Doesn't CDMA suck compared to GSM? I remember hearing this somewhere but perhaps it's not true?
Okay, i dont want to start any sort of GSM vs. CDMA flame war, but you actually have it backwards.
CDMA has always been lightyears ahead of GSM as far as speed, capacity, reliability, etc. Almost a full generation gap in terms of actual technology and deployment.
CDMA CSD: 14.4k (vs GSM's 9.6k)
CDMA 1xRTT: 100Kbps-144Kbps symetrical (deployed during GPRS popularity)
CDMA EVDO: 600Kbps-1Mbps, 144Kbps up (deployed during EDGE popularity)
CDMA EVDO Rev A: 1Mbps-3Mbps, 600-1MBps up (deployed currently during EDGE/UMTS)
CDMA EVDO Rev B: 8-10Mbps down, 1-3Mbps up (deployed 2008)
There are a ton of different GSM technologies out there that were being developed to keep up with CDMA, but you will find that most of that stuff was either in the lab or deployed in 2-3 cities tops. at&t's UMTS deployment has been a big let down in terms of performance and actual UMTS cards actually installed at the towers.
CDMA also has about 3-5x more voice capacity, nearly all hand offs are soft -- mainly because multiple towers are able to pick up pieces of your signal and put it back togther as a whole...vice versa on the handset. no handoff mishaps like all the TDMA voice services i have ever used. All the systems are backwards compatible. higher call quality .... its actually rated better than GSM in technical journals, its not subjective.
CDMA is a great technology, but only niche in the americas and some of asia. European carriers actually wanted to deploy EVDO at one time (mainly because UMTS hardware didnt exist when EVDO was deployed), but the laws mandate GSM systems.
Of all the features, i like the simple fact that CDMA doesnt buzz the hell out of every speaker within a mile radius. I love my iPhone, and am "putting up" with EDGE..but man, it gets annoying sometimes.
CDMA is not good because:
1) not a truly global system
2) Its version of the SIM is almost never implemented..which:
3) the system very closed
4) requires usage of special chipsets with heavy royalties (qualcomm locked up a lot of UMTS IP the same way, so a moot point)
who cares about CDMA this day?
oh wait....some verizon cellphone don't even have a SIM card.
oh shoot...whut a product with 90's technology.
They just try to get people to use their so call "special" CDMA network with EVDO expensive useless wireless connection.
EVDO is a hell of a lot cheaper than even other GSM systems in the united states. It completely blows away europe and the rest of the world. $10-$15 Unlimited EVDO vs. metered EDGE/UMTS...hmmm...
EVDO is also lightyears ahead of even the "best" UMTS technologies. EVDO actually works in the real world...meanwhile...UMTS, due to CDMA patent dodging mainly, is not able to hold up to any claims in the real world. This is mainly because the most important thing is very high rate/resolution power control, a patent that GSM decided to dodge, and thus, creates an inferior system.
Yeah, your right, CDMA is from 1992...and boy does it kick UMTS's ass.
anyway..enough of that....im just happy Verizon is going to own up their network. There are some very interesting OEM modules id like to connect to their EVDO network with.