Re: [Fed-Talk] Re: Verizon iPhone
Re: [Fed-Talk] Re: Verizon iPhone
- Subject: Re: [Fed-Talk] Re: Verizon iPhone
- From: "Blumenthal, Uri - 0668 - MITLL" <email@hidden>
- Date: Tue, 3 Aug 2010 10:02:22 -0400
- Acceptlanguage: en-US
- Thread-topic: [Fed-Talk] Re: Verizon iPhone
Title: Re: [Fed-Talk] Re: Verizon iPhone
Also, do people remember that UMTS is CDMA-based? :)
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Regards,
Uri
From: Kim, Andy (Gregg) [mailto:email@hidden]
Sent: Tuesday, August 03, 2010 09:59 AM
To: Wm. Cerniuk <email@hidden>; email@hidden <email@hidden>; Kim, Andy (Gregg) <email@hidden>
Subject: Re: [Fed-Talk] Re: Verizon iPhone
Of course, all of my office Blackberry the removable SIM (Subscriber Identity Module) card included, that is same for overseas coverage Blackberry: Verizon & AT & T.
One good thing about AT &T (GSM) Blackberry, because of the removable SIM card, AT&T Blackberry are easier to upgrade, including with BES Server, and the Blackberry swap doesn’t involve contacting the carrier to make a switch.
The one advantage of Verizon CDMA EV-DO based Blackberry most widely used with 3G technologies (i.e. High-Speed Data outside of WI-FI use.) The Verizon ‘s Blackberry (overseas coverage) to combine CDMA technology with GSM for global roaming: CDMA, dual Band GSM, Quad Band GSM and 3G.
According to Verizon, “Verizon Wireless covers more than 220 voice and over 200 data countries, more than 115 with 3G speeds – check our Global Phone, and Global Email, or Global Access tabs for details on specific destinations offered. “
http://b2b.vzw.com/international/Global_Travel/index.html
I, for one, that I have carried both AT&T and Verizon Blackberry for overseas travel, and U.S. Senate charged more for AT & T Blackberry with less amount use than Verizon Blackberry for both Data & voice.
Regards,
Andy
On 8/2/10 5:35 PM, "Wm. Cerniuk" <email@hidden> wrote:
Does your bb have a sim card?
Because of very limited CDMA overseas compatible with US carriers, Verizon and Sprint have taken to adding GSM radios in their phones, especially the BBs which were the main complaint for overseas travelers. They call these "Global Phones".
http://b2b.vzw.com/international/Global_Phone/
Traveling in Europe (England, Ireland, Spain, France, Italy, etc), SWA (Iraq, Iran, Afganistan, etc) and most other regions, only Verizon "Global Phones" work in most cases but very small pockets of CDMA exist sometimes (green)
Example : http://b2b.vzw.com/international/Global_Phone/Middle_East/Afghanistan.html
Verizon CDMA OCONUS Coverage:
http://b2b.vzw.com/international/Roaming/rates_coverage.html
Cruse ships, having the same complaint from non-business travelers have taken to installing CDMA cell towers onboard and providing CDMA when 12 miles out of port. Any closer they turn their systems off to due to coastal rules. When in port in the Atlantic, like Spain, CDMA is off and only GSM from shore is available.
http://travel.latimes.com/articles/la-tr-insider5nov05
Interestingly, China, one of the few overseas countries to have have a large CDMA infrastructure but uses a variant of CDMA. I have heard it is not compatible with US CDMA but I have not researched.
All that not withstanding, CDMA cannot handle the demand of modern data hungry customers. CDMA for example cannot handle simple voice and data service simultaneously (talk on phone, search email or web to discuss issue). While HSDPA on GSM runs as high as 7.2Mb without hardware modification as "3G", Sprint has had to adopt WiMax as their 4G strategy and it is frequently slower than AT&T's common 1.9Mb/s 3G base service. 4G as compared to CDMA 3G is an improvement but it is not up to GSM 3G capability. (I have both). I have had a measured 2.8Mb/s while using an iPhone tethered to a Mac. I cannot get anywhere near that with Sprint 4G service regardless of how much they brag. Verizon rarely gets up to 1.5Mb/s on 3G on the nice white USB units.
Ref:
"FiveSpot," a "global ready" mobile WiFi hotspot (GSM radio added for overseas)
http://www.engadget.com/2010/07/19/verizon-fivespot-cdma-gsm-mobile-wifi-hotspot-leaks-out/
R / Wm.
On Jul 31, 2010, at 5:34, "Kim, Andy (Gregg)" <email@hidden> wrote:
The CDMA Smartphone / BB is NOT limited to US only, My staff and I have travel to overseas w/ Verizon BB and AT&T Bold BB that CDMA has a better international coverage. Moreover my AT&T 9700 Blackberry is running EDGE speed of connection on most of time at U.S. Capitol.
Regards,
Andy
-----Original Message-----
From: fed-talk-bounces+andy_kim=email@hidden [mailto:fed-talk-bounces+andy_kim=email@hidden] On Behalf Of Wm. Cerniuk
Sent: Friday, July 30, 2010 10:13 PM
To: Villano, Paul Mr CIV USA TRADOC
Cc: email@hidden
Subject: [Fed-Talk] Re: Verizon iPhone
The issue with Verizon is largely the use of closed technology. A verizon phone can only ever be a verizon phone. Sprint, same.
GSM phones are more like computers and Ethernet in that they are an agreed upon standard not particular to any carrier. Apple, Sony, Nokia, etc makes one phone and it covers the world with GSM. Verizon and sprint CDMA phones are only good in the US.
V/R,
Wm.
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