3g fixes for Defy, wcdma 850, 900, 1700, 1900, 2100Mhz - Defy Android Development

If you loose your 3g after flashing a rom or sbf, try to flash one of those zip to see if you get your 3g back (based on the wcdma(3g) freq your operator work on).
(Edit: in the previous sentence, "operator" was meant for the "original operator" of your phone. So in other words, select what matches your hardware, not your carrier. If you still have the original box, theres a label with the freqs on it.)
freq_F_CN_026-850-2100-signed.zip: 850, 2100MHz (ref)
freq_F_PL_342_131-900-2100-signed.zip: 900, 2100MHz
freq_F_UK_342_117-900-2100-signed.zip: 900, 2100MHz
freq_F_US_342_107-850-1700-2100-signed.zip: 850, 1700, 2100MHz
I've repacked as zip the files that seem to be resposible to gsm/WCDMA frequencies support on the Defy from several dumps (China, Poland, UK, US, all Froyo based). I'm not 100% sure though that it will work, but if it can help.
PLease report your success/failure here
Here is also another zip that is known to bring 3g back to Argentina users on Personal (Thanks gederico):
Fix_3g_850.1900Mhz-signed.zip: 850, 1900MHz
India & South East Asia Defy: http://www.mediafire.com/?k8dsbbq0ceodv86
Vodafone Spain (from Eclair rom, but seem to work for Froyo too): freq_E_ES_VF2.22.0-850-1700-2100-signed.zip

This will greatly improve flexibility to moving between roms for US users. Thanks adlx

Does use the customer recovery to flash, or via moto recovery?

Has anyone been able confirm that all these different variants of the Defy actually do have different hardware radios as well? Or are they all the same hardware with soft-controlled bands?
Example: If someone lives in an area where AT&T's coverage is 1900 MHz only and no 850 MHz, you shouldn't get 3G on a T-Mobile 850/1700/2100 Defy. What if you flash the 850/1900 3G files - do you get 3G now?
Do different country variants have a different FCC ID inside?

thanks.
ps. are you sure about cn850/2100?
china has cdma800, gsm900 and wcdma2100, so would make more sense to have 2100-only or 900/2100 since wcdma850 would never happen.

Mobile phones can have their 3G antennas optimized for certain frequencies. They can all work on all existing UMTS frequencies but it does suggest that different areas means different radios. Now that still doesn't mean that the radios themselves are different of course but at least it is something to look into.

cmstlist said:
Has anyone been able confirm that all these different variants of the Defy actually do have different hardware radios as well? Or are they all the same hardware with soft-controlled bands?
Example: If someone lives in an area where AT&T's coverage is 1900 MHz only and no 850 MHz, you shouldn't get 3G on a T-Mobile 850/1700/2100 Defy. What if you flash the 850/1900 3G files - do you get 3G now?
Do different country variants have a different FCC ID inside?
Click to expand...
Click to collapse
i can assure you that 3g radio must be different. unless it has a quad/quint-band 3g amplifier, which doesn't exist yet. intalling multiple amps while not using all of them sounds really stupid to me

AgentSmith said:
Mobile phones can have their 3G antennas optimized for certain frequencies. They can all work on all existing UMTS frequencies but it does suggest that different areas means different radios. Now that still doesn't mean that the radios themselves are different of course but at least it is something to look into.
Click to expand...
Click to collapse
the baseband chip should be the same just the rf part is different.

lackyking said:
Does use the customer recovery to flash, or via moto recovery?
Click to expand...
Click to collapse
You need to use Custom recovery
I wish I could forge Motorola signature ;-D

racca said:
ps. are you sure about cn850/2100?
china has cdma800, gsm900 and wcdma2100, so would make more sense to have 2100-only or 900/2100 since wcdma850 would never happen.
Click to expand...
Click to collapse
I'm not 100% sure. I looked for the information yesterday on Motorola's site, specs for Defy in the respective countries. Today I can't get to the ME525 spec page on Motorola.com(chinese). So I can't confirm.
EDIT: just found it:
频率 WCDMA: 850/2100 HSDPA 7.2 Mbps; GSM: 850/900/1800/1900 GPRS; Edge Class 12
source: http://www.motorola.com/Consumers/C...ervices/Mobile-Phones/ci.MOTO-ME525-CN-ZH.alt

adlx.xda said:
Here is also another zip that is known to bring 3g back to Argentina users on Personal (Thanks gederico):
Fix_3g_850.1900Mhz-signed.zip: 850, 1900MHz
Click to expand...
Click to collapse
Awesome! I now have a working Defy in the Movistar Argentina 3g/H network!
Even though out of the box, the unlocked Defy made in argentina did not work with Movistar Argentina, Froyo + this fix did work. Very weird bug.. but very cool fix!
NOW I'm happy about my defy!

U.S. T-mobile on 2.21 Chinese Retail Firmware, confirmed the 3G works with the patch!!!! tks

adlx.xda said:
...
freq_F_CN_026-850-2100-signed.zip: 850, 2100MHz (ref)
freq_F_PL_342_131-900-2100-signed.zip: 900, 2100MHz
freq_F_UK_342_117-900-2100-signed.zip: 900, 2100MHz
freq_F_US_342_107-850-1700-2100-signed.zip: 850, 1700, 2100MHz
Fix_3g_850.1900Mhz-signed.zip: 850, 1900MHz
Click to expand...
Click to collapse
Hey that sounds great and this was the last thing keeping me from upgrading to Froyo. I'm on Australian Telstra network (850) so are you saying I can use either of the US/CN or that last one...do you know which the Au Telstra network is based on or it doesn't matter?
Will wait to hear and then give it a try and report back...

adlx.xda said:
freq_F_PL_342_131-900-2100-signed.zip: 900, 2100MHz
freq_F_UK_342_117-900-2100-signed.zip: 900, 2100MHz
Click to expand...
Click to collapse
What are the differences between these two?
THX IN ADVANCE.

Hello I live in New Zealand and we have a network here called Telecom XT which uses 3G freq: 850 & 2100 mhz.
Unfortunately all Motorola Defy sold here have their freq specified as: 3G Network: HSDPA 900 / 2100
Does this mean that I can flash the "freq_F_CN_026-850-2100-signed.zip: 850, 2100MHz (ref)" file from OP to the 900/2100 phone and the phone will operate 3G on the 850/2100 freq?

Aittle off topic here but, the vibrant has AT&T 3g and T-Mobile 3g built in. You just have to activate the AT&T 3g radio through the secret settings.
Sent from my SGH-T959 using XDA App

Mentioned this already in the Adlxmod F4D thread but I needed the 3G fix to enable reception of 2G GSM 900 MHz on my Chinese/Asian made Defy. It only detected 1800 MHz networks. I used the Chinese 850/2100 fix for this. The UK 900/2100 fix had no result which means I will probably never be able to receive UMTS on 900 MHz with this phone. Not such a big deal though because as far as I know that frequency is quite rare if used at all somewhere for 3G connections. 2G works fine now but we better rename this thread to 2G/3G fix. Not sure about other 2G frequencies though. Isn't the Defy a quad band?

Excellent...today just flashed Froyo UK version and this fix worked a treat.
adlx.xda said:
If you loose your 3g after flashing a rom or sbf, try to flash one of those zip to see if you get your 3g back (based on the wcdma(3g) freq your operator work on).
freq_F_US_342_107-850-1700-2100-signed.zip: 850, 1700, 2100MHz
...
PLease report your success/failure here :-D
Click to expand...
Click to collapse
Success with the US 850/1700/2100 for my Australian Telstra (850Mhz) DEFY.

BTW, how is this different from *#*#4636#*#*?

adlx.xda said:
If you loose your 3g after flashing a rom or sbf, try to flash one of those zip to see if you get your 3g back (based on the wcdma(3g) freq your operator work on).
freq_F_CN_026-850-2100-signed.zip: 850, 2100MHz (ref)
freq_F_PL_342_131-900-2100-signed.zip: 900, 2100MHz
freq_F_UK_342_117-900-2100-signed.zip: 900, 2100MHz
freq_F_US_342_107-850-1700-2100-signed.zip: 850, 1700, 2100MHz
I've repacked as zip the files that seem to be resposible to gsm/WCDMA frequencies support on the Defy from several dumps (China, Poland, UK, US, all Froyo based). I'm not 100% sure though that it will work, but if it can help.
PLease report your success/failure here :-D
Here is also another zip that is known to bring 3g back to Argentina users on Personal (Thanks gederico):
Fix_3g_850.1900Mhz-signed.zip: 850, 1900MHz
Click to expand...
Click to collapse
noob question.. how do i install this? all i see is meta-inf and system folder

Related

accessing 3g

I have an unlocked touch cruise with t-mobile in the us, but don’t understand how, or if I can, use the 3g function for internet data access. My questions are as follows:
1. How do I find out if my phone is the European version or the US version (each has differing specs on accessing the 3g network).
2. If it is the US version, will I be able to access the 3g network on t-mobile or AT&T in the US?
3. If it is the European version, will I be able to access the 3g network.
4. How do I know whether my phone is accessing 3g or not?
5. Is there a software fix to allow me to use either the European version or us version to access 3G.
Thanks in advance for any help you can offer.
Dave
there's only one version of the Cruise out:
http://www.htc.com/www/product.aspx?id=798
These are the frequencies:
Network HSDPA/UMTS: 2100 MHz (Europe), 850/1900 MHz (USA)
HSDPA: Up to 384kbps for upload and 3.6Mbps for download
UMTS: Up to 384kbps for upload and download
GSM/GPRS/EDGE: Quad-band 850, 900, 1800, and 1900 MHz (The device will operate on frequencies available from the cellular network)
It's triband 3G. It is currently working on ATT 3G in the US. I don't know about TMobile is there 3G network up and running, and if so I don't remember what frequency that might be at.
The icons at the top point to what type of network E/G is Edge, while 3G/H is 3G.
You can go into the Phone Settings under Band and see some of the different frequency choices. You can force it to be on Edge/GSM there or Auto (which will pick up 3G if it's available).
3 g access
hambola said:
there's only one version of the Cruise out:
http://www.htc.com/www/product.aspx?id=798
These are the frequencies:
Network HSDPA/UMTS: 2100 MHz (Europe), 850/1900 MHz (USA)
HSDPA: Up to 384kbps for upload and 3.6Mbps for download
UMTS: Up to 384kbps for upload and download
GSM/GPRS/EDGE: Quad-band 850, 900, 1800, and 1900 MHz (The device will operate on frequencies available from the cellular network)
It's triband 3G. It is currently working on ATT 3G in the US. I don't know about TMobile is there 3G network up and running, and if so I don't remember what frequency that might be at.
The icons at the top point to what type of network E/G is Edge, while 3G/H is 3G.
You can go into the Phone Settings under Band and see some of the different frequency choices. You can force it to be on Edge/GSM there or Auto (which will pick up 3G if it's available).
Click to expand...
Click to collapse
As I understand it (for internet data access) the european version (as alluded to in your quote) works at Network frequency: HSDPA/UMTS: 2100 MHz (Europe), the American version at the frequencies: 850/1900 MHz (USA). If my phone is the european version, then it works at 2100, and will not access usa networks, unless there is a fix.
t-mobile is 3G in my area.
How to I access the "phone settings under band". I cannot find this on my phone.
Thanks
What I am saying is the device can function on all 3 frequencies listed on the specifications page. I believe the Tmobile 3G frequencies are 1700/2100. You might want to search on the forum and check it out for sure. If it is 1700 you are out of luck. Here are some threads discussing it.
http://forum.xda-developers.com/showthread.php?t=427700
http://forum.xda-developers.com/showthread.php?t=417437
http://forum.xda-developers.com/showthread.php?t=391339
http://forum.xda-developers.com/showthread.php?t=390449
Go to Start -> Settings -> Band tab. If you don't have it, there is a registry tweak that enables that tab.
3 g access
hambola said:
What I am saying is the device can function on all 3 frequencies listed on the specifications page. I believe the Tmobile 3G frequencies are 1700/2100. You might want to search on the forum and check it out for sure. If it is 1700 you are out of luck. Here are some threads discussing it.
http://forum.xda-developers.com/showthread.php?t=427700
http://forum.xda-developers.com/showthread.php?t=417437
http://forum.xda-developers.com/showthread.php?t=391339
http://forum.xda-developers.com/showthread.php?t=390449
Go to Start -> Settings -> Band tab. If you don't have it, there is a registry tweak that enables that tab.
Click to expand...
Click to collapse
hmmm, htc told me there were two versions that the european version does not have the capability to switch to the us frequencies, which the specs list as 850 / 1900, but is only using the 2100 frequency. I'm not sure htc tech support is always accurate.
However when I go to the band tab via comm manager, settings, phone, band, it shows me (found with your assistance) that I can select gsm (1900 + 850) + UMTS(1900+850). I assume I should use this setting rather then auto.
T-mobile claims they use the 1900 and 850 bands. I am still at Edge.
I have not had time to read the threads you listed, and will do that later today. Perhaps I will have more questions then, but for now, did I select the correct gsm settings?
Thanks,
Dave
3g access
ok, read the posts you mentioned.
More information about differing versions
from phonescoop.com:
Versions of touch cruise for different regions support different 3G frequency bands.Eurasian version is WCDMA 2100 only)
I assume that since the 850 and 1900 is listed in my setup program, I have the usa version, if phonescoop is correct about two versions.
Since t-mobile works on 1700 I assume I cannot have 3g with them.
Will I get 3g with AT&T?
i personally have never heard of 2 different versions of the Cruise. I have one presumably imported from the UK and works on 3G here.
Btw the Cruise manual says this:
FunctionalityHSDPA/UMTS: 2100MHz for Europe, 850/1900MHz for USA HSDPA: Up to 384kbps for upload and 3.6Mbps for download UMTS: Up to 384kbps for upload and download
GSM/GPRS/EDGE: Quad-band (850, 900, 1800, and 1900)
There is only one version of the Cruise.
Also a caveat about the bands available in the Band tab of the Phone Settings. I believe some options might be available in the drop down even though the phone doesn't support it. Best thing is to look at the phone specs.
Mmmm... My Polaris shows this:
Bodisson said:
Mmmm... My Polaris shows this:
Click to expand...
Click to collapse
Bodisson said:
Mmmm... My Polaris shows this:
Click to expand...
Click to collapse
Bodison,
My phone has the same features in your picture.
1. Hambola states
"Also a caveat about the bands available in the Band tab of the Phone Settings. I believe some options might be available in the drop down even though the phone doesn't support it. Best thing is to look at the phone specs."
suggesting what's in the picture may not be in the phone.
2. He also states:
a.
"FunctionalityHSDPA/UMTS: 2100MHz for Europe, 850/1900MHz for USA HSDPA: Up to 384kbps for upload and 3.6Mbps for download UMTS: Up to 384kbps for upload and download
GSM/GPRS/EDGE: Quad-band (850, 900, 1800, and 1900)
b.There is only one version of the Cruise."
The phone specs restate what he states in 2a.
A and B seem to contradict one another. Unless it means that the phone is capable of all the MHz frequencies mentioned (850, 1900, and 2100), and when used in Europe it accesses 2100 frequency, and in the US the other frequency. This is not clearly stated in the specs.
If the allusion to functionality does not mean that the frequency used depends on where the phone is used, then therefore there are two versions, with hsdpa/umts for europe (2100) and another for USA (850/1900). In any case, HTC (probably not the ulimate source of reliability) states that there are indeed two versions.
According to Hambola's reference to the caution that what is in the picture may not be in the phone, what is in the picture shows what is in the specs of the phone. He is therefore suggesting that what is in the specs of the phone (as shown in the picture) are not reliable. Not sure what the implications of this are.
I have been reading other posts about 3g with ATT. Is it safe to assume that (if there is one version of the phone, or I have the one that is able to access the US bands as shown in Bodison's picture), that I will be smokin when I switch to ATT in January when my contract runs out?
I am pretty sure there is only one version of the Cruise and it has those 3 bands listed for 3G. In fact there are guys on this forum that have the UK Orbit O2 running on the ATT 3G stateside.
3 g access
In any case, I tested my phone with a buddy's ATT sim card and was able to access 3G for browsing just fine.
I agree there is one version, though the HTC rep told me otherwise, he was probably....

3G Frequencies

Is there a way to change the 3G Frequencies on the G1 to support AT&T 3G network?
Nope, thats a hardware issue.
I thought it was possibly a software issue. If not, is there a way to change out the chip or the incompatable part to make it compatible?
card13 said:
I thought it was possibly a software issue. If not, is there a way to change out the chip or the incompatable part to make it compatible?
Click to expand...
Click to collapse
Nope...not going to work for many reasons.
been answered plenty plenty of times.
From what I can figure a hardware change may not be required with the correct radio but we dont know the right radio without the right hardware. lol I know that makes no sense but it makes as much sense as anyone can make of it thus far. When its possible I assure you I will be among the first to do it. Although Im not ready to try installing a new radio without first acquiring a backup phone but if I do Im gonna give it a try and maybe have better luck than the last guy to try.
What about a mini-usb attachment that can receive atnt signals?
I am sure with that and the right software manipulation it could work.
sjbayer3 said:
What about a mini-usb attachment that can receive atnt signals?
I am sure with that and the right software manipulation it could work.
Click to expand...
Click to collapse
While it sounds great in theory I doubt anyone would put forth the resources for such a limited market.
You would be best off getting android to work on existing AT&T hardware.
in order to do it we would need hardware which would plug in the bottom and software to tell the phone to use the signal from the attachment.
while there wouldnt be millions in the market i guarantee there are hundreds.
if anyone wants to think about it i dont mind making 50 of em and selling for cost. i have some hook ups in the engineering field i work in
ok, my question is... Europe 3g is diff than tmob usa 3g, but is tmob europe the same 3g setup as US? and if europe 3g is same as tmob europe 3g, is att US 3g same as europe 3g. so if tmob europe is same as europe 3g then a europe g1 should work on att US 3g. am i coming thru clear or am i jumping all over?
Shaggy
Shagman68 said:
ok, my question is... Europe 3g is diff than tmob usa 3g, but is tmob europe the same 3g setup as US? and if europe 3g is same as tmob europe 3g, is att US 3g same as europe 3g. so if tmob europe is same as europe 3g then a europe g1 should work on att US 3g. am i coming thru clear or am i jumping all over?
Shaggy
Click to expand...
Click to collapse
The American G1 has 3G support for HSDPA 1700 MHz & 2100 MHz, both bands I believe are used by T-Mobile. In Europe I believe they use only 2100 MHz band for 3G.
AT&T on the other hand uses 850 and 1900 MHz HSDPA
The phone has the capability for 2G at 850 and 1900 MHz, so technically it can be used on their network, just not at 3G speeds.
Although technically it's possible to design a Phase-Locked Loop to operate at a variable frequency and to be tuned with jumpers or something, it's probably cheaper for them or they might be subsidized to make phones so that they are exclusive for one network in the US.
To me the ideal is more about standardizing the protocols and the frequencies used for all companies, and having all bands available for traffic. But at least in the short-term that's not really good for business and so probably won't happen for a while.
This is all based entirely on a limited amount of research and my opinion, take it for what it's worth.
Europe uses 1900/2100 in a pair (1900 is the uplink, 2100 is the downlink). (source)
Most phones produced these days are tri or quad band and can work (almost) anywhere.. I'm surprised the G1 isn't.
Shagman68 said:
ok, my question is... Europe 3g is diff than tmob usa 3g, but is tmob europe the same 3g setup as US? and if europe 3g is same as tmob europe 3g, is att US 3g same as europe 3g. so if tmob europe is same as europe 3g then a europe g1 should work on att US 3g. am i coming thru clear or am i jumping all over?
Shaggy
Click to expand...
Click to collapse
TonyHoyle said:
Europe uses 1900/2100 in a pair (1900 is the uplink, 2100 is the downlink). (source)
Most phones produced these days are tri or quad band and can work (almost) anywhere.. I'm surprised the G1 isn't.
Click to expand...
Click to collapse
*sigh*.
Folks, you need to learn about UMTS bands before complaining about that the G1 or any other phone can't do this or that when it certainly can.
The G1 is a 3g worldphone. It works on the US 1700 AWS network (UMTS Band IV) and works on the world's 2100 network (UMTS Band I). ATT uses the 1900 Band (UMTS Band II).
Apparently the common names for these networks is being confused with the actual operating frequencies because they don't upload and download on the same frequencies. The 1900 band is not the same as the 2100 band, even though the 2100 band (UMTS Band I) uploads in the 1900mhz frequency and downloads at the 2100mhz frequency range. The 1900 Band (UMTS Band II) uploads on the upper half of the 1800mhz and downloads on the 1900mhz frequency range. UMTS Band II uploads on the frequencies that UMTS Band I downloads.
These bands separate.
TMO 3g band is different from ATT 3g band which is also different from EU 3g band.
The 1700 band (UMTS band IV) is actually made up of 2 frequency ranges like the other bands I and II are: 1700mhz and 2100mhz. In fact, the 2100mhz download range for UMTS Band IV is within the same frequencies used for the Band I download range, theoretically making it cheaper/easier for manufacturers who make Band I phones to "support" UMTS Band IV phone production.
Most phones produced today are NOT "tri or quad-band" 3g phones. In fact, I have yet to find a quad-band 3g phone. If quad-band 3g phones were made, they would be very likely to support the T-Mobile 3g network, because it's the 4th largest UMTS band type (behind Band I, II, and V). I would be very shocked to find a phone which was 2100/1900/900/850 instead of 2100/1900/1700/850.
And the G1 is a worldphone. It works just fine on UMTS in Europe. It is a band I and band IV device.
read these 2 links:
http://www.htc.com/www/product/g1/specification.html
http://en.wikipedia.org/wiki/UMTS_frequency_bands#UMTS-FDD
So to clarify, when you see a list of support bands, this is what you should interpret from those advertised bands:
2100 Band = UMTS Band I (The entire world outside of North America)
1900 Band = UMTS Band II (The Americas, ATT)
1700 Band = UMTS Band IV (The Americas, TMO)
900 Band = UMTS Band VIII (Australia)
850 Band = UMTS Band V (The Americas, ATT)
Outside of North America, the 2100 band is almost universally deployed, even where the 850,900,1700 or 1900 band is deployed.

[Q] Problem with 3G Band

Last year I bought my Defy in Germany (Vodafone) and over there the 3G connection worked perfectly fine, but I live in Colombia (South America) and my local operator (COMCEL) works only with 2G (GSM) 850/1900 Mhz and 3G 850 Mhz bands. According to the Vodafone Defy's technical features the phone is quadband (850/900/1800/1900 Mhz) but when I turn on the 3G connection in my Defy, the phone loses connection, apparently it only works on 2G bands (data and voice connectios work perfect but extremely slow!). I'd like to know if there's any problem with my Defy, or maybe I should install an other ROM or some patch or plugin to make the 3G connection work?
Thanks for your help!
There's a fix flashable zip in this section for whatever areas your in..
Sent from my MB525 using Tapatalk
sgtmedeiros said:
There's a fix flashable zip in this section for whatever areas your in..
Sent from my MB525 using Tapatalk
Click to expand...
Click to collapse
These aren't area fixes, they are fixes for phones from certain areas. A European Defy simply doesn't support 3G 850 MHz so that is a no go in Colombia. Sorry for the TS but that's just the way it is.
The European Defy is indeed quad band for GSM. UMTS is double band at 900 and 2100 MHz.

[Q] No 3G, only EDGE? (Claro RJ)

So, I´m at Claro (Rio de Janeiro) and I never get a 3G connection, only EDGE.
The specs says Quad-band GSM: 850, 900, 1800, 1900 Tri-band HSPA: 900, 2100, 1700 HSPA type: HSDPA (7.2Mbps) HSUPA (5.76Mbps), and Claro works in 850M and 2100.
So, am I missing some setting here, or is it a radio restriction? If it´s the radio, does anyone knows of a flashable radio I could use?
Thanks in advance!
Tri-band HSPA: 900, 2100, 1700
Click to expand...
Click to collapse
see that?
no 850 on 3G
most 850 networks does not use 2100 for 3G
Oh, crap. Time to change operator, then.
Thanks, AllGamer!
EDIT: Strange, seems like the Defy have same frequencies, and 3G works with Claro...
EDIT (again): Talked to the carrier, suddenly started working in 3G. Man, I´m getting tired of all this misinformation from my carrier =/
I'm about to ask someone that's currently in the US to get this phone for me, but I'm worried.
I use Vivo, and I live in São Paulo.
Will it work with 3G here?
If not, is there anything I can run on the phone to make it work with the 3G Vivo has?
Edit: Ok, so I found out that my Carrier uses GSM: 850, 900, 1800 and 1900Mhz
3G:850 and 2100Mh.
I don't get all the quad-band, tri-band lingo though, so I'm not sure if it's going to work with 3G here.
Help?
gasparzim said:
Oh, crap. Time to change operator, then.
Thanks, AllGamer!
EDIT: Strange, seems like the Defy have same frequencies, and 3G works with Claro...
EDIT (again): Talked to the carrier, suddenly started working in 3G. Man, I´m getting tired of all this misinformation from my carrier =/
Click to expand...
Click to collapse
find out what frecuency they use for 3G
and make sure the APN is correct
if your information is correct, then it would most likely not work on 3G
EonHawk said:
I'm about to ask someone that's currently in the US to get this phone for me, but I'm worried.
I use Vivo, and I live in São Paulo.
Will it work with 3G here?
If not, is there anything I can run on the phone to make it work with the 3G Vivo has?
Edit: Ok, so I found out that my Carrier uses GSM: 850, 900, 1800 and 1900Mhz
3G:850 and 2100Mh.
I don't get all the quad-band, tri-band lingo though, so I'm not sure if it's going to work with 3G here.
Help?
Click to expand...
Click to collapse
EonHawk said:
I'm about to ask someone that's currently in the US to get this phone for me, but I'm worried.
I use Vivo, and I live in São Paulo.
Will it work with 3G here?
If not, is there anything I can run on the phone to make it work with the 3G Vivo has?
Edit: Ok, so I found out that my Carrier uses GSM: 850, 900, 1800 and 1900Mhz
3G:850 and 2100Mh.
I don't get all the quad-band, tri-band lingo though, so I'm not sure if it's going to work with 3G here.
Help?
Click to expand...
Click to collapse
Nexus S used 2100 band so it does work in São Paulo, I have tested it and it works fine.
Sent from my Nexus S
fabio008 said:
Nexus S used 2100 band so it does work in São Paulo, I have tested it and it works fine.
Sent from my Nexus S
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Are you referring to Vivo, though?
Yeah, I've been calling Vivo's Tech Support for the past couple of days, and each time, someone tells me something different. I've come to the conclusion that...Vivo sucks (or that their support is terribly handicapped).
gasparzim said:
So, I´m at Claro (Rio de Janeiro) and I never get a 3G connection, only EDGE.
The specs says Quad-band GSM: 850, 900, 1800, 1900 Tri-band HSPA: 900, 2100, 1700 HSPA type: HSDPA (7.2Mbps) HSUPA (5.76Mbps), and Claro works in 850M and 2100.
So, am I missing some setting here, or is it a radio restriction? If it´s the radio, does anyone knows of a flashable radio I could use?
Thanks in advance!
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Brother! Follow this How'to below. I'm sure it will help you. My friend here in SP uses Claro and used to have the same issue.
http://theunlockr.com/2010/01/20/nexus-one-simple-3g-fix/
EonHawk said:
Are you referring to Vivo, though?
Yeah, I've been calling Vivo's Tech Support for the past couple of days, and each time, someone tells me something different. I've come to the conclusion that...Vivo sucks (or that their support is terribly handicapped).
Click to expand...
Click to collapse
Oh noes... I was thinking about leaving Claro and go to Vivo, but I am not sure anymore.
Last time I try to ask for help, tech support kept asking me "what´s your phone model?" Looks like they don´t even know about the Nexus S.
Well, at least Vivo has a better data plan.
First: sorry about the "revival", but I have almost the same problem.
I'm using an Captivate, radio specs: 3G: HSDPA 850 / 1900 / 2100
My operator (TIM) uses 2100 in my city, excellent until now!
But, I'm stuck in EDGE, can't get it to connect any faster. We have other phones here got from England, Ireland and USA, all of them support 2100 and 3G works perfectly, but not this Captivate.
Only thing is that my device runs MIUI 2.3.7, but even flashed a new modem (now using UGKG3) but remains the same thing.
Any help? Thanks!!
Edit:
Ok, now it gets VERY weird! I tried another operator chip (VIVO), that also operates at 2100 in my area and: HSDPA enable at first!
Got back my chip and back to EDGE, this same chip get 3G on a Samsung Jet, Samsung Galaxy Mini and a Samsung i550.
How is that?

[Q] Best Modem for Skyrocket in China

I'll be traveling to Beijing in a few weeks and have an unlocked Skyrocket. I will probably get a prepaid card from China Mobile.
I was checking out this thread:
http://forum.xda-developers.com/showthread.php?t=1426001
And was wondering if anyone had a recommendation as far as a better modem to flash to improve things while I'm there (and possibly get 3G speeds) or if the stock modem (I727UCKJ2) would be fine?
It seems that 3G in China requires UMTS 2100. From the Amazon description of the Skyrocket it seems like it might be capable:
It runs on AT&T's 4G LTE and HSPA+ networks (850/1900 MHz; HSPA+/HSDPA/UMTS) plus international 2100 MHz 3G networks. It's also a quad-band GSM phone (850/900/1800/1900 MHz GPRS/EDGE).
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When I go to service mode on the phone under WCDMA Band Selection I see: 850, 900, 1700,1900, and IMT2000, but no 2100.
Does anyone know if this is going to work in China as is, or if I need to tweak the modem to get it to work, or I'm just barking up the wrong tree completely?
Thanks,
Jeff

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