[Q] How to change the radio band to work on 3G in 900Hz? - AT&T Samsung Galaxy S II Skyrocket SGH-I727

Greetings, I am new to the forum.
**** I searched every post, but I have not found a solution, or not understood enough to solve my problem. Who is next, and if someone can tell me if this is possible:
I live in Venezuela, and I have a Samsung Galaxy S II Skyrocket (AT & T), which is only working with EDGE because my carrier (DIGITEL), uses the 900 band for 3G, and as you should know this is not the using my phone.
Is there any way I can change this to work with my operator, was thinking about flashing CM9, and that radio band recommended me to use.
I have followed some tutorials on this forum, but no positive results, such as the total signal loss and now has an echo when I make the phone calls.
http://forum.xda-developers.com/showthread.php?t=1384865
http://forum.xda-developers.com/showthread.php?t=1785999
thanks in advance for the help. Excuse my English.

This forum is for the at&t i777 version of the phone. Please search and post in the correct forum.
Sent from Team Pirate Headquarters.

First post FAIL!

Rart3001 said:
Greetings, I am new to the forum.
**** I searched every post, but I have not found a solution, or not understood enough to solve my problem. Who is next, and if someone can tell me if this is possible:
I live in Venezuela, and I have a Samsung Galaxy S II Skyrocket (AT & T), which is only working with EDGE because my carrier (DIGITEL), uses the 900 band for 3G, and as you should know this is not the using my phone.
Is there any way I can change this to work with my operator, was thinking about flashing CM9, and that radio band recommended me to use.
I have followed some tutorials on this forum, but no positive results, such as the total signal loss and now has an echo when I make the phone calls.
http://forum.xda-developers.com/showthread.php?t=1384865
http://forum.xda-developers.com/showthread.php?t=1785999
thanks in advance for the help. Excuse my English.
Click to expand...
Click to collapse
Had you spent a little longer searching you would have found that 3g bands are hardware dependent. To change them you would have to replace the antenna and them decode the device to work on this band. Not very easy. Your better off getting a different device.
Thread closed
Sent from my SGH-I777 using Tapatalk 2

Related

Any way to enable 3G on the Touch Pro from India?

Hi everyone,
This is my first post here after joining this forum. I recently bought an HTC Touch Pro in India after alot of review. Sadly after buying the unit I realized HTC decided not to include 3G in the Indian version. I bought it blindly thinking they wouldn't be any discrepancy in the TP review units on sites such as gsmarena and infosync world but the TP box proved otherwise.
Now I study in the US and was hoping to use the 3G connection offered by T-mobile otherwise i'll resort to EDGE. My question is whether or not my TP actually has a 3G chipset which is disabled by HTC and can be enabled somehow or have they not installed one?
Thank you
3g
you could unlock the spl and install a custom rom (or a htc WWE stock rom). After installing the custom rom if ur phone has the 3g chip it will start working. Mostly the network and 3g are part of a single chip. So most probably 3g will start working after installing the custom rom. good luck.
Hey! Thanks for the quick reply!
I'm new to flashing ROM and the other procedures you have mentioned. Is it possible for you to direct me a bit more as to exactly how am I supposed to go about what you said?
Thank you
psycho89 said:
Hey! Thanks for the quick reply!
I'm new to flashing ROM and the other procedures you have mentioned. Is it possible for you to direct me a bit more as to exactly how am I supposed to go about what you said?
Thank you
Click to expand...
Click to collapse
Do you have a HTC Touch Pro aka Raphael that comes from Europe? If so, no 3G as of yet. Actually, right now only way you'll get 3G is with the Fuze.
I ask because I am not familiar with India's phone infrastructure, providers,etc
Now some background of what's going on so you'll know if and why you won't have 3G:
HTC touch pro specs
Notice that HSDPA is only available on these frequencies:
Europe/Asia: 900/2100 MHz
For AT&T 3G frequencies are 850/1900 and for T-Mobile, I read they use 1700 and 2100mhz but I suggest you look around a bit more.
Finally, here'es THE thread about enabling the missing bands(frequencies) on the Touch Pro, some people are still working on it, progress has been made, but so far, no 3G in North America.
http://forum.xda-developers.com/showthread.php?t=420865
Ps.: Flashing to a new ROM is still a good idea, some of the ROMs in this forum will give a vert healthy performance boost to your phone!
I suggest you read this forum for a few days and especially this post
http://forum.xda-developers.com/showthread.php?t=448008
and get comfortable with the concepts, it's really easy and simple once you understand the basics.
Enjoy!
Hi labbby!
Thanks for the reply and info. I'm not sure if my TP came from europe not or. Just says tri-band on mine. Apart from that I'll look into flashing my ROM.
Thanks again!

SGH-T727 has no high speed data!? Help please?

Hello. This may be a redundent problem and question thats been asked many times im sure. My in advance apoligies for I am new to this whole rooting and reprogramming with modified os andriod systems. I have a problem and if anyone can help or guide me in the proper directions, I would so greatly appreciate it. Let me first share what I have and what my issue is. Then any info you mau have I would greatly appreciate it. Thanks.
I have a att version samsung galaxy s2 Sgh-t727 skyrocket. I have factory unlocked it to use with my current local carrier Cincinnati Bell. It works with cin bell just fine in making calls. However, at best the internet is only E or G. I do have all apn settings correct. I think the problem is in the radio frequency there is a difference between the 2 service providers on thier technology way of connecting to 3 and 4g. Cinbell uses umts, wcdma, hspa and hsdpa with a bandwith of 1700 and 2100 mghz frequency connections. This att uses lte I believe. So since theres no lte service in my area offered, I believe the phone reverts to Edge gsm at best. Cincinnati Bell uses the same technology as T-Mobile as ive been told and they share the same towers in this region of ohio Kentucky and indiana. So with that said, is it possible this particular phone has all the proper connections and bandwiths but is locked to the original provider of the phone....being att in this case? And if it dont have all the proper frequency and bandwiths, then how do I flash it with T-Mobile radio signals and network technology so it can run using 3 and 4g speeds? Any help I would greatly appreciate. Thanks so much. Everyone have a great weekend.
Sent from my SGH-T999 using xda app-developers app
start here
|READ THIS B4 POSTING | THE MOST Common Questions Answered HERE |
I am running the stock updated jellybean 4.1 version. Hope that info helps. Thanks again.
Sent from my SGH-T999 using xda app-developers app
lwaldenjr said:
I am running the stock updated jellybean 4.1 version. Hope that info helps. Thanks again.
Sent from my SGH-T999 using xda app-developers app
Click to expand...
Click to collapse
I'd try some T-Mobile radios. See vincom's stickies.
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
Search for the following radios and try them :
I757MUGMC5
UVMC6
UVMB1
Try one after the other... Flash in cwm or twrp recoveries.Wipe cache after each radio flash and see what radio can give you the best results..
Wait on each radio for some time (let's say 15min) after reboot to settle down...
Double check your APN settings..
Your issue is exactly like somebody wants to use skyrocket on T-Mobile.. There's is big thread discussing that matter in the general section...
Good luck..
PS:Sometimes using a T-Mobile T989 rom probably would give you higher rates of success, especially your issue is the AWS bands in HSPA+
PS2:As a disclaimer , you're the only one who's responsible for any damages that may happen to your device , especially when dealing with radio and kernel , and as a side note , why Cincci Bell ? unless you have a strong reason (price,reception,etc..) I would think about T mobile itself , they are doing a good job in both expanding their LTE network as well as expanding their refamred 1900MHz spectrum which makes usage of stock AT&T radios possible , I use my Skyrocket on T mobile and get their LTE reception on UCMC1 without the hassle of trying radios and what not ...

[Q] How can the 4G frequency be changed from 1700mhz to 1800 mhz

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

[Completed] Noob in need of radio/modem flashing information

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.

Help with adding LTE band 2 (1900 mhz)

Hi guys,
So... basically I want to add the LTE band 2 (1900 mhz) since my carrier here in México (Movistar) uses that band. ( I cannot change my carrier since the sim belongs to my employer )
The long story is this:
For a long time I've been trying to get the LTE signal working on my M8 testing several ROMs, but I just discovered (a couple of weeks ago) that this won't be possible since the verizon M8 doesn't have that band enabled.
Based on that, I gave up and installed the NuSenSeveN ROM to check if it was possible to use another carrier's LTE service here in México. So... with this ROM, I was able to use Telcel's LTE band (4 - 1700 mhz) just by using one of this carrier's chip. With that in mind I'm thinking on selling this device to someone who has a contract with this carrier and buy a new phone that have my carrier's LTE band enabled.
But... something in my mind wanted to do the last attempt and searching I found the post about adding disabled bands to all Qualcomm devices, and optimistic as my mind is... here I am thinking that it may be possible to keep my m8 and being able to use my carrier's LTE service!!!
I know this is no easy task and that I should do everything I can to try to test this on my own, but since I found the post for adding bands for Qualcomm devices I've read almost the whole thread.. in almost a week now, and I haven't been able to do any progress on the matter so... I really hope someone with expertise can help me.
I also know no one here helps thinking about money but I know I'm not asking for something easy, probably its not even possible, ( I also know there are no guaranties that anything will work for sure)... so I'm willing to donnate for the help. I don't know if it's is forbidden to ask for this in xda, if it is, please let me know, I'll delete this post and restrain myself from doing the same in the future.
So, I'll explain the situation,
I've reviewed the main post about this matter here in xda,
http://forum.xda-developers.com/cro...ad-progress-please-leave-im-updating-t2871269
And similar posts like these:
http://forum.xda-developers.com/verizon-htc-one-m8/general/lte-band-7-2600mhz-finally-guide-t2992523
http://forum.xda-developers.com/verizon-htc-one-m8/help/assistant-unlocking-lte-bands-t3213956
Basically from those posts I was trying to follow @regspy steps.. but I've had troubles with adb (I'm on Windows 10) and I've tried to install several drivers but all I've tried keeps giving me the "offline" result with the "adb devices" command, so I'm not able to go any further.
And here I am hoping someone can help me trough Team Viewer, if someone can help me please tell me, or if someone knows for sure this is not possible it'll also help me to quit on this task haha.
Thanks in advance.
PS. This is my M8's current state
This is my bootloader screen:
https://drive.google.com/file/d/0BwRKcAC_V-OsTEw0d2ZmYml4b1E/view?usp=sharing
Also, I'm currently running the next ROM:
NuSenSeveN_Marshmallow_M8vzw_v2.0_0102216

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