1 - depends on the make of the UMTS module, some you can connect with a serial console and send an AT command. Easier to take sim out and put In a phone to read number.
2 - yes once you have the number. Data sims work fine on sure signal
3 - yes if you have the UMTS module vendors software
4 - only if the laptop maker designed in a connector for this. I've not seen on dell or Lenovo.
5 - unlikely most data devices don't support voice. Your sim probably a data only one too.
The module inside the laptop is the same an express card or USB connected dongle and is just connected to the PCI or USB bus inside. Making it more convenient.
James BT Infinity 2
- 19/9/2012 - Sold 42/6, Sync @ 51/9.8 @ 470m
19/5/2014 - ordered PlusNet Unlimited Fibre - activation 3rd June
15 years broadband (1999 ntl:cable trial) - Asus RT-AC68U with HG612 - BT speed