Wow nice. Too bad I can't get a networking degree anymore, long story, oh well.
But I really love learning about this stuff, and this time I love beeing
wrong, as I get to learn somethingn new. Lol!
Everyone be blessed and have a happy Saturday.
On Sep 10, 2016, at 6:11 AM, Scott Granados <scott@xxxxxxxxxxxxxxxx> wrote:
Well, Verizon has had LTE for a long time now. LTE is an extension of GSM.
Remember that back in 2012 / earlier that was LTE0 where you had data only
and the voice was still on CDMA / 1x. Remember back when you couldn’t talk
and browse at the same time for example.
I got to VZ around 2013 and we worked on Voice over LTE as well as moving
from the 700 MHZ band to much higher frequencies in the AWS band for faster
speeds. That switching was called XLTE. So by the time I left VZ they had
completed VOLTE and had a fully baked 4G solution separate from CDMA.
Now, LTE advanced was released, we just started playing with that in the lab
before I left. That’s where you bond channels together for more speed. This
is now fully baked and available in 461 cities around the country. Three and
4 way MIMO are next and will be rolled out over the next year.
T-Mobile also has a very advanced network, AT&T is catching up (like they
always do) and Sprint well not so much.
On Sep 9, 2016, at 12:50 PM, Sarah Alawami <marrie12@xxxxxxxxx
<mailto:marrie12@xxxxxxxxx>> wrote:
Wo! When did VZ switch to a HSM network? This is actually news to me as my
friend who is a VZ subscriber thought that they were CDMA as well.
Interesting stuff. I really love this aspect of computers as it's changing
all the time. Who knows where it will go. Now let's hope sprint can just go
die.
On Sep 9, 2016, at 6:41 AM, Scott Granados <scott@xxxxxxxxxxxxxxxx
<mailto:scott@xxxxxxxxxxxxxxxx>> wrote:
Sarah, your dead wrong.
Remember, I built some of these networks.;)
The 6 and the 6s / 6s and 6s+ have a qualcomm radio that speaks everything,
CDMA, EVDO, LTE, HSPA/ HUPSA, /+, GPRS / Edge, 1X and so forth.
The new Intel chips speak GSM protocols only so no WCDMA, CDMA, EVDO or 1X.
You’re also dead wrong, Verizon is now a GSM network. There is some old
CDMA still activated for legacy customers but 40% of the traffic has been
entirely migrated over to LTE including voice and LTE is a long term
evolution of the GSM protocol. Verizon now fully uses SIM modules and such.
Sprint has a full LTE network available in some places but still very
dependent on CDMA / EVDO so you would need a qualcomm based radio to
connect because qualcomm owns the rights to CDMA. Intel will be providing
CDMA capability in 2018 as they bought a chip provider with CDMA rights but
by 2018 there will be no need in the US. (with the exception of Sprint who
is a failing company with a failed network roll out) By 2018 we’ll be
talking about 5G anyway and hopefully someone will have bought Sprint by
them and put them out of their misery or rather bought them from soft bank
as soft bank is just continuing the bad practices from before. That
spectrum could be better used by 1 of the other 3 or maybe a European
carrier could move in to the US market. (aside from the one that started
T-Mobile)
On Sep 9, 2016, at 12:15 AM, Sarah Alawami <marrie12@xxxxxxxxx
<mailto:marrie12@xxxxxxxxx>> wrote:
Actually tmobile and at&t are gsm. Tmobile actually told me I believe that
my 6 will only work on GSM networks and for me even wiht sprint that was
the case. They locked the phone to sprint and you were not getting it
unlocked to work on VZ. VZ was the only carrier to make their phones world
compliant. I had a friend who tried and got this to work. Their phones
were true world phones. By the way VZ and sprint are both in the CDMA
spectrum. So, yeah for me this is not big shock. I kind of had the feeling
this would happen since about 2012 or so.
On Sep 8, 2016, at 8:53 PM, Mary Otten <motten53@xxxxxxxxx
<mailto:motten53@xxxxxxxxx>> wrote:
If you read the article, you will know that it has not always been this
way. The 6S and the 6S plus, no matter which carrier you purchase them
from, would work on CDMA or GSM. Since most of the rest of the world is
on GSM, it may not be a big deal. But if you buy one of the T-Mobile or
AT&T phones and, a year from now, you decide you would like to move to
Verizon, you will be out of luck. That is not true if you have a 6S or 6S
plus.
Mary
Sent from my iPhone
On Sep 8, 2016, at 8:43 PM, Sarah Alawami <marrie12@xxxxxxxxx
<mailto:marrie12@xxxxxxxxx>> wrote:
I believe it always has ben this way. So for me this is not shockign
news at all.
Blessings and happy Thursday
On Sep 8, 2016, at 6:30 PM, Mary Otten <motten53@xxxxxxxxx
<mailto:motten53@xxxxxxxxx>> wrote:
iPhone 7 Models From AT&T and T-Mobile Do Not Support CDMA Networks
MacRumors: Mac News and Rumors / Joe Rossignol
Choosing which iPhone model to purchase this year should be more
carefully considered, as both AT&T and T-Mobile models of the iPhone 7
<http://www.macrumors.com/roundup/iphone-7/> and iPhone 7 Plus do not
support CDMA networks such as Verizon and Sprint in the United States.
Apple confirmed the matter in fine print in the iPhone 7 tech specs
<http://www.apple.com/iphone-7/specs/> and on its LTE
<http://www.apple.com/iphone/LTE/> page.
A customer that purchases an iPhone 7 from Apple's website and selects
AT&T as their carrier, for example, would be unable to later use the
smartphone on Verizon, Sprint, or any other CDMA network, even if the
device is unlocked. By comparison, all iPhone 6s
<http://www.macrumors.com/roundup/iphone-6s/> and iPhone 6s Plus models
worked on both GSM and CDMA networks.
A customer that purchases an iPhone 7 from Apple's website and selects
Verizon as their carrier, on the other hand, would also be able to use
the smartphone on AT&T, T-Mobile, Sprint, or any other GSM or CDMA
network.
It was previously reported that Apple would switch to Intel modems
<http://www.macrumors.com/2015/10/16/intel-lte-modem-chip-iphone-7/>
for select iPhone 7 and iPhone 7 Plus models, including AT&T models
<http://www.macrumors.com/2016/06/10/intel-qualcomm-modem-split-iphone-7/>,
and Intel modems do not support the CDMA standard in the United
States. That is likely the reason why AT&T and T-Mobile models are
limited to GSM networks.
Only Verizon and Sprint models support both GSM and CDMA networks
The same report said Qualcomm would supply modems for the remaining
iPhone 7 and iPhone 7 Plus units, including Verizon and Chinese models
<http://www.macrumors.com/2016/06/10/intel-qualcomm-modem-split-iphone-7/>,
and this appears to be the case. Qualcomm modems support both the GSM
and CDMA standard, which explains why the iPhone 7 from Verizon and
Sprint will work on all carriers.
Qualcomm, which holds patents for WCDMA and CDMA2000 standards, is the
main CDMA modem supplier in the United States. The company developed
the first CDMA-based cellular base station in 1990, and since then it
has licensed its technology to companies like Apple in return for
royalty payments.
Until this year, Qualcomm was Apple's exclusive supplier of modems for
LTE and Wi-Fi connectivity, which explains why the iPhone 6s and
previous generations supported both GSM and CDMA networks regardless of
carrier. But with Intel entering the mix, choosing which iPhone to
purchase is now more meaningful.
All iPhone 6s and iPhone 6s Plus models supported both GSM and CDMA
networks
The lack of CDMA support in iPhones with Intel modems may be short
lived, fortunately, as Intel acquired CDMA assets
<http://www.fiercewireless.com/wireless/intel-continues-to-pare-mobile-losses-buys-cdma-modem-assets-from-via-telecom>
from VIA Telecom in 2015. It is believed that this acquisition could
pave the way for Intel to release its first LTE modem with both GSM and
CDMA support as early as 2017 or 2018.
Ultimately, the most obvious choice should be to purchase a Verizon or
Sprint model, even if you are an AT&T or T-Mobile customer, especially
when considering resale value. However, some customers may have
difficulty purchasing from another carrier, depending on their current
status with their existing carrier.
Apple should also release an unlocked SIM-free model in the U.S.,
likely based on the Verizon/Sprint model, in a few weeks based on past
launches.
Related Roundup: iPhone 7 <http://www.macrumors.com/roundup/iphone-7/>
Tags: Intel <http://www.macrumors.com/roundup/intel/>, Sprint
<http://www.macrumors.com/roundup/sprint/>, T-Mobile
<http://www.macrumors.com/roundup/t-mobile/>, AT&T
<http://www.macrumors.com/roundup/att/>, Verizon
<http://www.macrumors.com/roundup/verizon/>, Qualcomm
<http://www.macrumors.com/roundup/qualcomm/>
Discuss this article
<http://forums.macrumors.com/threads/att-and-tmobile-iphone-7-models-lack-cdma.1992985/>
in our forums
<http://feeds.macrumors.com/~ff/MacRumors-Front?a=ojdG2Ez3hfc:mkr4un4YuMw:yIl2AUoC8zA>
<http://feeds.macrumors.com/~ff/MacRumors-Front?a=ojdG2Ez3hfc:mkr4un4YuMw:6W8y8wAjSf4>
<http://feeds.macrumors.com/~ff/MacRumors-Front?a=ojdG2Ez3hfc:mkr4un4YuMw:qj6IDK7rITs>
Original Article:
http://www.macrumors.com/2016/09/08/att-and-tmobile-iphone-7-models-lack-cdma/
<http://www.macrumors.com/2016/09/08/att-and-tmobile-iphone-7-models-lack-cdma/>
Sent from my iPhone
