Related
I'm one of those guys that's interested in tinkering with things, including messing with the hardware of a phone, so logically what I found interesting about the latest rumors about the next hottest phone on the planet was that the Exynos version of the S4 will support LTE but won't have an LTE modem in it, while the Snapdragon version will have an LTE modem.
I'd like to assume that if you had two identical phones (any make/model), and one had a burned out modem for example, while the other had a burned out CPU, you could swap the modem chip to the working phone. I'm assuming the pinout on the CPUs would be completely different, thus preventing a CPU swap, yes this would void ANY and ALL warranties...
I have two questions based on this:
1) This one is a two-part question.
a) Will the 3G phone with the Exynos be unlocked?
b) If it is, is there any reason why it wouldn't be able to register with a US carrier?
2) If the above is possible, I can't help but wonder how difficult it would be for a professional to swap the modem chips between the two phones...
Admittedly, I don't know much about the boards on phones other than that I've seen JTAG ports added to some and RS232 ports added to others, but if those can be done, what's to stop someone (with the right experience) from doing a modem chip swap to get their Exynos to have 4G?
If this is one of those noob questions I'm sorry -- I'm more of a power user than anything, so I just don't know about the hardware aspect, but thats just something that would make sense to me.
Speeddymon said:
I'm one of those guys that's interested in tinkering with things, including messing with the hardware of a phone, so logically what I found interesting about the latest rumors about the next hottest phone on the planet was that the Exynos version of the S4 will support LTE but won't have an LTE modem in it, while the Snapdragon version will have an LTE modem.
I'd like to assume that if you had two identical phones (any make/model), and one had a burned out modem for example, while the other had a burned out CPU, you could swap the modem chip to the working phone. I'm assuming the pinout on the CPUs would be completely different, thus preventing a CPU swap, yes this would void ANY and ALL warranties...
I have two questions based on this:
1) This one is a two-part question.
a) Will the 3G phone with the Exynos be unlocked?
b) If it is, is there any reason why it wouldn't be able to register with a US carrier?
2) If the above is possible, I can't help but wonder how difficult it would be for a professional to swap the modem chips between the two phones...
Admittedly, I don't know much about the boards on phones other than that I've seen JTAG ports added to some and RS232 ports added to others, but if those can be done, what's to stop someone (with the right experience) from doing a modem chip swap to get their Exynos to have 4G?
If this is one of those noob questions I'm sorry -- I'm more of a power user than anything, so I just don't know about the hardware aspect, but thats just something that would make sense to me.
Click to expand...
Click to collapse
1. Carrier branded phones will be locked but you can find unlocked versions in cell phone stores.
If it is unlocked it will work with us carriers but not on LTE but HSPA +.
2. It not only hardware issues involved, there is also software issues involved as different chips are interconnected both on soft and hard levels so the phone does not have any conflicts on the motherbaord.
Bounty for the first person to post a solution to add the 1700 700 LTE bands to the n9005.
Seeing as its believed to be hardware supported many of us are trying to unlock those frequencies for true international LTE.
Possible solutions proposed:
Flashable AWS modem for n9005
NVRAM dump with AWS config.
Bids** so far:
IamNoone: 1BTC
Nakedtime: 20USD
xaviero17: 40USD
**Feel free to bid USD, I just happen to find BTC more appealing.
current BTC Trade value: http://bitcoinity.org/markets
Heres hoping we get some workable solutions. Even if they're easy.
If the hardware supports, you would simply need to import (and maybe modify slightly) the QCN file from an N900W8 variant and upload to your 9005 device.
QCN contains IMEI, must also be edited to remove imei.
Besides, has one been dumped from a W8?
Someone feel free to dump...
Would this mean we could use the 9005 on at&t LTE and 3g network?
Sent from my HTC One using XDA Premium 4 mobile app
dirtbikerr450 said:
Would this mean we could use the 9005 on at&t LTE and 3g network?
Sent from my HTC One using XDA Premium 4 mobile app
Click to expand...
Click to collapse
N9005 already operates on ATT HSDPA and UMTS.
This is for ATT LTE.
I would love to see lte band 18 and 19 supported. Those are the japanese 800Mhz bands, that practically no phone except the crippled japanese provider models support.
Anyway, modifying the radio to send on those (or any not certified) bands would very likely be illegal in nearly any jurisdiction, wouldn't it?
cgi said:
I would love to see lte band 18 and 19 supported. Those are the japanese 800Mhz bands, that practically no phone except the crippled japanese provider models support.
Anyway, modifying the radio to send on those (or any not certified) bands would very likely be illegal in nearly any jurisdiction, wouldn't it?
Click to expand...
Click to collapse
In a case like this it would be much more likely for it to be a hardware issue stopping you. I don't think that a band like that, which is not supported on any Snapdragon note 3 (or am I wrong?) Would be possible to just change by software. I do know that if the antenna isn't designed for the frequency the signal would suck and you would likely also get signal reflections into the phones output amps, among other problems. And that is assuming you child even get the chip to try to transmit on those bands....which I also don't think you could do
asaqwert said:
In a case like this it would be much more likely for it to be a hardware issue stopping you. I don't think that a band like that, which is not supported on any Snapdragon note 3 (or am I wrong?) Would be possible to just change by software. I do know that if the antenna isn't designed for the frequency the signal would suck and you would likely also get signal reflections into the phones output amps, among other problems. And that is assuming you child even get the chip to try to transmit on those bands....which I also don't think you could do
Click to expand...
Click to collapse
Not are not exactly wrong, but the bands 18 and 19 are very close to bands 5 and 6. Both are supported as far as I can tell, although 6 is only for UTMS. But that means that the power amps and antenna tuning should be there. Also, qualcomm advertises this "rf360 solution" which is supposed to support more or less all bands between 700 and 2700MHz. No idea, whether is is in the note3 though.
So you see, I did give this some thought.
cgi said:
I would love to see lte band 18 and 19 supported. Those are the japanese 800Mhz bands, that practically no phone except the crippled japanese provider models support.
Click to expand...
Click to collapse
We might want to make a separate Bounty for this kind of thing. Such as unlocking ALL frequencies supported by the Snapdragon.
cgi said:
Anyway, modifying the radio to send on those (or any not certified) bands would very likely be illegal in nearly any jurisdiction, wouldn't it?
Click to expand...
Click to collapse
I prefer to make the assumption that people have honorable intentions. For several people, they're just trying to get LTE on AT&T.
There's no good reason that anyone would want to use illegal frequencies, since such frequencies would likely not give them cell service anyway.
Sonorus said:
We might want to make a separate Bounty for this kind of thing. Such as unlocking ALL frequencies supported by the Snapdragon.
I prefer to make the assumption that people have honorable intentions. For several people, they're just trying to get LTE on AT&T.
There's no good reason that anyone would want to use illegal frequencies, since such frequencies would likely not give them cell service anyway.
Click to expand...
Click to collapse
I think what he means (judging from the knowledge he would seem to have on the topic) frequencies that are not certified for use in a given jurisdiction, not "illegal"frequencies in some other way. In the US fir example, if you use a device that transmits on any frequency that your device has not specifically been passed for by the fcc (and above a maximum power limit which is rather low, from what I recall) then you are breaking federal fcc regulation with respect to creating possible interference, transmitting radio signals on a band your device want created for etc. It can get you into big trouble. Having said that, unlocking your phone in the states is legal to, but no one is ever going to find out. Same thing with the frequency thing, they have those laws so that a) when someone creates interference they can stop/prosecute them and b) so they can stop people importing devices for sale that are not certified.
Having said that, if it is not a frequency that is explicitly supported by the hardware then but that is simply close to a supported one, it would require more than just a hack. It would require reverse engineering the Qualcomm code and then writing your own hardware interface software etc, that is assuming that the bands are close enough that the amps and antenna would work, then you would have to hack the rest of the firmware to actually utilize these new bands and actually talk to your other new software.
In short, it is highly unlikely that it would be possible, at least given the time and resources that most people would spend on dev work (which I understand is a lot but this is a much bigger deal than dev work on open source code) and also Qualcomm probably would not look to kindly on us reverse engineering their stuff. Also, it is quite possible that the hardware commands simply would not exist for the software to ask the hardware to do this. I am not familiar enough with the Qualcomm hardware nor mobile hardware in this way, as I've never programmed or dine dev work on android phones(single dad now with not enough time as it is) so I can't say for sure here but I have a hunch that the hardware simply was created to offer functionality on certain bands and that is all it would offer. If it was unsupported in software but supported in hardware, that's one thing, but unsupported in hardware pretty much means you're sol in my opinion
asaqwert said:
I think what he means (judging from the knowledge he would seem to have on the topic) frequencies that are not certified for use in a given jurisdiction, not "illegal"frequencies in some other way. In the US fir example, if you use a device that transmits on any frequency that your device has not specifically been passed for by the fcc (and above a maximum power limit which is rather low, from what I recall) then you are breaking federal fcc regulation with respect to creating possible interference, transmitting radio signals on a band your device want created for etc. It can get you into big trouble. Having said that, unlocking your phone in the states is legal to, but no one is ever going to find out. Same thing with the frequency thing, they have those laws so that a) when someone creates interference they can stop/prosecute them and b) so they can stop people importing devices for sale that are not certified.
Click to expand...
Click to collapse
That's exactly what I meant. If it was just a matter of editing a config file, it would be unlikely to cause any interference. I do assume, that the original radio firmware is well-behaved and doesn't start sending on a given frequency unless it picks up a cell tower there first. However, regulators have been known to look unkindly at uncertified devices, especially if you cause interference. And you most certainly void your certification if you modify the radio.
Anyway, I did unpack the radio firmware and looked around in it with a hex editor a bit, hoping for a lucky find of the needle in the haystack, so to say. What I found was not very encouraging. It's a batch of binary files. Some looking like bootloaders, others looking like L4 realtime kernels. There also seems to be a qurt kernel, whatever that is. Maybe some kind of Qualcomm realtime os implementation. Also dsp firmware or some such. Then I found some strings that might be part of digital signatures. I did some googling on suggestive strings I found, but if there is any documentation on that stuff, then Qualcomm keeps it secret (or I am too stupid to find it).
There was no such thing as "SupportLTEon700MHz=false" or something like that. Not that I expected anything like that.
So unless there is an insider somewhere willing to violate all kinds of NDAs and contracts, it is unlikely that this will happen, I think.
Both of you are making this more complicated than it probably needs to be.
For one, the phones that DO support 700 and 1700 use the same chipset. This is something that was done on the Note 2. A simple config change unlocked those frequencies. I believe we'd only need to repeat the concept for the Note 3. In other words, all we need is for someone familiar with the process to take on the job.
The Snapdragon 800 (N9005's chipset) does accept the LTE_B17 line of flags. (LTE band 17). It's already in the hardware, we just need to turn it on.
This bounty explicitly states for 700 and 1700 LTE bands, which the chipset DOES support at least 1 of those bands. This isn't about the Japanese bands, that was brought up by someone else and isn't what this topic is about. Please make a separate bounty for that feature so that people aren't confused about THIS topic.
So unless there is an insider somewhere willing to violate all kinds of NDAs and contracts, it is unlikely that this will happen, I think.
Click to expand...
Click to collapse
This has already happened on other phones. It's a matter of incentive.
Sonorus said:
Both of you are making this more complicated than it probably needs to be.
For one, the phones that DO support 700 and 1700 use the same chipset. This is something that was done on the Note 2. A simple config change unlocked those frequencies. I believe we'd only need to repeat the concept for the Note 3. In other words, all we need is for someone familiar with the process to take on the job.
The Snapdragon 800 (N9005's chipset) does accept the LTE_B17 line of flags. (LTE band 17). It's already in the hardware, we just need to turn it on.
This bounty explicitly states for 700 and 1700 LTE bands, which the chipset DOES support at least 1 of those bands. This isn't about the Japanese bands, that was brought up by someone else and isn't what this topic is about. Please make a separate bounty for that feature so that people aren't confused about THIS topic.
This has already happened on other phones. It's a matter of incentive.
Click to expand...
Click to collapse
http://wccftech.com/enable-t-mobile-hspa-aws-bands-on-at-t-galaxy-s4-sgh-i337-sgh-i337m/ as reference
WorldIRC said:
http://wccftech.com/enable-t-mobile-hspa-aws-bands-on-at-t-galaxy-s4-sgh-i337-sgh-i337m/ as reference
Click to expand...
Click to collapse
Ahh I would love to see this come out for the Note 3 a nice simple way to pick up the extra bands our hardware is capable of.
Me and another member got relatively far with this but was not able to flash the N900W8 modem onto an N9005 because the boot loader is locked. We were going to try a few other things before I gave up and just bought an N900W8 for cheaper than what I paid for the N9005.
The QCN file was edited to match that of an N900W8 with respect to a few entries in the LTE BC CONFIG. Unfortunately just changing it resulted in no service. We then proceeded to change the WCDMA band configuration to match, but like members of the S3, this is apparently overwritten some how by the device on boot. You need to reboot the phone for the modified QCN to take effect, so basically it did nothing.
Whatever solution you guys come up with its probably a matter of a complete modem and QCN file then reboot to make it happen.
I tried to write a custom update.zip file that overwrote the two partitions containing the modem.bin and NON-HLOS.bin without success.
Rogers parameter 6828:
https://docs.google.com/file/d/0B9KfOSKSSjgdSEE2Z043U09JTGc/edit?usp=sharing
LTE BC CONFIG MENTION:
http://forum.xda-developers.com/showpost.php?p=33234706&postcount=43
In regards to an update.zip. You must execute the flash after following the same sequence of steps as when flashing with odin. (eg remove battery, put battery in, hold vol down and home, plug in USB cable, then odin will come up) Except instead of vol down, use vol up. Something about this sequence unlocks the ability to flash modems (in odin, recovery and root). (if you don't do it, writes to the mmc will timeout)
While you /can/ flash modems for W8 and T on the N9005, they will fail to boot, apparently enforced by the PBL (the lowest level bootloader on the device).
Changing individual parameters in NVRAM may not take effect for a number of reasons;
1) There are two partitions (MODEM*1 and MODEM*2) that seem to contain NVRAM parameters, but are not directly part of EFS. They look like backups of critical parts of NVRAM, i suspect during the boot sequence, these BINs push NVRAM parameters into EFS, overwriting any changes. I was unable to trivially decipher the contents, but i didn't put a lot of effort into it.
2) Some kind of failsafe similar to the Modem flashing problem. (modem wont stick! maybe NVRAM wont either!)
3) Modem itself may set certain parameters in NVRAM. Only way to test this i think would be to try changing IMEI in NVRAM, and see if it reverts back on reboot. As the modem doesn't pertain to your IMEI, it would never correct it if it was incorrect.
Personally i think #2 is the case, and will try to enable change via cold boot method.
I have successfully changed the modem partition to contain arbitrary data, as long as the binaries are untouched. As soon as they are modified (even eg. changing the name of the baseband), they will not operate. So they are probably protected by signature or hash.
Got NV#06828 to stick as 5B0001. It was originally D50008.
It however, does not enable the necessary bands, it would appear. The value is persisting across reboots, so indeed it has been changed permanently.
I suspect NV#01877 needs modified as well. But i've been unsuccessful in getting it to stick.
I'm attempting to change 040002 to 060000 in item 1877.
The fact that i was able to write NV#06828 suggests that 01877 is likely changeable as well. Still haven't figure out what conditions are allowing writes to persist. Luck of the draw seems to be what makes it work.
Sonorus said:
Got NV#06828 to stick as 5B0001. It was originally D50008.
It however, does not enable the necessary bands, it would appear. The value is persisting across reboots, so indeed it has been changed permanently.
I suspect NV#01877 needs modified as well. But i've been unsuccessful in getting it to stick.
I'm attempting to change 040002 to 060000 in item 1877.
The fact that i was able to write NV#06828 suggests that 01877 is likely changeable as well. Still haven't figure out what conditions are allowing writes to persist. Luck of the draw seems to be what makes it work.
Click to expand...
Click to collapse
Interesting. Thanks for the information.
Sent from my SM-N9005 using Tapatalk
Bumping this
I'll pledge $20 for 700MHz AT&T band
I've searched for 3 days now, trying to get some info on this, there are various discussions on xda and on other sites that come along the same line, most of the answers are:
No it can't be done - it's hardware related - there are different variants for each region (seems this is not the case with the ONE)
You need someone with QPST but it probably can not be done.
But there is none that actually clears it up, it's mostly "I think it is...................."
What I found out is that the chip regulating 4G LTE connectivity on all HTC one variants is the same (600 MHz Hexagon QDSP6V5A part of the MSM8974 chip and it can sport the ALL LTE frequencies), so it is not a hardware difference between the EMEA and the Verizon, now the question is do I need someone with this QPST or will it only be a case of changing the baseband - all this, is my own conclusion, feel free to give me feedback on this
now on the Verizon site LTE spec says:
Network: LTE Band 13/4 (700/1700 MHz)
CDMA/1xEVDO Rev. A (800/1900 MHz)
the HTC site for Verizon says 4G LTE:
EMEA: 800/900/1800/2600 MHz
Verizon: 700/AWS/1800/2600 MHz
Yet I still don't get any 4G
Sadly there is so much info and it's hard to follow it all. So please can someone explain what and how things actually work?
Why do I need to know all this? Cause I have a Verizon m8 and I'm using it in Europe and I can't get 4G - atm I'm using Insertcoin with ElementalX 8.0.5 kernel and everything is working on the phone aside 4G - I flashed various roms on it, never had ANY problem, aside small things that a Google search solved.
Anyone that can enlighten me? Any help would be appreciated.
Bump
Sent from my HTC6525LVW using xda app-developers app
So are you not getting any 4G LTE? If so I'm not sure why. I get 4G LTE almost everywhere I go.
Sent from my HTC6525LVW using xda app-developers app
Nope not getting it at all
Sent from my HTC6525LVW using xda app-developers app
masucu said:
I've searched for 3 days now, trying to get some info on this, there are various discussions on xda and on other sites that come along the same line, most of the answers are:
No it can't be done - it's hardware related - there are different variants for each region (seems this is not the case with the ONE)
You need someone with QPST but it probably can not be done.
But there is none that actually clears it up, it's mostly "I think it is...................."
What I found out is that the chip regulating 4G LTE connectivity on all HTC one variants is the same (600 MHz Hexagon QDSP6V5A part of the MSM8974 chip and it can sport the ALL LTE frequencies), so it is not a hardware difference between the EMEA and the Verizon, now the question is do I need someone with this QPST or will it only be a case of changing the baseband - all this, is my own conclusion, feel free to give me feedback on this
now on the Verizon site LTE spec says:
Network: LTE Band 13/4 (700/1700 MHz)
CDMA/1xEVDO Rev. A (800/1900 MHz)
the HTC site for Verizon says 4G LTE:
EMEA: 800/900/1800/2600 MHz
Verizon: 700/AWS/1800/2600 MHz
Yet I still don't get any 4G
Sadly there is so much info and it's hard to follow it all. So please can someone explain what and how things actually work?
Why do I need to know all this? Cause I have a Verizon m8 and I'm using it in Europe and I can't get 4G - atm I'm using Insertcoin with ElementalX 8.0.5 kernel and everything is working on the phone aside 4G - I flashed various roms on it, never had ANY problem, aside small things that a Google search solved.
Anyone that can enlighten me? Any help would be appreciated.
Click to expand...
Click to collapse
Each model must have a different *antenna* configuration so that they are optimized to their respective regions. The *antenna* is separate from the actual radio you mentioned above. This is why there are so many models, which I thought I had explained in this thread: http://forum.xda-developers.com/showthread.php?t=2710720&page=5
Even if you could override what band the phone connected to, the performance would be abysmal. The fix for this would be to physically change the antenna. If you could do this on your own, you deserve an honorary degree in electrical engineering since antenna design isn’t the easiest thing in the world. Here’s where to start: http://en.wikipedia.org/wiki/Maxwell's_equations
Since there is a discrepancy between the Verizon and HTC spec sheets, I would do the following:
1.) Focus your research on seeing which one is correct by contacting HTC and Verizon.
2.) If Verizon’s is correct, you’re done. Romania’s carriers only transmit LTE on 1800 Mhz (band 3). Otherwise…
3.) If HTC’s sheet is correct, focus on why you can’t detect 1800 MHz. It must be something in your unlock method or Verizon really locked the hell out of the radios for some reason.
subhumanderelict said:
Each model must have a different *antenna* configuration so that they are optimized to their respective regions. The *antenna* is separate from the actual radio you mentioned above. This is why there are so many models, which I thought I had explained in this thread: http://forum.xda-developers.com/showthread.php?t=2710720&page=5
Even if you could override what band the phone connected to, the performance would be abysmal. The fix for this would be to physically change the antenna. If you could do this on your own, you deserve an honorary degree in electrical engineering since antenna design isn’t the easiest thing in the world. Here’s where to start: http://en.wikipedia.org/wiki/Maxwell's_equations
Since there is a discrepancy between the Verizon and HTC spec sheets, I would do the following:
1.) Focus your research on seeing which one is correct by contacting HTC and Verizon.
2.) If Verizon’s is correct, you’re done. Romania’s carriers only transmit LTE on 1800 Mhz (band 3). Otherwise…
3.) If HTC’s sheet is correct, focus on why you can’t detect 1800 MHz. It must be something in your unlock method or Verizon really locked the hell out of the radios for some reason.
Click to expand...
Click to collapse
Cheers mate, went to an actual engineer that handles repairs here in Romania for various brands and we both decided to make it our own personal project to make this happen a Verizon M8 turned into a Euro version one, ill report back with the results in about 2 weeks. Seems technically it can be done, just needs a some work. Thanks again for the reply though.
masucu said:
Cheers mate, went to an actual engineer that handles repairs here in Romania for various brands and we both decided to make it our own personal project to make this happen a Verizon M8 turned into a Euro version one, ill report back with the results in about 2 weeks. Seems technically it can be done, just needs a some work. Thanks again for the reply though.
Click to expand...
Click to collapse
That's actually kind of admirable! Seriously, I wish you luck; it would be really awesome if you succeeded. If you begin making progress, I would love to hear about it!
Just in case you didn't know about it, here is the teardown guide with a link to the tools you'd need to open up the M8:
http://www.ifixit.com/Teardown/HTC+One+(M8)+Teardown/23615
Sent from my Nexus 7 using Tapatalk
masucu said:
Cheers mate, went to an actual engineer that handles repairs here in Romania for various brands and we both decided to make it our own personal project to make this happen a Verizon M8 turned into a Euro version one, ill report back with the results in about 2 weeks. Seems technically it can be done, just needs a some work. Thanks again for the reply though.
Click to expand...
Click to collapse
Hi Macusu,
Just to remember, I believe the problem is not only related to the antenna itself, maybe there are other kind of locks since, as discussed in the other topic, Here in Brazil and I`m not being able to attach it to 4G 2600MHz (Even if the phone supports this frequency).
UntouchableS said:
Hi Macusu,
Just to remember, I believe the problem is not only related to the antenna itself, maybe there are other kind of locks since, as discussed in the other topic, Here in Brazil and I`m not being able to attach it to 4G 2600MHz (Even if the phone supports this frequency).
Click to expand...
Click to collapse
Thing is they are waiting for all the tools atm, I mean they don't yet have all the new kits for it, it should be arriving, and the engineer is actually a certified person being one that works in a certified HTC service, so once we get the entire .... kit, he will start working on it toghther with the software engineer and so on, hope that it will all sort out, i did get another phone in the mean time as well, but as i said i will be reporting back.
Thank
subhumanderelict said:
That's actually kind of admirable! Seriously, I wish you luck; it would be really awesome if you succeeded. If you begin making progress, I would love to hear about it!
Just in case you didn't know about it, here is the teardown guide with a link to the tools you'd need to open up the M8:
http://www.ifixit.com/Teardown/HTC+One+(M8)+Teardown/23615
Sent from my Nexus 7 using Tapatalk
Click to expand...
Click to collapse
Thanks for the guide, hopefully we wont need it but I will let you know how it goes.
masucu said:
Thanks for the guide, hopefully we wont need it but I will let you know how it goes.
Click to expand...
Click to collapse
Did you succeed?
MikkelJakobsen said:
Did you succeed?
Click to expand...
Click to collapse
I would like to know also...
sandm4n said:
I would like to know also...
Click to expand...
Click to collapse
So would I...I'm also from Brazil and brought the Verizon model because it is said to support the 2600 frequency. So frustrating
Planning to buy a new Mi4 from kijiji. Wondering whether it supports LTE bands in Canada? I;'m with telus
Short answer. No, not yet.
veladem said:
Short answer. No, not yet.
Click to expand...
Click to collapse
OK.Thanks
Is this a software issue or the LTE version is a different hardware in the future? In other words, if i buy the mi4 now, will i be able to get LTE when its available?
Sadly it seems to be a hardware limitation. Xiaomi was smart when they made the phone and only have it what it needed unlike some companies that overlook the small things and pay in the end.
yes it does not. as no opomart and other sites are selling FDD-LTE version which 1700/2100 works perfect with ATT / T-Mobile in US
4G:FDD-LTE 1800(B3)/2100(B1)MHz
This may seem far fetched but I'll ask anyway. Is there a way to change the hardware frequencies set within the phone to match the connectivity frequencies that's in your area?
shakim24 said:
This may seem far fetched but I'll ask anyway. Is there a way to change the hardware frequencies set within the phone to match the connectivity frequencies that's in your area?
Click to expand...
Click to collapse
In theory, the chip should support them. It would be a matter of writing the specific band values into your phones memory (NV). However, this pre-supposes that the phone could be modified on that level to begin with, which is doubtful.
You would need:
Unlock/root
Custom rom
Custom kernel
QPST (for editing)
QXDM (write enabling)
access to switch usb diagnostic mode
The majority of the work would be getting around MIUI and Qualcomm's restrictions they implement in their code. While not impossible, as you can see, the changes required aren't necessarily for the faint of heart. I suppose one upside would be the phone doesn't cost an arm and a leg, so if you wound up with a brick, you might have an easier time bouncing back from the loss.
kibmikey1 said:
In theory, the chip should support them. It would be a matter of writing the specific band values into your phones memory (NV). However, this pre-supposes that the phone could be modified on that level to begin with, which is doubtful.
You would need:
Unlock/root
Custom rom
Custom kernel
QPST (for editing)
QXDM (write enabling)
access to switch usb diagnostic mode
The majority of the work would be getting around MIUI and Qualcomm's restrictions they implement in their code. While not impossible, as you can see, the changes required aren't necessarily for the faint of heart. I suppose one upside would be the phone doesn't cost an arm and a leg, so if you wound up with a brick, you might have an easier time bouncing back from the loss.
Click to expand...
Click to collapse
Thanks for the insight bro. You really broke down into detail what was needed to be done. Was scrolling around and found this thread http://forum.xda-developers.com/showthread.php?t=2871269. Would like your opinion on it. It's for unlocking LTE as well.
I think they released the LTE-FDD version , seach for it!
already got one with LTE...its out already
Hi, I don't know how helpful this is for you but I have bought two from China for myself and my wife. Although I have not tried on the MIUI OS, I have flashed AOSP on to both phones and they both work at least on O2 and EE. I am receive 4G on my EE Mi4, however my wife does not have a 4G sim so can not confirm hers but she does receive 3G signals.
O2s 4G sim did not receive 4G signals on my Mi4 though (reason for me switching)
Hope this helps you
Only bands 1, 3, 41
Hello,
I recently purchased a note 5 duos SM-N9208 from Taiwan. I was led to believe that the device was unlocked GSM, but had EV-DO capabilities. My understanding was that this would work on Verizon's network, because it had both radio chips inside. I was told by Verizon that "there is no approved way" for them to get me up and running on their network. The tech made a point of saying there is a difference between approved, and no way. This leads me to believe that something can be done. I'm wondering if someone would be kind enough to help me out. Phone is running original Rom, unrooted, and is basically useless to me right now, as I'm desperately clinging on to my unlimited data with Verizon. Is it possible to root the device, and flash the modem with Verizon note 5 baseband info? Any help anyone can offer would be very much appreciated.
XDA Visitor said:
Hello,
I recently purchased a note 5 duos SM-N9208 from Taiwan. I was led to believe that the device was unlocked GSM, but had EV-DO capabilities. My understanding was that this would work on Verizon's network, because it had both radio chips inside. I was told by Verizon that "there is no approved way" for them to get me up and running on their network. The tech made a point of saying there is a difference between approved, and no way. This leads me to believe that something can be done. I'm wondering if someone would be kind enough to help me out. Phone is running original Rom, unrooted, and is basically useless to me right now, as I'm desperately clinging on to my unlimited data with Verizon. Is it possible to root the device, and flash the modem with Verizon note 5 baseband info? Any help anyone can offer would be very much appreciated.
Click to expand...
Click to collapse
Hi, and welcome to XDA!
When I looked up the specs on the Note 5 Duos, unfortunately it says nothing about CDMA. Having both "radio chips inside" can be taken two ways, in this case, this phone has the capability to handle two GSM carriers (and in this case, like most dual-sim phones, only the first SIM can do 3G/4G/LTE speeds).
Network Technology GSM / HSPA / LTE
2G bands GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands HSDPA 850 / 1900 / 2100
4G bands LTE
Speed HSPA 42.2/5.76 Mbps, LTE
GPRS Yes
EDGE Yes
Click to expand...
Click to collapse
It seems the only option (if you want to use this phone), is to join a GSM carrier like AT&T, T-Mobile, or one of their MVNO's (like MetroPCS).
Hope this helps.
joel.maxuel said:
Hi, and welcome to XDA!
It seems the only option (if you want to use this phone), is to join a GSM carrier like AT&T, T-Mobile, or one of their MVNO's (like MetroPCS).
Hope this helps.
Click to expand...
Click to collapse
Thank you, Joel! I'm excited to learn as much as possible from tgis forum. I actually changed over to T-Mobile, and have been good for the most part. The problem i'm having now is related to finding a way to flash the radio to all of their Rf's. I rooted, and attempted to flash the modem and bootloader from N920T, but it failed. I am still having a hard timr understanding why the identical hardware will not accept firmware from different model numbers. Again, very inexperienced, so it may be something very obvious i dont know about. If could offer any assistance, or provide and thread links that may be useful, i wpuld very grateful. Ive been searching nonstop, reading, and still cant seem to find a way.
Rockstah said:
Thank you, Joel! I'm excited to learn as much as possible from tgis forum. I actually changed over to T-Mobile, and have been good for the most part. The problem i'm having now is related to finding a way to flash the radio to all of their Rf's. I rooted, and attempted to flash the modem and bootloader from N920T, but it failed. I am still having a hard timr understanding why the identical hardware will not accept firmware from different model numbers. Again, very inexperienced, so it may be something very obvious i dont know about. If could offer any assistance, or provide and thread links that may be useful, i wpuld very grateful. Ive been searching nonstop, reading, and still cant seem to find a way.
Click to expand...
Click to collapse
Well, the hardware (particularly the modem) is not compatible, hance the failed install. You are lucky it cancelled out as you could have had worse problems on your hands.
The way i see it, you will have to wait for other regions for the Note 5 Duos to open up before you get flashing options. I would even question the need for that, if you get a decent range of bands with T-Mo (I am assuming you can get 4G).
If you want to explore further anyway, please check out this thread:
> Samsung Galaxy Note5 > Galaxy Note5 Q&A, Help & Troubleshooting > [Help Thread][Galaxy Note5] Ask Any Question, Noob Friendly
Hope this helps.
joel.maxuel said:
Hope this helps.
Click to expand...
Click to collapse
It did, thank you! I get decent service (including LTE) almost everywhere. Problem is, once I get to my.house, I go completely out of service. No call.I no text. It wouldn't be a big deal, but the Taiwanese phone doesn't have a way to turn WiFi calling.
Rockstah said:
It did, thank you! I get decent service (including LTE) almost everywhere. Problem is, once I get to my.house, I go completely out of service. No call.I no text. It wouldn't be a big deal, but the Taiwanese phone doesn't have a way to turn WiFi calling.
Click to expand...
Click to collapse
Aha. That and no sign of the 700mHz band (which may not be part of your phone anyway, not just hidden by the current firmware).
Since the firmware would need deep support of Wifi Calling (or VoLTE), as in more than just an App, I am afraid you will have to wait until the Duos releases into an area with that support in their firmware (and hope that, that area's firmware doesn't disable a frequency you use).
Makes scraping all the lead paint[*] off the house the more manageable task, doesn't it?
[*] I really don't know if your house does indeed have lead paint. I am assuming it's coated in something metal, or concrete, which avoids typically high frequency radio waves from entering. I never had that problem with my house (which may be strange, since it was built in the 40's), but maybe creating ways to boost the existing signal may be in order instead.