Third Generation iPad LTE

12.52 Ponsel

IPad last week introduced a third generation. This is the first Apple product which is used to support 4G LTE, giving the tablet super-fast wireless access on both AT&T and Verizon Wireless, even when Wi-Fi isn't available. This is due since the device will be able to roam on 3G networks that use the HSPA and HSPA+ standards. And the iPad will still be able to access Wi-Fi. But the lack of 4G LTE roaming on the device highlights a fundamental issue with all LTE devices.
The GSMA's Wireless Intelligence Service predicts that at least 38 different radio frequency combinations may be used in LTE deployments in the next few years. For example, operators in the U.S. are mostly using 700MHz spectrum to build their 4G LTE networks. But in parts of Europe operators are using 2.6 GHz. China is using 2.5 GHz. Japan is using 2.1 GHz. And many markets in Southeast Asia are using 1.8 GHz.
And devices built for one band of radio frequency won't work on a network that uses a different band. In other words a Verizon 4G LTE smartphone that operates on 700MHz spectrum in the U.S. will not operate on TeliaSonera's 4G LTE network in Sweden, which uses spectrum in the 1800MHz band.