where end-users can access the network and transfer files or access the internet.  

answer///quick access toolbar;

it most likely is charging, however when using a hot spot, it drains straight through battery life.