Almost all major cellphones operators and telecome companies offerr Internet access through a small hardware device known as data card.these are either USB dongles or PCMCIA/ExpressCard Devices which fit into your's laptops expansion slot.these devices are actually miniature mobile phones 2G/3G Sim cards or equivalent connection mechanisms,and connect to the service provider just like GPRS/EDGE-enabled cellphone.The providers offer special plans for data transfer rather than voice/SMS and other types of usage.Reliance,Airtel,Tata,Idea and many others offer coverage across the conty.Speed are usually in the range of 115 Kbps-3.1 Mbps.
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