Yep, Verizon will be switching to LTE in 2019 and drop CDMA. They still keep it going for older phones. Still, someone needs a CDMA phone to use Verizon, the American network with the greatest coverage.
Kelly On 1/31/18, Christopher Chaltain <chalt...@gmail.com> wrote: > I think it's more the case that Verizon is going to 4G and LTE, which as > the article mentions, is like a more advanced GSM. > > > On 01/31/2018 06:34 PM, Sieghard Weitzel wrote: >> I thought Verizon was also switching to GSM? >> >> -----Original Message----- >> From: viphone@googlegroups.com [mailto:viphone@googlegroups.com] On Behalf >> Of Kelly Pierce >> Sent: Wednesday, January 31, 2018 1:46 PM >> To: viphone@googlegroups.com >> Subject: Re: CDMA vs. GSM Phone Networks: What's the Difference?, Digital >> Trends >> >> IPhones support both GSM and CDMA. I always by my iPhone at the Apple >> store so the unlocked phone supports all networks. If an iPhone is bought >> at AT&T or T-Mobile, the phones only work on GSM networks. I was on the >> T-Mobile networks for years and now use Verizon. T-Mobile is GSM and >> Verizon is CDMA. >> >> Kelly >> >> >> >> On 1/30/18, M. Taylor <mk...@ucla.edu> wrote: >>> CDMA vs. GSM: What's the difference between these cellular standards? >>> By Brendan Hesse - Posted on January 30, 2018 9:04 am >>> >>> If you're in the market for a new smartphone or carrier - or you're >>> simply interested in cell phone networks - you've likely encountered >>> the acronyms CDMA and GSM before. But what are they, and how do they >>> affect your phone? >>> >>> The two cellular standards function in different regions and allow for >>> global communication between individuals, and each converts incoming >>> and outgoing data into radio waves differently. Neither should be a >>> huge factor when buying a cell phone (unlike 4G and LTE), but it's >>> definitely worth knowing your stuff, since not all cell phones are >>> guaranteed to work on both standard. It depends on where you are, what >>> you're looking for, and who you're with. >>> >>> GSM explained >>> >>> The iPhone 7 is a smartphone that typically functions on a GSM network. >>> GSM stands for Global System for Mobile Communication, and unless you >>> live in the United States or Russia, this is probably the technology >>> your phone network uses, given it's the standard system for most of >>> the world. GSM networks use TDMA, which stands for Time Division >>> Multiple Access. TDMA works by assigning time slots to multiple >>> conversation streams, alternating them in sequence and switching >>> between each conversation in very short intervals. During these >>> intervals, phones can transmit their information. >>> In >>> order for the network to know which users are connected to the >>> network, each phone uses a subscriber identification module card, or >>> SIM card. >>> SIM cards are one of the key features of GSM networks. They house your >>> service subscription, network identification, and address book >>> information. >>> The cards are also used to assign time slots to the phone >>> conversation, and moreover, they tell the network what services you >>> have access to. They store your address book, too, along with relative >>> contact information. They can even be used to pass information between >>> phones, if a carrier allows it. >>> >>> CDMA explained >>> >>> The Google Pixel XL is a smartphone that runs on a CDMA network. >>> CDMA - or Code Division Multiple Access - is often found in the U.S >>> and Russia, though GSM is also present in those countries. The Allied >>> Forces developed the technology during World War II, primarily as a >>> method to prevent Nazi forces from jamming radio signals. Unlike GSM, >>> CDMA grants users full access to the entire spectrum of bands, thus >>> allowing more users to connect at any given time. It also encodes each >>> user's individual conversation via a pseudo-randomized digital >>> sequence, meaning the voice data remains protected and filtered so >>> that only those participating in the phone call receive the data. >>> Phones on CDMA networks do not use SIM cards. Instead, each phone is >>> built specifically to work on that carrier's network. What does this >>> mean for consumers? For starters, it means that phones are tied to a >>> carrier and their bands, so if you decide to change providers, you'll >>> have to buy a new phone. >>> >>> Is one better than the other? >>> >>> Huawei's phones very rarely support CDMA Not necessarily. Both are the >>> global standards for cell communication. The major factor affecting >>> call quality is the network itself, not the method it uses to transmit >>> information. Of course, there are some things to keep in mind when it >>> comes time to choose between CDMA and GSM phones. For starters, CDMA >>> phones without SIM slots are tied to their carriers, and cannot be >>> transferred to other networks. A Verizon phone could not be >>> transferred to Sprint's network, for instance, or vice versa. But >>> sometimes it's not as cut and dried as all that - although some >>> Verizon devices do use CDMA, they also have an unlocked SIM slot, so >>> could be unlocked for use on other networks. >>> Sprint is less forthcoming with unlocked SIM slots when its devices do >>> contain one, but you can usually find ways get your carrier to unlock >>> your phone when you're done with them. >>> In contrast, GSM phones are fairly easy to unlock and transfer to >>> other networks. Additionally, third-party manufacturers often sell >>> phones designed for GSM networks, since they don't require access to a >>> specific carrier's bands. GSM phones will even work in countries with >>> compatible GSM networks. >>> CDMA networks allow for a greater number of users, meaning their >>> capacity for communication is greater than that of GSM networks. >>> Moreover, CDMA is the infrastructure on which all 3G networks are >>> based - for both GSM and CDMA carriers. However, there's now a third >>> type of network that is quickly becoming the frontrunner in terms of >>> quality, with many major cell phone companies quickly adopting it. >>> Dubbed LTE for Long-Term Evolution, the technology represents an >>> evolved form of GSM, and uses a similar technology as GSM networks. >>> The new standard boasts enhanced voice quality and functions as the >>> base of high-speed, 4G data networks. In this case, LTE does have an >>> edge over the competition in terms of overall speed and quality. >>> If you're a U.S. customer and wondering what companies use which type >>> of network, the split is right down the middle: AT&T and T-Mobile are >>> GSM carriers, while Verizon and Sprint are CDMA. In truth, picking a >>> new phone or carrier solely based on what standard it adheres to >>> doesn't necessarily matter because the services, features, phones, and >>> service quality a network offers aren't solely dependent on their >>> network infrastructure. So unless you have a particular need for >>> choosing one over the other, go with the carrier that best fits your >>> tastes, needs, and budget. >>> >>> Original Article at: >>> https://www.digitaltrends.com/mobile/cdma-vs-gsm-differences-explained >>> / >>> >>> -- >>> The following information is important for all members of the V iPhone >>> list. >>> >>> If you have any questions or concerns about the running of this list, >>> or if you feel that a member's post is inappropriate, please contact >>> the owners or moderators directly rather than posting on the list >>> itself. >>> >>> Your V iPhone list moderator is Mark Taylor. Mark can be reached at: >>> mk...@ucla.edu. Your list owner is Cara Quinn - you can reach Cara at >>> caraqu...@caraquinn.com >>> >>> The archives for this list can be searched at: >>> http://www.mail-archive.com/viphone@googlegroups.com/ >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "VIPhone" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to viphone+unsubscr...@googlegroups.com. >>> To post to this group, send email to viphone@googlegroups.com. >>> Visit this group at https://groups.google.com/group/viphone. >>> For more options, visit https://groups.google.com/d/optout. >>> >> -- >> The following information is important for all members of the V iPhone >> list. >> >> If you have any questions or concerns about the running of this list, or >> if you feel that a member's post is inappropriate, please contact the >> owners or moderators directly rather than posting on the list itself. >> >> Your V iPhone list moderator is Mark Taylor. Mark can be reached at: >> mk...@ucla.edu. Your list owner is Cara Quinn - you can reach Cara at >> caraqu...@caraquinn.com >> >> The archives for this list can be searched at: >> http://www.mail-archive.com/viphone@googlegroups.com/ >> --- >> You received this message because you are subscribed to the Google Groups >> "VIPhone" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to viphone+unsubscr...@googlegroups.com. >> To post to this group, send email to viphone@googlegroups.com. >> Visit this group at https://groups.google.com/group/viphone. >> For more options, visit https://groups.google.com/d/optout. >> > > -- > Christopher (CJ) > Chaltain at Gmail > > -- > The following information is important for all members of the V iPhone > list. > > If you have any questions or concerns about the running of this list, or if > you feel that a member's post is inappropriate, please contact the owners or > moderators directly rather than posting on the list itself. > > Your V iPhone list moderator is Mark Taylor. Mark can be reached at: > mk...@ucla.edu. Your list owner is Cara Quinn - you can reach Cara at > caraqu...@caraquinn.com > > The archives for this list can be searched at: > http://www.mail-archive.com/viphone@googlegroups.com/ > --- > You received this message because you are subscribed to the Google Groups > "VIPhone" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to viphone+unsubscr...@googlegroups.com. > To post to this group, send email to viphone@googlegroups.com. > Visit this group at https://groups.google.com/group/viphone. > For more options, visit https://groups.google.com/d/optout. > -- The following information is important for all members of the V iPhone list. If you have any questions or concerns about the running of this list, or if you feel that a member's post is inappropriate, please contact the owners or moderators directly rather than posting on the list itself. Your V iPhone list moderator is Mark Taylor. Mark can be reached at: mk...@ucla.edu. Your list owner is Cara Quinn - you can reach Cara at caraqu...@caraquinn.com The archives for this list can be searched at: http://www.mail-archive.com/viphone@googlegroups.com/ --- You received this message because you are subscribed to the Google Groups "VIPhone" group. To unsubscribe from this group and stop receiving emails from it, send an email to viphone+unsubscr...@googlegroups.com. To post to this group, send email to viphone@googlegroups.com. Visit this group at https://groups.google.com/group/viphone. For more options, visit https://groups.google.com/d/optout.
