4G = LTE, HSPA+, and WiMax. Read some Wiki on it, HSPA+ might not be as fast as LTE at the moment, but maybe not for long. Don't underestimate it either, its still fast.
None support 4G. You might have 4G available in your area but blackberry doesn't use 4G at all. I'm glad I don't have 4G around me. Drains battery wayy too fast. Which is a huge issue with these 99xx phones
Currently, advertised 4G is really just late-stage 3G. The two formats designated by the International Telecommunication Union (ITU) as “true 4G technologies” are:
LTE Advanced (Long Term Evolution Advanced)
WiMAX Release 2
There aren’t any large-scale deployments of either of these. However, their predecessors — LTE and WiMAX — are currently available.
As the wireless companies advertise it, 4G consists of three different technologies:
HSPA+ — This is more like an upgrade to regular 3G. HSPA+ offers faster speeds, but that take advantage of the same infrastructure. The first HSPA+ deployments began in 2008, and are now widely available throughout the world. T-Mobile’s “4G” network in the U.S. is HSPA+. Likewise, the first stage in AT&T’s 4G roll-out includes HSPA+.
LTE — LTE, or Long Term Evolution, doesn’t fully comply with 4G requirements. But it is what most people consider 4G. This is the system being adopted by Verizon, Metro PCS and AT&T in the U.S. Most European carriers have also committed to LTE. It is upgradable to LTE Advanced — so once that kicks in, it will be easy to upgrade an LTE phone into full-on 4G. Verizon started deploying its LTE network in December 2010. AT&T started rolling out 4G LTE in the second half of 2011. AT&T has a HSPA+ deployment, which it will use as a backup to LTE. Both AT&T and Verizon expect to have the bulk of their LTE deployments in place by the end of 2013
My wife and I have 9900's and both say 4G by the signal meter. I had a 9810 for a day that read HSPA+. Same SIM card and network.
Why would the 9810 indicate HSPA+? Does that mean anything?
H+, HSPA+ are basically 3.5G. Until carriers have a very good ping (120 ms or less) and unthrottled speeds (in Kilo/Mega bytes, 256-768 mB/s, 64-128 kB/s), it won't really be 4G.
But that's just me. Not too much of an expectation, but I'm waiting patiently.
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