Answer #1

What is 4G?
It’s the fourth and latest generation technology for data access over cellular networks. It’s faster and can give networks more capacity than the 3G networks still on most phones. There’s a technical definition, set by a United Nations agency in Europe, and a marketing definition, which is looser, but more relevant to most consumers.

Who needs 4G?
It’s mostly for people with smartphones, tablets and laptops who often need fast data speeds for Web browsing, app use and email when they’re out of the range of Wi-Fi networks. It can give you the same or greater data speeds as home or office Wi-Fi when you’re in a taxi. In hotels and airports, it’s often faster than public Wi-Fi networks.
What are these other versions of 4G?
Sprint uses a technology called WiMax. T-Mobile and AT&T deployed a technology called HSPA+, a faster version of 3G that they relabeled as 4G, and which many technical critics regard as a “faux 4G.” Sprint will begin switching to LTE later this year, and T-Mobile in 2013.
How fast is 4G?
Claims vary and performance depends upon the type of device, location, and time. In my tests, 4G phones, tablets and data modems for laptops typically deliver from three to 20 times the download speeds of 3G devices. The speed king is LTE. The LTE devices I’ve used have typically averaged download speeds of between 10 and 20 megabits per second, with frequent instances of over 30 megabits per second. The other forms of 4G have generally produced download speeds well under 10 mbps in my tests. But all of these are better than 3G, which in my tests on all networks and many devices, averages download speeds of under 2 mbps.

Answered By: MsMoon [36 ]