Willmeister said:
The difference between North America and Europe and Asia is that you can use the same phone, and get the same digital service no matter where you go. From Turkey to Portugal, your phone will work in digital mode, which is more than you can say for US service. I know this because I know a lot of people who travel on business. You go into parts of the USA and your CDMA or TDMA phone reverts to crappy analog service, if it gets to work at all.
Balderdash. I am a frequent business traveler and I happen to work for company that sells mobile technology. I've been a SprintPCS customer for years and have rarely if ever had coverage problems in the US. Phone worked fine in Canada too, in BC and Vancouver. I digitally roamed even while in the mountains. My phone also digitally roamed in Beijing, Shanghai, and Seoul.
If you want to see spotty coverage, try T-Mobile GSM in the US.
It is true that it won't do that in Europe, since in Europe, you don't have a choice between network technology. You're stuck with TDMA GSM, period. It is also true that you can roam more with TDMA than with CDMA, but so what? As I explained, the real issue with roaming, it agreements on tariffs, billing, and authentication, NOT the air interface.
GSM is a stack of protocols, and it will run just fine on top of CDMA (most likely W-CDMA) if the ITU would stop screwing around with TDMA EDGE, something that will be thoroughly obsolete by the time it is deployed, and move on to CDMA or OFDM CDMA as the air interface for GSM.
The only reason TDMA still exists is because it's cheap to deploy and because it's a legacy system with so many users. But it is not the better wireless technology, in terms of spectral efficiency, and it is not as flexible. CDMA is more packet-like, so varying datarates are supported easier. TDMA has a much harder time accomodating high speed data plus voice calls.
Looks like 3G isn't picking up at all. Even the Japanese public hasn't really adopted it. And pretty much if Japan doesn't, no one else does.
Well, that's not surprising, since the first 3G service was only launched in October of 2001, initial handsets were buggy, bulky, and service cost an arm in a leg. DoCoMo has now broken the 1 million subscriber mark for 3g, and growth is climbing due to the release of new handsets.
SprintPCS faces the same hurdles. The launch of SprintPCS "vision" sucked. The first batch of phones were complete crap, 1xRTT sucks, and the promised speeds (128kps) didn't materialize close to reality until recently (I can regular hit 70kbps on my PC-Card)
SprintPCS needs better handsets and finish their 1xEV-DO support. Once they do that, ATT's inroads with GSM will start to slide. Some of the new CDMA handsets coming out this year are much better. Samsung's new smartphones rock, will have SDIO slots (can add a Wi-Fi card for 802.11b network access if near an access point), or use CDMA 1xEV.
I own two phones right now. A personal SprintPCS phone, plus, every 2 weeks or so, I get a new handset from work. I've been beta testing the Nokia 6600 for the past 2 months. When I travel to Europe for meetings, I take a GSM phone. If I travel in the US or Asia, I take both.