Now that you know that T-Mobile supports GSM networks, you must be wondering how you can check if your device is CDMA or GSM. Here are the steps to check. To check, open the settings on your device. Visit “About Phone”. See if you can find the IMEI number, ESN, or MEID. If your device shows an IMEI number, then your phone is …Samsung Galaxy S5 (USA) Android smartphone. Announced Feb 2014. Features 5.1″ display, Snapdragon 801 chipset, 16 MP primary camera, 2 MP front camera, 2800 mAh battery, 16 GB storage, 2 GB RAM ...Jul 7, 2022 · Verizon is not a GSM network carrier, but instead uses a CDMA network, meaning that if you have a CDMA compatible cell phone, you’ll be able to use it with Verizon. Verizon has been moving away from CDMA and to a more unified LTE network. LTE network support 4G and 5G technology, most of the people still using 3G technologies, but this doesn ... Does Verizon use GSM or CDMA? AT&T and T-Mobile are GSM wireless networks. Code-division multiple access (CDMA) is used mainly in the US. Verizon uses CDMA technology and is the largest wireless carrier in the US, but CDMA market share around the world is estimated to be less than 20%.In my experience, the "GSM carriers", AT&T and Tmobile use IMEI, while Verizon and Sprint would show an MEID. I've always assumed that MEID is the CDMA equivalent of the IMEI. When I have no SIM or my Tmobile SIM in my Pixel 4, if I go to "About Phone" it shows an IMEI number. If I insert the Visible SIM, the phone …CDMA stands for “Code Division Multiple Access.”. GSM stands for “Global System for Mobiles.”. They are 2 radio networks used by wireless carriers. If the GSM/CDMA divide has popped up on your radar, it’s likely because you tried to transfer a phone from one …CDMA and GSM are two popular 2G and 3G radio technologies, but Verizon uses CDMA and sells phones that support both bands. Learn how to check which …– Most unlocked, GSM-network phones – Unlocked AT&T, T-Mobile, Cricket Wireless, Simple Mobile, and Straight Talk phones – Most phones with a SIM card You may need to hit up your carrier to unlock your phone (and major Mint savings). If you’re still not sure if your phone will work with Mint Mobile, visit …Sep 23, 2022 · It wasn't that long ago when switching between carriers meant having to worry about whether your phone was GSM or CDMA. Those days are gone. GSM and CDMA were associated with 3G networks. Even with 4G LTE, 3G was still used for most calls and SMS texts. All three of the major carriers have sunsetted 3G. GSM (Global System for Mobile Communications) is a different protocol than CDMA, which Verizon’s original network was based on. However, with the transition to …Hi, I just bought a random off-brand phone from Amazon, not realizing there was a difference between GSM and CDMA. I know, I know. Anyway, I have my Verizon SIM card and the phone is working fine on wifi, but no dice in activating my Verizon account. The phone is the Posh Mobile Titan HD E500 4G ...The new date is officially Dec. 31, 2022. Eli Blumenthal. March 30, 2021 9:56 a.m. PT. 2 min read. Angela Lang/CNET. The end of Verizon's 3G network is near, for real this time. After announcing ... GSM and CDMA are competing wireless technologies with GSM enjoying about an 82% market share globally. In the U.S., however, CDMA is the more dominant standard. Technically GSM (Global System for Mobile communications, originally from Groupe Spécial Mobile) is a specification of an entire wireless network infrastructure, while CDMA relates only to the air interface — the radio portion of ... Currently, Q Link Wireless uses T-Mobile’s network towers. Before Sprint and T-Mobile merged in April 2020, Q Link Wireless used Sprint’s network towers. Sprint used to work on the CDMA network, while T-Mobile functions on GSM technology. This means that all Q Link customers can use the network whether they have a GSM or CDMA …Determining if Your Phone Is a CDMA or GSM Phone. First things first; it is easy to guess which network your phone is based on your carrier. If you bought your phone from Verizon, it is probably a CDMA phone. Since Verizon uses CDMA as its standard infrastructure for telecommunications, any phone bought from Verizon will be configured for CDMA.Nov 1, 2015 ... Correct answer: What mobile network provides the best service? The Verizon rep says I should use LTE /GSM /UMTS. The phone wants to default ...3G CDMA is the third generation code division multiple access communication technology offered by Qualcomm. Qualcomm is a wireless telecommunications and technology provider locate...Sep 23, 2012 ... Free Apps If you like to get free apps for your iphone/ipod touch and ipads click on link below http://m.freemyapps.com/share/email/58ce86b9 ...The LTE standard is a fourth-generation network technology that allows mobile networks on GSM and CDMA tracks to migrate to 4G. LTE is neither GSM nor CDMA but a separate technology that provides the 4G migration path to 3G UMTS and 3G CDMA2000 networks. All 4G LTE networks, including those that use UMTS or CDMA2000 for 3G, …As you can see in this bar chart, the vast majority of 4G LTE mobile data volume goes through mid-band spectrum. That would be the 1900MHz band 2 (B2) for AT&T; the 1900MHz B2 together with 1700MHz AWS bands B4 and B66 for Verizon; and pretty much the same combination of B2, B4 and B66 for T-Mobile. Those bands make …Jan 27, 2021 ... I think now, even Verizon is mostly using LTE now (and 5G mmWave, but the latter isn't available in Canadian iPhones). CDMA is pretty much dead ...The future is mobile—and video. If you were to explain Verizon’s $4.4 billion deal to acquire AOL in one word, it would be: mobile. The modern smartphone, epitomized by Apple’s iPh...As for Verizon version, it is LOCKED to Verizon (not for use on Sprint or other CDMA networks) but also offers GSM Cellular unlocked for ...A Verizon Wireless customer from Oregon checked his account balance over the phone and was astonished to learn it over $2 million. By clicking "TRY IT", I agree to receive newslett...Of course, with 4G LTE and 5G the current standards, GSM and CDMA networks are heading towards obsoletion. In fact, many network carriers in the US, like AT&T, T-Mobile, and Verizon, are phasing ...Mar 29, 2018 ... ... Verizon phone. Verizon is a CDMA system not GSM. I thought it would work as it is compatible with some GSM SYSTEMS. I had finally decided on...Jul 4, 2017 · Re: Using Unlocked GSM on Verizon. 07-05-2017 01:38 PM. Whichever phones you are considering needs to have the LTE band 13 for Verizon Wireless. Then it should also have the CDMA radios for Verizon Wireless unless it could function as an LTE only device with VoLTE. I'm most definitely NOT a VZW employee. As for Verizon version, it is LOCKED to Verizon (not for use on Sprint or other CDMA networks) but also offers GSM Cellular unlocked for ...Global Services for Mobile communications, or GSM, is a telecommunications company that is used throughout Nigeria. GSM was introduced to the Nigerian market in 2001, when it repla...The easiest way to determine whether your phone uses CDMA or GSM is to check with your carrier or manufacturer. In the United States, Verizon, Sprint, and US Cellular use CDMA technology, while AT&T and T-Mobile use GSM. Other countries around the world may use different technologies, so it’s important to do your research before traveling ...You read that right, though your skepticism is well-placed. Verizon announced over the weekend that it’s bringing back an unlimited data plan, for $80/month for a single line. Of c...Verizon is an American wireless network operator that previously operated as a separate division of Verizon Communications under the name Verizon Wireless. ... Verizon's CDMA network was shut down on December 31, 2022. Frequency bands used on the Verizon Network Frequency Band Band Number Protocol Generation Home Location Register (HLR): The Home Location Register (HLR) is the main database of permanent subscriber information for a mobile network. The HLR is an integral component of CDMA (code division multiple access), TDMA (time division multiple access), and GSM (Global System for Mobile communications) networks. Maintained by the subscriber's ... 🔑 Key Takeaways:. GSM Unlock allows you to use other SIM cards besides the one you bought with your phone.; Although GSM unlocking makes your phone compatible with most SIM cards, a few exceptions exist, like Verizon, Sprint, and other non-GSM networks.; Before unlocking your phone, you should confirm whether it is SIM …Before they merged with T-Mobile, they were a CDMA/LTE carrier. After merging with T-Mobile, T-Mobile shut off their CDMA network and metroPCS is now a GSM/HSPA/LTE carrier (same network as T-Mobile). Carriers I've used: Sprint, T-Mobile, Cricket, AT&T, Verizon, Page Plus, Virgin Mobile, Movistar, …The LTE network on Verizon Wireless is a GSM network. The CDMA networkffor VZW is being shutdown by the end of 2019. Verizon Wireless has recently required all phones activated on the network be capable of VoLTE/Advanced Calling meaning calls go over the LTE network. If you want a pure GSM network, AT&T and T …Jun 21, 2017 ... Generally speaking, since the device is a CDMA device, the best chance of it working with another carrier is with a CDMA carrier (Sprint). The ...Aug 2, 2019 ... GSM vs CDMA: Difference between GSM, IS 95 and CDMA2000 · Mobile Network Types as Fast As Possible · My LAST T-Mobile video!!.. · Cellular Phon... As Verizon continues to build the future, we would like to keep you up to date with some important activities. We are actively decommissioning our 3G/4G Non-VoLTE CDMA network and will complete this transition by December 31st, 2022. In my experience, the "GSM carriers", AT&T and Tmobile use IMEI, while Verizon and Sprint would show an MEID. I've always assumed that MEID is the CDMA equivalent of the IMEI. When I have no SIM or my Tmobile SIM in my Pixel 4, if I go to "About Phone" it shows an IMEI number. If I insert the Visible SIM, the phone …Verizon is no longer CDMA. Phones that have CDMA capability must be flagged as as CDMA_Less so it won't attempt to connect with CDMA. This is why OnePlus phones must be flagged as CDMA_Less. Verizon requires new devices to be LTE only. LTE - Long Term Evolution is not GSM or CDMA. Previously phones would use LTE for data and GSM or …Amazon.com: Xiaomi 13T Pro 5G Dual 512GB ROM 12GB RAM Factory Unlocked (GSM Only | No CDMA - not Compatible with Verizon/Sprint) Global Mobile …CDMA and GSM is basically long gone but for T-Mobile's 2G network. That will end on April 2, 2024 tho. Most carriers are LTE/NR now. Any Tracfone brands which includes Straight Talk will be Verizon only. I know some SIM kits are coming with T-Mobile based SIMs, but it seems like they are not easy to use. 2.Mar 20, 2019 · CDMA (or code-division multiple access, if you don't want to be lazy about it) is a network technology that along with GSM were once the two main types of networks in the US. Both CDMA and GSM (in their own ways) make it possible for for multiple calls and internet to be transmitted in one radio signal. The technology helped support the boom of ... CDMA and GSM is basically long gone but for T-Mobile's 2G network. That will end on April 2, 2024 tho. Most carriers are LTE/NR now. Any Tracfone brands which includes Straight Talk will be Verizon only. I know some SIM kits are coming with T-Mobile based SIMs, but it seems like they are not easy to use. 2.T-Mobile is a GSM network carrier and works with GSM cell phones. GSM - which stands for Global System for Mobile Communications - is one of two types of wireless frequencies used for cell phone service. CDMA and GSM provide 3G service to fill in the gaps when your 4G signal drops. Cell phone technology has evolved to allow most …As for Verizon version, it is LOCKED to Verizon (not for use on Sprint or other CDMA networks) but also offers GSM Cellular unlocked for ...US Mobile 5G Coverage. The 5G in Warp's branding is a bit confusing. Warp 5G uses both Verizon's 5G and Verizon's 4G LTE services. In fact, Verizon covers significantly more area with 4G than 5G. US Mobile's GSM service isn't limited to 4G—it uses T-Mobile's 5G network as well. While T-Mobile lags behind Verizon …Mar 29, 2018 ... ... Verizon phone. Verizon is a CDMA system not GSM. I thought it would work as it is compatible with some GSM SYSTEMS. I had finally decided on...“The competitive environment has changed again here in the fourth quarter, and you can expect us to respond accordingly.” “The competitive environment has changed again here in the...Does Verizon use GSM or CDMA? AT&T and T-Mobile are GSM wireless networks. Code-division multiple access (CDMA) is used mainly in the US. Verizon uses CDMA technology and is the largest wireless carrier in the US, but CDMA market share around the world is estimated to be less than 20%.The first three use CDMA while the last two use GSM. CDMA & GSM phone technologies have an internetwork barrier. This is why AT&T won’t work on a Verizon network, and Verizon will not work on an AT&T network. The differences between GSM and CDMA technologies include: 1. Area of usage and availability The Verizon network is a CDMA wireless network. What does the CDMA/GSM difference mean? One major distinction between GSM networks and CDMA networks is that the former allows you to make voice calls and transmit data at the same time, while the latter does not. But there's a catch. GSM and CDMA standards apply to 2G and 3G connectivity. Since 2000, we've invested more than $145 billion to meet today’s surging demand for wireless data and video, and to get our network ready for 5G wireless technology. Our commitment to network excellence has kept us at the top of J.D. Power® 2003-2023 Volume 1 and 2 U.S. Wireless Network Quality Performance Studies -- thirty one times in a .... GSM stands for Global System for Mobile Communication Voices, while CDMA stands for Code Division Multiple Access. GSM uses FDMA (Frequency division multiple access) and TDMA (Time division multiple access).GSM supports transmitting data and voices both at once, but CDMA does have not this feature. …Sep 25, 2020 · Solution. 09-25-2020 07:46 AM in. hi i found this for you In the US, Sprint, Verizon, and US Cellular use CDMA. AT&T and T-Mobile use GSM. Most of the rest of the world uses GSM. The global spread of GSM came about because in 1987, Europe mandated the technology by law, and because GSM comes from an industry consortium. GSM is a second-generation (2G) cellular technology and also an evolution path that uses UMTS for 3G migration and LTE for 4G. CDMA is a multiple access technology which enables the CDMA evolution path in mobile networks that uses IS-95 (cdmaOne) for 2G, CDMA2000 for 3G and LTE for 4G migration.As of now, Xfinity Mobile (XM) has not released any official correspondence relating to this matter. Judging from the article itself, it sounds like Verizon is preemptively taking actions to reduce and eventually remove order devices/technology from the network. The article indicates that by 1/1/2021, support for CDMA devices “may receive ...Traditionally, Verizon is known as a CDMA carrier, but some GSM phones still work on the Verizon network. Prior to the 2010s, Verizon only allowed CDMA-only …Nov 2, 2023 · Since it started GSM has evolved much faster than CDMA and 4G LTE is a GSM standard which means that both Verizon and Sprint are now using GSM technology on their previous CDMA phones. GSM, along with CDMA, is the technology that fills the gap when your 4G signal drops. May 22, 2011 · LTE, the standard, is backwards-compatible with HSPA/UMTS, which are prior GSM-based standards. However, VzW's implementation of LTE is a limited one, implementing ONLY the LTE data part of the GSM standard and using their existing 1xRTT/EVDO technology for voice and non-4g data. That's why the LTE phones they have now are non-global. Verizon is dropping its CDMA because it is only tech that is not used by many outside the US. GSM is the newer and better tech. Verizon does SIM card unlocked CDMA cell phones now and is dropping CDMA in 2019. yes I …Nov 1, 2015 ... Correct answer: What mobile network provides the best service? The Verizon rep says I should use LTE /GSM /UMTS. The phone wants to default ...Google Pixel 6a Android smartphone. Announced May 2022. Features 6.1″ display, Google Tensor chipset, 4410 mAh battery, 128 GB storage, 6 GB RAM, Corning Gorilla Glass 3.Google Fi is a wireless phone plan that can switch between different networks, including Sprint's CDMA and GSM networks, depending on the signal strength and availability. Learn more about how Google Fi works, its coverage, and its compatibility with various phones in this helpful forum thread.GSM and CDMA are competing wireless technologies with GSM enjoying about an 82% market share globally. In the U.S., however, CDMA is the more dominant standard. Technically GSM (Global System for Mobile …The only thing that is happening is the shut down of 3G. GSM and CDMA are dated standards since LTE is what is used for data. You're still going to have to be mindful of what radio bands an unlocked phone supports if it's one Verizon doesn't carry.Whether your iPad contains a GSM or CDMA radio depends on the carrier you purchased it for and the iPad model. The iPad Mini and iPad with Retina display purchased from Verizon Wir...Since 2000, we've invested more than $145 billion to meet today’s surging demand for wireless data and video, and to get our network ready for 5G wireless technology. Our commitment to network excellence has kept us at the top of J.D. Power® 2003-2023 Volume 1 and 2 U.S. Wireless Network Quality Performance Studies -- thirty one times in a ...Mode: GSM/HSPA/LTE Cat4 UMTS B2/4/5 LTE B2/4/5/12 (MFBI)/13/66/71 GSM 850/900/1800/1900. Since it is a NANO SIM, and is TF branded, if they actually send a GSM SIM... I'd do the activate/transfer dance, and then move that SIM to my iPhone SE, which is Tracfone branded but is on CDMA …As you can see in this bar chart, the vast majority of 4G LTE mobile data volume goes through mid-band spectrum. That would be the 1900MHz band 2 (B2) for AT&T; the 1900MHz B2 together with 1700MHz AWS bands B4 and B66 for Verizon; and pretty much the same combination of B2, B4 and B66 for T-Mobile. Those bands make …Mar 10, 2023 · Verizon's 3G network is now shut down. After December 31st, 2022, if you are a Verizon subscriber still rocking a device that is 3G (CDMA) or 4G that does not support HD Voice (Non-VoLTE), the device will no longer make/receive calls, send/receive text messages, or use data services. Until Saturday, your device may have still been able to use ... Whether your iPad contains a GSM or CDMA radio depends on the carrier you purchased it for and the iPad model. The iPad Mini and iPad with Retina display purchased from Verizon Wir... The Verizon network is a CDMA wireless network. What does the CDMA/GSM difference mean? One major distinction between GSM networks and CDMA networks is that the former allows you to make voice calls and transmit data at the same time, while the latter does not. But there's a catch. GSM and CDMA standards apply to 2G and 3G connectivity. 2G (GSM, GPRS, EDGE) Voice and data services don't work at the same time when on 2G. You cannot use data while on a call. International roaming. Our maps show coverage provided by T-Mobile in the U.S. T-Mobile partners with other providers who provide roaming in other countries. Check out where you are covered when …Nov 2, 2023 · Since it started GSM has evolved much faster than CDMA and 4G LTE is a GSM standard which means that both Verizon and Sprint are now using GSM technology on their previous CDMA phones. GSM, along with CDMA, is the technology that fills the gap when your 4G signal drops. As of now, Xfinity Mobile (XM) has not released any official correspondence relating to this matter. Judging from the article itself, it sounds like Verizon is preemptively taking actions to reduce and eventually remove order devices/technology from the network. The article indicates that by 1/1/2021, support for CDMA devices “may receive ...Update on our CDMA Network Transition Plans. October 22, 2021. 7 min read. To build out our revolutionary network that will deliver the broadest and deepest 5G experience FOR ALL across the country, we need to sunset outdated CDMA technologies as soon as possible so every consumer, no matter their …Hi, I just bought a random off-brand phone from Amazon, not realizing there was a difference between GSM and CDMA. I know, I know. Anyway, I have my Verizon SIM card and the phone is working fine on wifi, but no dice in activating my Verizon account. The phone is the Posh Mobile Titan HD E500 4G ...The United States, however, uses both GSM and CDMA networks. In the United States, Verizon Wireless, and U.S. Cellular use CDMA, while AT&T and T-Mobile use GSM. The main difference between CDMA and GSM technologies is how they connect to the network. GSM phones use removable Subscriber …Samsung Galaxy S21 FE 5G Android smartphone. Announced Jan 2022. Features 6.4″ display, Snapdragon 888 5G chipset, 4500 mAh battery, 256 GB storage, 8 GB RAM, Corning Gorilla Glass Victus.Feb 27, 2023 · In Canada, 2G and 3G phone technologies using GSM and CDMA frequency bands are being phased out. All carriers serving the provinces have shut down support for GSM, with the exception of Rogers Wireless which will end support effective December 31, 2020 . Unlike many unlimited plans out there, Visible Plus is truly unlimited. You could consume 100GB in a month (I have!) and still have access. Visible is great for those who don’t need reliable ...When Verizon's predecessors and Sprint switched from analog to digital in 1995 and 1996, CDMA was the newest, hottest, fastest technology. It offered more …Dec 15, 2011 ... http://DroidModderX.com http://DroidModderX.com/galaxynexus Twitter @DroidModderX files you need are here ...Currently, Q Link Wireless uses T-Mobile’s network towers. Before Sprint and T-Mobile merged in April 2020, Q Link Wireless used Sprint’s network towers. Sprint used to work on the CDMA network, while T-Mobile functions on GSM technology. This means that all Q Link customers can use the network whether they have a GSM or CDMA …US Mobile 5G Coverage. The 5G in Warp's branding is a bit confusing. Warp 5G uses both Verizon's 5G and Verizon's 4G LTE services. In fact, Verizon covers significantly more area with 4G than 5G. US Mobile's GSM service isn't limited to 4G—it uses T-Mobile's 5G network as well. While T-Mobile lags behind Verizon …Mar 26, 2020 · I use the prepaid side of Verizon, so I purchase my phones unlocked. I read that Verizon is doing away with the CDMA network this year. In the past my phones had to have both GSM & CDMA. Can I get phones that are only GSM now or does it still have to be CDMA? AT&T, Verizon, and T-Mobile all launched deals on Apple's new iPhone 8 and iPhone 8 Plus, but with Sprint's promotion, an iPhone 8 is $0 with a trade-in. By clicking "TRY IT", ...GSM (Global System for Mobiles) is a type of network used by phone carriers – the alternative type of network is CDMA, which we’ll briefly discuss later. If your phone is GSM …Jan 6, 2012 ... I've seen some chatter out there that the Verizon iPhone 4S has a critical flaw in that it cannot roam on a GSM network if there is also a CDMA ...Google Pixel 6a Android smartphone. Announced May 2022. Features 6.1″ display, Google Tensor chipset, 4410 mAh battery, 128 GB storage, 6 GB RAM, Corning Gorilla Glass 3.The $30 and $40 plans can use their entire high speed data allotment for hotspot usage counted against existing high speed data allotment. Once high-speed data allotment has been exhausted, hotspot cannot be used until next plan cycle. Hotspot is only available on compatible 4G LTE and 5G devices. Unlimited Calls available to up to 21 unique ...Both T-Mobile and AT&T use the GSM network, and therefore sell GSM-compatible phones. However, if you have a phone made in the last couple of years, you probably don't need to worry about which carriers use GSM or CDMA networks since most newer phones work on both networks. If you're interested in …May 31, 2023 · GSM networks were far more popular globally, but in the US, Verizon Wireless, a CDMA network at the time, had the highest number of subscribers and broadest coverage in the country. When it comes to international roaming , GSM had the upper hand, with a lot more GSM networks around the world, along with roaming deals between these providers. Jun 21, 2017 ... Generally speaking, since the device is a CDMA device, the best chance of it working with another carrier is with a CDMA carrier (Sprint). The ...AT&T announced that it phased out its 3G network beginning in February 2022. Verizon announced that it will finish shutting down its 3G network by December 31, 2022. T-Mobile announced that it finished shutting down Sprint's 3G CDMA network as of March 31, 2022 and Sprint's 4G LTE network as of June 30, 2022.The GSM network is more well known as the technology is used worldwide, whereas CDMA networks are only used in the US. This means if you travel a lot having a phone that uses a SIM card is the best way to check if …Currently, Q Link Wireless uses T-Mobile’s network towers. Before Sprint and T-Mobile merged in April 2020, Q Link Wireless used Sprint’s network towers. Sprint used to work on the CDMA network, while T-Mobile functions on GSM technology. This means that all Q Link customers can use the network whether they have a GSM or CDMA …Verizon will shut down its 3G network at the end of 2022, several years after its initial target. The company hasn’t activated new 3G-only phones since 2018.In my experience, the "GSM carriers", AT&T and Tmobile use IMEI, while Verizon and Sprint would show an MEID. I've always assumed that MEID is the CDMA equivalent of the IMEI. When I have no SIM or my Tmobile SIM in my Pixel 4, if I go to "About Phone" it shows an IMEI number. If I insert the Visible SIM, the phone …Legend. 03-12-2016 01:05 PM. None of the iPhone LTE phones are locked to Verizon and can be used on other compatible LTE networks GSM networks and the quickly disappearing CDMA networks. Remember even when you are here in the states most of the time you're not even using CDMA anymore with this iPhone 6s as LTE is an extension of GSM.View plans. First up is FreedomPop’s free plan. It’s actually 2 plans, depending on what type of phone you have: GSM or CDMA. The former gives you. Neither of those provide much in the way of data, but both provide a modest limit for people who typically just call or send a quick text when they’re out of the house.- Are we still limited in using only the phones Verizon CDMA supports and/or that Verizon carries and therefore not really able to use any Unlocked Phone like with other carriers despite Unlocked Phone benefits. You can only use a phone that Verizon allows on their network. GSM phones are not a good choice because they are not CDMA.(RTTNews) - The following are some of the stocks making big moves in Thursday's pre-market trading (as of 07.25 A.M. ET). In the Green Intuitiv... (RTTNews) - The following are ...Tri-band phones are wireless phones that operate on three bands. Code Division Multiple Access---or CDMA---and Time Division Multiple Access---TDMA---tri-band phones works on 1900 ... ---1