I have seen many people purchase data cards from ecom sites. From what I know, data cards basically allow you to use internet on your PC/Laptop by just inserting NORMAL sim card in it and then use it by attaching it to PC/Laptop.
Is it the only benefit? Please correct me if I am wrong. Also, please tell me answers to my following queries:
1) Can we insert any network/type SIM card in the data card? Or we need to do some activation/buy a special SIM card?
2) If we insert any SIM with a certain 3G plan activated in it, will it work?
3) Is it plug and play? Or do we need to install download some softwares and/or set up internet connections manually everytime?
4) What are some other benefits/uses of data cards?
5) Some products also mention Call/SMS support etc. What is it exactly?
Also suggest me some good data cards which you are personally using.