US is mostly covered by 4G/LTE, Europe/UK operators are also in testing phase. Many big operators from Middle East, Africa, Australia are planning to start 4G by 2012 end. I am sure by 2012 end we (in India) could have some significant development in 4G.
I doubt any existing operators could launch 4G due to their investment in 3G, but Reliance (RIL) could surely start service in 4G by 2012 end.
reliance is already scheduled to launch their lte network for a while now. airtel would have to launch their own network too because they have paid for the lte spectrum. it would be available through data cards and modems etc. not very clear about if it would feature mobile support. in any case, you might be able to buy a wireless lte modem and keep it in your backpocket or something like that and use wifi on your smartphone to access the web. 😛
this is similar to how verizon and sprint supported ipad. they offered it with wireless modems connecting to their 3G/4G networks!
I doubt any existing operators could launch 4G due to their investment in 3G, but Reliance (RIL) could surely start service in 4G by 2012 end.
reliance is already scheduled to launch their lte network for a while now. airtel would have to launch their own network too because they have paid for the lte spectrum. it would be available through data cards and modems etc. not very clear about if it would feature mobile support. in any case, you might be able to buy a wireless lte modem and keep it in your backpocket or something like that and use wifi on your smartphone to access the web. 😛
this is similar to how verizon and sprint supported ipad. they offered it with wireless modems connecting to their 3G/4G networks!