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

adlx.xda · Feb 6, 2011

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

chaihg · Feb 7, 2011

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

lackyking · Feb 7, 2011

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

cmstlist · Feb 7, 2011

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?

racca · Feb 7, 2011

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.

AgentSmith · Feb 7, 2011

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.

racca · Feb 7, 2011

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?

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

racca · Feb 7, 2011

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.

the baseband chip should be the same just the rf part is different.

adlx.xda · Feb 7, 2011

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

You need to use Custom recovery

I wish I could forge Motorola signature ;-D

adlx.xda · Feb 7, 2011

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.

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

martin.flory · Feb 7, 2011

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

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!

no clue · Feb 8, 2011

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

pjcons · Feb 8, 2011

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

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...

999phonebug · Feb 8, 2011

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

What are the differences between these two?

THX IN ADVANCE.

LevitateJay · Feb 9, 2011

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?

deviusdragger · Feb 9, 2011

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

AgentSmith · Feb 9, 2011

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?

pjcons · Feb 12, 2011

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

Success with the US 850/1700/2100 for my Australian Telstra (850Mhz) DEFY.

999phonebug · Feb 12, 2011

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

nhuloan · Feb 15, 2011

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

noob question.. how do i install this? all i see is meta-inf and system folder

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

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