A friend wants this phone but he's on Telus in Canada. Telus has CDMA and is also 3G+. I understand the EVO is CDMA so I am wondering:
a) Will the phone work on Telus under the CDMA network 850/1900.
b) If so do we need to do something TO the EVO in order for this to work (such as some form of unlocking)
Any help is very appreciated!
Telus is GSM, so no. Their CDMA is not compatible with the EVO (different signal characteristics and different frequency).
phobos512 said:
Telus is GSM, so no. Their CDMA is not compatible with the EVO (different signal characteristics and different frequency).
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This wrong information. I hope the original thread owner didn't take the response.
HTC Evo CAN work on Telus!
HTC Evo working in Canada
I got an Evo in December and just moved to Canada for a job (Vancouver). I love this phone and want to get it working here with Telus. From what I've read, it looks like there is a way to get the EVO working here, but I can't find any specifics. Any tips?
OK i hope this hasn't been talked about already, I couldn't find it. If i understand correctly...the EVO is a world model phone and is capable of both CDMA as well as GSM. I could be wrong...I have an ATT plan and Im sick of Sprint service however i love my evo. has anyone successfully made a GSM rom for these phones? if so where do i find it or would someone be willing to give it a shot? I might need to "repair' my ESN too. any input other than "I'm a dumb a$$ for thinking of it" would be appreciated thanks.
Impossible to get the Sprint HTC Evo onto the AT&T network. AT&T uses SIM cards, which the Evo does not have.
The evo is not a world phone, it's purely CDMA & WiMax. AT&T uses GSM for voice, which is the world standard. AT&T currently uses some variant of HSPA for data, I believe.
What that boils down to is that no, you can't put an evo on AT&T. The only other major compatible network is Verizon, which also uses CDMA. However, Sprint is the only carrier that uses WiMax for 4G, so you'd be out of luck there.
There's also the thorny issue of CDMA carriers not allowing equipment from competitors activate on their accounts. Some smaller carriers will take devices from other carriers, but I don't really know much about them.
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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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
is there a possibility to make usable a CDMA phone to work in GSM...?
That depends there are patches some work but it depends on the the firmware like ics jb or gb I'm trying to get GSM to work on CDMA
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darkharbinger81 said:
That depends there are patches some work but it depends on the the firmware like ics jb or gb I'm trying to get GSM to work on CDMA
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so can u tell me where should be directed if u know for more information about this problem...?
I thought GSM required sim cards?
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Yea, sim cards, frequencies, etc...
There is a lot more involved in the two different technologies than just "cooking" up a ROM.
I don't believe it possible to change a phone from gsm to CDMA and vice versa. Nor can it be tdma, or any other wireless technology. They operate on different bandwidths.
Think of it as attempting to transmit FM radio on a AM station.
Sent from my PC36100 using Tapatalk 2
cbucz24 said:
Yea, sim cards, frequencies, etc...
There is a lot more involved in the two different technologies than just "cooking" up a ROM.
I don't believe it possible to change a phone from gsm to CDMA and vice versa. Nor can it be tdma, or any other wireless technology. They operate on different bandwidths.
Think of it as attempting to transmit FM radio on a AM station.
Sent from my PC36100 using Tapatalk 2
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Chuck Norris listens to AM radio on his FM radio...
Sent from my SPH-L710 using xda premium
cbucz24 said:
Yea, sim cards, frequencies, etc...
There is a lot more involved in the two different technologies than just "cooking" up a ROM.
I don't believe it possible to change a phone from gsm to CDMA and vice versa. Nor can it be tdma, or any other wireless technology. They operate on different bandwidths.
Think of it as attempting to transmit FM radio on a AM station.
Sent from my PC36100 using Tapatalk 2
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Click to collapse
Lets hope darkharbinger81 to make smth with his patches
Sent from my HTC Desire using xda premium
Two basic technologies in mobile phones, CDMA and GSM represent a gap you can't cross. They're the reason you can't use AT&T phones on Verizon's network and vice versa.CDMA (Code Division Multiple Access) and GSM (Global System for Mobiles) are shorthand for the two major radio systems used in cell phones. Both acronyms tend to group together a bunch of technologies run by the same entities. In this story, I'll try to explain who uses which technology and what the real differences are.
Which Carries are CDMA? Which are GSM?
Five of the top seven carriers in the U.S. use CDMA: Verizon Wireless, Sprint, MetroPCS, Cricket, and U.S. Cellular. AT&T and T-Mobile use GSM.
That means we're mostly a CDMA country. It also means we're not part of the norm, because most of the world is 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. What we call CDMA, by and large, is owned by chipmaker Qualcomm. This made it less expensive for third parties to build GSM equipment.
There are several variants and options carriers can choose, like toppings on their technological ice cream. In this story we'll be talking about U.S. networks.
For call quality, the technology you use is much less important than the way your carrier has built its network. There are good and bad CDMA and GSM networks, but there are key differences between the technologies. Here's what you, as a consumer, need to know.
It's much easier to swap phones on GSM networks, because GSM carriers put customer information on a removable SIM card. Take the card out, put it in a different phone, and the new phone now has your number. What's more, to be considered GSM, a carrier must accept any GSM-compliant phone. So the GSM carriers don't have total control of the phone you're using.
That's not the case with CDMA. In the U.S., CDMA carriers use network-based white lists to verify their subscribers. That means you can only switch phones with your carrier's permission, and a carrier doesn't have to accept any particular phone onto its network. It could, but typically, U.S. carriers choose not to.
In other words, you can take an unlocked AT&T phone over to T-Mobile (although its 3G may not work well because the frequency bands are different). You can't take a Verizon phone over to Sprint, because Sprint's network rejects non-Sprint phones.
3G CDMA networks (known as "EV-DO" or "Evolution Data Optimized") also, generally, can't make voice calls and transmit data at the same time. Once more, that's an available option (known as "SV-DO" for "Simultaneous Voice and Data Optimization"), but one that U.S. carriers haven't adopted for their networks and phones.
On the other hand, all 3G GSM networks have simultaneous voice and data, because it's a required part of the spec. (3G GSM is also actually a type of CDMA. I'll explain that later.)
So why did so many U.S. carriers go with CDMA? Timing. 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 capacity, better call quality and more potential than the GSM of the day. GSM caught up, but by then those carriers' paths were set.
It's possible to switch from CDMA to GSM. Two carriers in Canada have done it, to get access to the wider variety of off-the-shelf GSM phones. But Verizon and Sprint are big enough that they can get custom phones built for them, so they don't see the need to waste money switching 3G technologies when they could be building out their 4G networks.
dimmy1405 said:
Lets hope darkharbinger81 to make smth with his patches
Sent from my HTC Desire using xda premium
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How about I am currently porting a gsm rom to cdma?
Sent from my R800x using xda premium
But we are talking about cdma to gsm, more accurate evo 4g verizon operator...
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darkharbinger81 said:
How about I am currently porting a gsm rom to cdma?
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Click to collapse
Porting a GSM rom to CDMA is not the same thing as using a CDMA phone on a GSM network.
Diablo67 said:
Two basic technologies in mobile phones, CDMA and GSM represent a gap you can't cross. They're the reason you can't use AT&T phones on Verizon's network and vice versa.CDMA (Code Division Multiple Access) and GSM (Global System for Mobiles) are shorthand for the two major radio systems used in cell phones. Both acronyms tend to group together a bunch of technologies run by the same entities. In this story, I'll try to explain who uses which technology and what the real differences are.
Which Carries are CDMA? Which are GSM?
Five of the top seven carriers in the U.S. use CDMA: Verizon Wireless, Sprint, MetroPCS, Cricket, and U.S. Cellular. AT&T and T-Mobile use GSM.
That means we're mostly a CDMA country. It also means we're not part of the norm, because most of the world is 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. What we call CDMA, by and large, is owned by chipmaker Qualcomm. This made it less expensive for third parties to build GSM equipment.
There are several variants and options carriers can choose, like toppings on their technological ice cream. In this story we'll be talking about U.S. networks.
For call quality, the technology you use is much less important than the way your carrier has built its network. There are good and bad CDMA and GSM networks, but there are key differences between the technologies. Here's what you, as a consumer, need to know.
It's much easier to swap phones on GSM networks, because GSM carriers put customer information on a removable SIM card. Take the card out, put it in a different phone, and the new phone now has your number. What's more, to be considered GSM, a carrier must accept any GSM-compliant phone. So the GSM carriers don't have total control of the phone you're using.
That's not the case with CDMA. In the U.S., CDMA carriers use network-based white lists to verify their subscribers. That means you can only switch phones with your carrier's permission, and a carrier doesn't have to accept any particular phone onto its network. It could, but typically, U.S. carriers choose not to.
In other words, you can take an unlocked AT&T phone over to T-Mobile (although its 3G may not work well because the frequency bands are different). You can't take a Verizon phone over to Sprint, because Sprint's network rejects non-Sprint phones.
3G CDMA networks (known as "EV-DO" or "Evolution Data Optimized") also, generally, can't make voice calls and transmit data at the same time. Once more, that's an available option (known as "SV-DO" for "Simultaneous Voice and Data Optimization"), but one that U.S. carriers haven't adopted for their networks and phones.
On the other hand, all 3G GSM networks have simultaneous voice and data, because it's a required part of the spec. (3G GSM is also actually a type of CDMA. I'll explain that later.)
So why did so many U.S. carriers go with CDMA? Timing. 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 capacity, better call quality and more potential than the GSM of the day. GSM caught up, but by then those carriers' paths were set.
It's possible to switch from CDMA to GSM. Two carriers in Canada have done it, to get access to the wider variety of off-the-shelf GSM phones. But Verizon and Sprint are big enough that they can get custom phones built for them, so they don't see the need to waste money switching 3G technologies when they could be building out their 4G networks.
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Click to collapse
Nice info. Knew some of that, but not all. Learned some good info. Thanks
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