Hi all, Firstly iv got a O2 UK branded desire. Iv already rooted it and im now running leedriod2.2 but my problem is I wish to also install the psfMod But im confused at which file I need to download, as the titlle suggests I need to know if its GSM or CDMA or how can I find this out. Thanks in advance.
suprvibes said:
Hi all, Firstly iv got a O2 UK branded desire. Iv already rooted it and im now running leedriod2.2 but my problem is I wish to also install the psfMod But im confused at which file I need to download, as the titlle suggests I need to know if its GSM or CDMA or how can I find this out. Thanks in advance.
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CDMA has no SIM, GSM does. Your phone is GSM.
Oh so thats the difference lol, I feel silly now. thanks for the reply.
Kalavere said:
CDMA has no SIM, GSM does. Your phone is GSM.
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Im almost certain this is wrong.
Its to do with the type of network you operator uses.
Can be found on the HBOOT Screen.
Bravo = GSM
Bravoc = CDMA
Aldasa said:
Im almost certain this is wrong.
Its to do with the type of network you operator uses.
Can be found on the HBOOT Screen.
Bravo = GSM
Bravoc = CDMA
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Click to collapse
Well yes, it's down to the cellular network used, codecs used to transmit the data, different frequency and network structure. But in the most absolute laymans terms, GSM has a removable SIM card and CDMA doesn't.
He wanted to know what file to download for his Desire, not a comparative on the different standards adoped by each technology. So I gave him the most basic answer so he could go ahead and install the program to his phone, makes sense don't you think?
Kalavere said:
Well yes, it's down to the cellular network used, codecs used to transmit the data, different frequency and network structure. But in the most absolute laymans terms, GSM has a removable SIM card and CDMA doesn't.
He wanted to know what file to download for his Desire, not a comparative on the different standards adoped by each technology. So I gave him the most basic answer so he could go ahead and install the program to his phone, makes sense don't you think?
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Click to collapse
well i have to give u right the CDMA is only operating in
2G Network CDMA 800 / 1900
3G Network CDMA2000
GSM in
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 900 / 2100
4G in
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 900 / 1700 / 2100
here is a little about it
In cellular service there are two main competing network technologies: Global System for Mobile Communications (GSM) and Code Division Multiple Access (CDMA). Cellular carriers including Sprint PCS, Cingular Wireless, Verizon and T-Mobile use one or the other. Understanding the difference between GSM and CDMA will allow you to choose a carrier that uses the preferable network technology for your needs.
The GSM Association is an international organization founded in 1987, dedicated to providing, developing, and overseeing the worldwide wireless standard of GSM. CDMA, a proprietary standard designed by Qualcomm in the United States, has been the dominant network standard for North America and parts of Asia. However, GSM networks continue to make inroads in the United States, as CDMA networks make progress in other parts of the world. There are camps on both sides that firmly believe either GSM or CDMA architecture is superior to the other. That said, to the non-invested consumer who simply wants bottom line information to make a choice, the following considerations may be helpful.
Coverage: The most important factor is getting service in the areas you will be using your phone. Upon viewing competitors' coverage maps you may discover that only GSM or CDMA carriers offer cellular service in your area. If so, there is no decision to be made, but most people will find that they do have a choice.
Data Transfer Speed: With the advent of cellular phones doing double and triple duty as streaming video devices, podcast receivers and email devices, speed is important to those who use the phone for more than making calls. CDMA has been traditionally faster than GSM, though both technologies continue to rapidly leapfrog along this path. Both boast "3G" standards, or 3rd generation technologies
also known as CDMA2000, is CDMA's answer to the need for speed with a downstream rate of about 2 megabits per second, though some reports suggest real world speeds are closer to 300-700 kilobits per second (kbps). This is comparable to basic DSL. As of fall 2005, EVDO is in the process of being deployed. It is not available everywhere and requires a phone that is CDMA2000 ready.
GSM's answer is EDGE (Enhanced Data Rates for GSM Evolution), which boasts data rates of up to 384 kbps with real world speeds reported closer to 70-140 kbps. With added technologies still in the works that include UMTS (Universal Mobile Telephone Standard) and HSDPA (High Speed Downlink Packet Access), speeds reportedly increase to about 275—380 kbps. This technology is also known as W-CDMA, but is incompatible with CDMA networks. An EDGE-ready phone is required.
In the case of EVDO, theoretical high traffic can degrade speed and performance, while the EDGE network is more susceptible to interference. Both require being within close range of a cell to get the best speeds, while performance decreases with distance.
Subscriber Identity Module (SIM) cards: In the United States only GSM phones use SIM cards. The removable SIM card allows phones to be instantly activated, interchanged, swapped out and upgraded, all without carrier intervention. The SIM itself is tied to the network, rather than the actual phone. Phones that are card-enabled can be used with any GSM carri
The CDMA equivalent, a R-UIM card, is only available in parts of Asia but remains on the horizon for the U.S. market. CDMA carriers in the U.S. require proprietary handsets that are linked to one carrier only and are not card-enabled. To upgrade a CDMA phone, the carrier must deactivate the old phone then activate the new one. The old phone becomes useless.
Roaming: For the most part, both networks have fairly concentrated coverage in major cities and along major highways. GSM carriers, however, have roaming contracts with other GSM carriers, allowing wider coverage of more rural areas, generally speaking, often without roaming charges to the customer. CDMA networks may not cover rural areas as well as GSM carriers, and though they may contract with GSM cells for roaming in more rural areas, the charge to the customer will generally be significantly higher.
International Roaming: If you need to make calls to other countries, a GSM carrier can offer international roaming, as GSM networks dominate the world market. If you travel to other countries you can even use your GSM cell phone abroad, providing it is a quad-band phone (850/900/1800/1900 MHz). By purchasing a SIM card with minutes and a local number in the country you are visiting, you can make calls against the card to save yourself international roaming charges from your carrier back home. CDMA phones that are not card-enabled do not have this capability, however there are several countries that use CDMA networks. Check with your CDMA provider for your specific requirements.
According CDG.org, CDMA networks support over 270 million subscribers worldwide, while GSM.org tallies up their score at over 1 billion. As CDMA phones become R-UIM enabled and roaming contracts between networks improve, integration of the standards might eventually make differences all but transparent to the consumer.
The chief GSM carriers in the United States are Cingular Wireless, recently merged with AT&T Wireless, and T-Mobile USA. Major CDMA carriers are Sprint PCS, Verizon and Virgin Mobile. There are also several smaller cellular companies on both networks.
janielsen said:
well i have to give u right the CDMA is only operating in
2G Network CDMA 800 / 1900
3G Network CDMA2000
GSM in
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 900 / 2100
4G in
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 900 / 1700 / 2100
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I know this, I don't really care either if you'll excuse my bluntness. The question was simple enough and I gave a very simple answer.
Kalavere said:
I know this, I don't really care either if you'll excuse my bluntness. The question was simple enough and I gave a very simple answer.
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i dont excute anything
im just pointing out that u are right
an i explaine to the person ho ask fore it
what an how about GSM an CDMA
it has nothing todo whit u or ur answer
In most cases I've seen, GSM are European variants of the device and CDMA are usually US devices.
That is just from my own experience though, so I could be wrong..
Sent from my GT-P1000 using XDA Premium App
Kalavere said:
CDMA has no SIM, GSM does. Your phone is GSM.
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o yeah?? how comes mine have sim card slots?
yess the CDMAs ussualy not having sim card slots we must injection the number to the phone, but mine have the slots.
for not trying for making another thread, i also want a help from you guys here.
my phones are HTC desire ADR6275,
android ver 2.2
baseband version (also called radio ver) 2.15.00.09.88
kernel 2..6.32.21-g7a207a4
build number 2.11.573.5 CL325935
PRI version 1.70_027
i have trouble for read and access my SIM card for reading phone book and also having call from my SIM card.
is it because the radio version or the OS version or ??
Hi,
I'm going to the states soon and wonder if I can just walk into a store and buy a prepaid SIM card that will work with my GSM TP2.
Or do I need "special" CDMA cards?
All I want is to have a number for emergencies, etc..
Thanks in advance!
Markstar said:
Hi,
I'm going to the states soon and wonder if I can just walk into a store and buy a prepaid SIM card that will work with my GSM TP2.
Or do I need "special" CDMA cards?
All I want is to have a number for emergencies, etc..
Thanks in advance!
Click to expand...
Click to collapse
If you have a GSM Rhodium, then you'll need to get a SIM from a GSM carrier here. AT&T and T-Mobile are the top two GSM carriers here. CDMA carriers do not offer SIM cards to anyone except for their own customers going overseas as far as I know. As long as your device is SIM unlocked, then yes, you can just put any SIM card in it, and it will work.
3G coverage will be based on your device model. European Rhodium models will not get US 3G service. AT&T 3G services work on the 850 & 1900 UMTS bands. T-Mobile 3G is on the 1700 & 2100 UMTS bands. The device needs both to work properly on one carrier's 3G service.
i know this is the wrong section, but the guys in the ATT section aren't as smart as you guys.
i have a motorola atrix from ATT which is gsm, but motorolas web site says phone is ===
NETWORKS4
WCDMA 850/1900/2100, GSM 850/900/1800/1900, HSDPA 14Mbps (Category 10) Edge Class 12, GPRS Class 12, eCompass, AGPS
and sprint is wcdma so is there a way i can use this phone on sprint, if so what will i need to do ?
No, ATT is a gsm network, sprint is a cdma network. Cannot cross the two.
but specs. says it's dual network, what does that mean ?
tattoo jaco said:
but specs. says it's dual network, what does that mean ?
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WCDMA is the 3G technology used in the US by AT&T and T-Mobile.
WCDMA defined
But the term "CDMA" is also commonly used to refer to one specific family of technologies (IS-95 and CDMA2000) used in the US by Sprint and Verizon Wireless.
CDMA defined
tattoo jaco said:
but specs. says it's dual network, what does that mean ?
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Click to collapse
Meaning you could possibly have usage of it overseas, on other gsm carriers on different bands.
You could use the phone on t-mobile because they are gsm, but not sprint, as they're cdma.
ok i knew i'd get the answers i needed in here, thanks guys.
is there a way to get it working with my tmobile sim(family mobile?)
Doubtful. I'm no dev but I don't think cdma systems and roms cant run on gsm phones. I may be wrong though.
We're comin from a pure power source.
The sim in the dual band phones I believe will only work if the cdma is activated that's how it worked on my blackberry tour world edition which was dual band GSM/cdma but the GSM wouldn't work without cdma being active so I doubt the design will work on tmo the dual band in it is basically for when you travel to a GSM only location but still have cdma service they come with a sprint sim card that basically unlocks roaming on GSM towers
We are legion, for we are many
Hi, I am sorry if this has been asked already. I am wondering whether a Sprint Samsung S6 Edge PLUS can be unlocked(Via Sprint, not third party) to work on other networks? I am currently on Verizon and am considering buying my friend's S6 Edge plus because he gave me a good deal. Thanks for your time.
Sprint would unlock it . Its happened to a few people i know who purchased it outright . Call sprint and ask for the device to be unlocked domestically
USA Prepaid?
Can this be done to use a Sprint S6 on a USA prepaid carrier?
What if phone is brand new and never activated on sprint network?
It'll work in the USA but no lte support as of yet for sprint unlocked to gsm
Yes and No, the G925P is a Sprint phone meaning its a CDMA Phone, Verizon uses the same technology on their network, CDMA phones have to be reprogrammed to work on another carrier using a CDMA Network. But this phone is a dual GSM/CDMA Phone, meaning since GSM phones use a SIM Card so you can if Sprint Unlocks the phone because you own it outright you can go to another GSM carrier and some or all the features might work, this phone is different than the G925F international GSM phone which will work almost anywhere in the world as long as its connecting to a GSM Network. All you do then is just change the SIM card and your connected to that carrier. If you want to be on Verizon its best to just get a G925V from them because its already programmed for Verizon rather than trying to make this Sprint Phone work on their CDMA Network. It can be done but to reprogram the damn thing is not that easy and very time consuming for a newbie to tackle. Sell it, get a Verizon phone if you like it that much. or switch to Sprint.
here is an easy way to look at this, LTE is built on GSM hence why the new sprint/verizon LTE phones have SIM cards, you can try to switch to AT+T or T-Mobile but you may loose 2g-3g connectivity, maybe, maybe not all depends on the phone variant, so lets look at Verizon
Verizon -
CDMA/LTE
uses 700 MHZ (band 13) and 1700 MHZ (band 4)
Sprint-
CDMA/LTE
uses 800 MHZ and 1900 MHZ (band 26 and 25)
and 2.5 GHZ for Sprint Spark (band 41)
so you see they operate on different bands, I noticed not all S6's have the same bands either, depends on the carrier and these phones are made for them to be different, so to find a phone that has all of these bands would work in theory on any network but with CDMA they have electronic serial numbers embedded in the device and you will have to reprogram the radio/chip in order to work on another carrier. So to answer can I use a sprint phone on verizon would be a simple NO.