Database Info

[Q] From CDMA to GSM via Firmware Update ?

I've read that XOOM use the Radio chip Qualcomm MDM6600 ( the same of Iphone 4 ) and that is compatible with CDMA and also GSM network.
If it's true there's a way to set the actual CDMA Xoom for using GSM net with a cooked firmware ?

Not possible. Verizon's Xoom does not have GSM, only CDMA and LTE down the road.

LordLugard said:
Not possible. Verizon's Xoom does not have GSM, only CDMA and LTE down the road.
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I'm pretty sure the iFixit tear down indicated that the verizon xoom had gsm hardware inside that just wasnt activated.

mattkeane88 said:
I'm pretty sure the iFixit tear down indicated that the verizon xoom had gsm hardware inside that just wasnt activated.
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But isn't the LTE simcard bigger than a normal phone SIM card?

snowg said:
I've read that XOOM use the Radio chip Qualcomm MDM6600 ( the same of Iphone 4 ) and that is compatible with CDMA and also GSM network.
If it's true there's a way to set the actual CDMA Xoom for using GSM net with a cooked firmware ?
Click to expand...
Click to collapse
The chip is a world capable but the radio with it is cdma so it can't work on GSM networks unlessbit has a GSM radio. The chip probably just makes it easier for moto to produce xooms without having buy separate parts when GSM version comes out.
Sent from my Xoom using Tapatalk

socomdark said:
The chip is a world capable but the radio with it is cdma so it can't work on GSM networks unlessbit has a GSM radio. The chip probably just makes it easier for moto to produce xooms without having buy separate parts when GSM version comes out.
Sent from my Xoom using Tapatalk
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Hmmm. Pretty sure that's wrong. The chip is the actual modem - it is what *modulates*/*demodulates* digital signals to/from the radio. The "radio" is merely a power transmitter/receiver; the modem is what controls what the radio signals mean. As long as the radio is tuned for the right frequencies, it should work.

So, is it possible or not? Has anyone tried it?

I'd just buy a data dongle and have the best of both. CDMA -> GSM has brick written all over it.

[Q] Is there a way to enable 900/2100 3G bands?

Hi all
I just got this phone for use in Italy, and am now waiting for my unlock code to come through.
Meanwhile, and as the main question, I wonder if it ever will be a way to turn on the WCDMA 900 band that we use here (along with WCDMA 2100), since it's not supported out of the box, being an American phone.
I would like it to be a 900/2100 phone, instead of 850/1900/2100.
I'm sure the phone supports it (being much newer than my current Motorola Defy that's able to do it), it just has to be unlocked somewhere.
Any info is appreciated!
Thank you

thenext1 said:
Hi all
I just got this phone for use in Italy, and am now waiting for my unlock code to come through.
Meanwhile, and as the main question, I wonder if it ever will be a way to turn on the WCDMA 900 band that we use here (along with WCDMA 2100), since it's not supported out of the box, being an American phone.
I would like it to be a 900/2100 phone, instead of 850/1900/2100.
I'm sure the phone supports it (being much newer than my current Motorola Defy that's able to do it), it just has to be unlocked somewhere.
Any info is appreciated!
Thank you
Click to expand...
Click to collapse
Sorry, but that is not possible as the hardware does not have those radio antennas in the phone. This is ONLY a GSM/HSDPA+ phone not a WCDMA phone. There is not a way to change that since it is a hardware antenna change.

jimbridgman said:
Sorry, but that is not possible as the hardware does not have those radio antennas in the phone. This is ONLY a GSM/HSDPA+ phone not a WCDMA phone. There is not a way to change that since it is a hardware antenna change.
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As far as i know (pretty sure on this), all 3/3.5G is WCDMA. HSDPA(+) is WCDMA. WCDMA is just the name of a RF modulation, and 850, 900, 1900, 2100 are just the bands the protocol can run on.
In fact my question could just be translated to: as these settings are stored in the baseband rom, we need to flash an alternative baseband to enable those, or discover where they are set.
I guess a motorola phone similar enough to the A2 (i.e. same.hardware) should suffice as a "donor" phone for the baseband rom. May be an ipothetic european A2 of the future.
Has a phone like this been found yet?

thenext1 said:
As far as i know (pretty sure on this), all 3/3.5G is WCDMA. HSDPA(+) is WCDMA. WCDMA is just the name of a RF modulation, and 850, 900, 1900, 2100 are just the bands the protocol can run on.
In fact my question could just be translated to: as these settings are stored in the baseband rom, we need to flash an alternative baseband to enable those, or discover where they are set.
I guess a motorola phone similar enough to the A2 (i.e. same.hardware) should suffice as a "donor" phone for the baseband rom. May be an ipothetic european A2 of the future.
Has a phone like this been found yet?
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Click to collapse
The hardware on A2 does not support this, the antenna is not setup to capture these frequencies. Just because the baseband is in the rom does not mean that you can change the hardware.... Yes technically all 3G boils down to WCDMA or CDMA technology, but there are major operating differences between even the different spectrum in them. The issue you have is that the phone is not going to be able to capture those on the hardware layer. It is similar to trying to get am radio signals on an FM radio, with an FM antenna.

Well I hope you are wrong
I think (hope) motorola has put an universal antenna on the atrix 2, it'd be anti economic to do otherwise.
BTW, 850, 900 the antenna differences surely are minimal.
It sounds more like as a RF chipset limitation on the simultaneous bands used... like three of em. "Tri-band umts".
As with the good old gsm phones marketed as tri- or quad-band, like my v525, the actual bands used were depending on where you lived.
All of this, i hope...

Did you buy an MB865, or an ME865, as they have two totally different antennas. mostly we discuss the MB865 in here.... and I can tell you that there is no way to change the MB865, because it setup that way on purpose, and locked to AT&T's signals via the antenna and wireless chipset, by Motorola. The ME865 might be a better choice I think there are two versions of that one, one is the Chinese version and the other is more international.

ME865 it's for asia only. Motorola phones found over here follow the MB nomenclature. I have got an at&t MB865.
Anyway if a €300 phone (defy) can do that, I don't see why motorola would have chosen to spare on a $ .5 part on a €550 phone (euro price tag estimation), and have to redo a whole new pcb layout if the MB865 ever comes to the old world. Even taking into account the at&t exclusivity. It's anti economic for them.
Btw I don't want to be right at all cost, please don't misunderstand my words. ;-)

Also if you look at pdadb you will find two.models, mb865 and mb865a.
I don't know if they're both real or not, but they are identical specs-wise the only exception being the lack of wcdma900 band on the "a" version.
If such version actually comes to market, i guess a baseband transplantation could be done...

[Q] stuck on 2g...wont go 3g...why?

So I I've searched for an answer or a problem similar only to come out with no luck...do what's going on right now is that I got my inspire unlocked from att and came to India because I now have to live here because in going to college here..anyway its unlocked and I purchased a prepaid plan from company Vodafone.
So I've been running with 2g for some time now and now I just sick off it and need 3g so I can also use mylaptop and connect to hotspot. Anyway I've got 3g plan however my phone is constantly staying on EDGE....which is pretty annoying because its so slow and I paid a bit to get 3g upgrade. I've tried the *%*#4636#*#* phone setting and switched to GSM/cdma auto. Also got the smsc and updated. Also I set up a new APN suited for the company with no luck..still on 2B.C. So my question is..how do you switch on 3g on inspire? Haven't been able to find that also been searching it. My Android is still 2.2.1 if that makes any difference. I've also called they company and HTC to no success...so please help me out. How do I initiate 3g on my inspire?
apparently I just need the option to turn on 3g and the phone info thing won't work...keeps me on edge.
Thanks

If you have tried going to your settings then to you mobile network settings. There should be an option to use only 2g networks. If that is checked, then you need to uncheck that.

shugga101 said:
If you have tried going to your settings then to you mobile network settings. There should be an option to use only 2g networks. If that is checked, then you need to uncheck that.
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But that's the problem...I can't find that option.I go into mobile network settings and see data roaming...apn..network operators..and always on mobile network option. I've been trying o find a option to set which to put..for instance 3g only or 2 g only or 3g preferred..no avail. still have Droid 2.2.1 if that makes any difference..

Their is no way to get 3g. India uses a different frequency for 3g. No way to change it outside of getting a different phone with compatible bands

The Inspire radio utilizes the 850/1900 3G bands. India uses the 900/1800 bands for 3G. If you use the phone in a market where the 3G is on a different frequency than the radio in the phone, the best you'll get is Edge. This is hardware related. There is no setting you can change or ROM you can flash that will allow it to operate on 3G in your market.

So no absolute way of getting 3g on my inspire in India?

Nope
..........

Huh...so best bet would be to get a new phone? What should I look for in order for this problem not to happen again?

Get the correct version, The Desire HD.

Is it company -problem or a country -problem? If I switch providrs, will it work?

drsteez said:
Is it company -problem or a country -problem? If I switch providrs, will it work?
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Doubt it. Pretty much everyone except the US uses 900/1800, and att uses 850/1900 on it's phones (the inspire) - as previously stated this is in the phones hardware. So unless you can find a provider that uses 850/1900 for 3G your SOL - best bet is to get a new phone (DHD uses 900/1800 for 3G and is the same device as the Inspire, very minor differences)

Even i too have the same problem and I am from India.I have tried with my network operators many times but nothing works,i have to pay for 3g data and use 2g.Is there no fix for this issue?

omg, SEARCH. its what you agreed to do before posting.
ill put it simply for you. your inspire will never get 3g outside of the united states.
http://www.worldtimezone.com/gsm.html
if you are in purple, u need a desire hd, orange, you need an inspire.

Darunion said:
omg, SEARCH. its what you agreed to do before posting.
ill put it simply for you. your inspire will never get 3g outside of the united states.
http://www.worldtimezone.com/gsm.html
if you are in purple, u need a desire hd, orange, you need an inspire.
Click to expand...
Click to collapse
Oh god!!guess i need to buy another phone in order to use 3g in my country.

How to make a GSM Radio for Thunderbolt

Hello
It sucks being an european and to have a 4g/cdma phone because in my country (Romania) you dont have a cdma network
So as we all know the Thunderbolt has the same chipset as the Rezound so in theory it should be able to transform into a Global Phone.
My question is why didn't anyone do that and how i can make one myself if a dev dosent bother.
I feel it in my guts that this will work but i need some guidelines, or someone with actual knowledge to help me.

charris said:
Hello
It sucks being an european and to have a 4g/cdma phone because in my country (Romania) you dont have a cdma network
So as we all know the Thunderbolt has the same chipset as the Rezound so in theory it should be able to transform into a Global Phone.
My question is why didn't anyone do that and how i can make one myself if a dev dosent bother.
I feel it in my guts that this will work but i need some guidelines, or someone with actual knowledge to help me.
Click to expand...
Click to collapse
Thunderbolt doesn't have the hardware. Not possible.

and what hardware are you talking about?

Thunderbolt has a CDMA radio and an LTE radio. Global phones need a separate GSM radio to work in Europe. If it has an unlocked SIM, the Thunderbolt should work on any 700mhz band LTE network, but is incompatible with GSM on all levels.
Sent from my ADR6400L using Tapatalk

MDM 9600
Actually, the Thunderbolt has an MDM 9600 baseband chipset that supports Hspa and Hspa+ which is a technology that At&t and T-mobile uses for their data connections. So, I believe that if the LTE radio is backwards compatible with those frequencies of At&t or T-mobile that it might work. The thunderbolt has two antennas: one for strictly CDMA and the other for lte and backwards compatibility to gsm/hspa(+) from what I understand. From what I have read Verizon has just opted to not install the drivers to support the GSM/HSPA(+) side of things. That, and the MSM 8650 processor or other hardware in the Thunderbolt may not support it. Just because the modem supports GSM/HSPA(+) doesn't mean the phone will, but I do think that if someone really wanted to they could modify the thunderbolt to work on GSM. The may need more hardware, but I do not know.
I would post the link about the chipset I have, but sadly as a noob it will not let me.
P.S. Verizon allows you to log-in to your account and view the unlock code for the thunderbolts SIM yourself. You do not have to call them. I have not used another Carriers SIM in my Thunderbolt, but HAVE read about people who have in other threads. Verizon from what I understand and have read on other forums does not allow you to use USA SIM cards other than VERIZON'S own SIM. From what I have read, it only unlocks the phone to use foreign country SIMs only. From what I had read, once you use VERIZON'S SIM unlock procedures a NEW menu pops up in your network settings giving you the option to select to use GSM only. The same thread was speaking about the iphone 4s and the Thunderbolt and said that Verizon allows for both to be unlocked and used as World Phones. I will not know for sure until I see proof, but I do know that Verizon allows you to unlock the Thunderbolt's SIM to use on Foreign Networks.

The MDM9600 baseband definitely supports quad-band GSM. However, the RF transceiver in the Thunderbolt may or may not, and the power amplifiers definitely do not. You need all three in order for a mode & band to actually work on a device.

Not possible from a hardware point of view.

jiayu g2

Purchased a Jiayu g2 to play with so far the phone is very nice. It is suppose to work with 850/900/1900/2100mhz wcdma however I cannot get it to work on 3g with att I only get edge and have tried just about every apn setting I can. Does anyone else in the US have this phone working on 3g? I have it rooted. Funny never thought I would say this but it is a very nice phone.

eaa628 said:
Purchased a Jiayu g2 to play with so far the phone is very nice. It is suppose to work with 850/900/1900/2100mhz wcdma however I cannot get it to work on 3g with att I only get edge and have tried just about every apn setting I can. Does anyone else in the US have this phone working on 3g? I have it rooted. Funny never thought I would say this but it is a very nice phone.
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A lot of these Chinese phones state they're quadband GSM, but only have 2100 for 3G. Correct me if I am wrong.
Also, do you accidentally have GSM Only set?
Sent from my iPad using Tapatalk HD

KayxGee1 said:
A lot of these Chinese phones state they're quadband GSM, but only have 2100 for 3G. Correct me if I am wrong.
Also, do you accidentally have GSM Only set?
Sent from my iPad using Tapatalk HD
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here is the link for google translate.
http://translate.google.com/translate?hl=en&sl=zh-CN&tl=en&u=http://www.ejiayu.com/Product-5.html
this is the manufactures website and in the product parameters tab it shows 850/900/1900/2100 wcdma 3g and even in the engineermode menu it has them listed. i only paid 160 for it but to be honest it is a real nice phone and i was completely shocked at how well it was constructed. i even have it rooted. if there is anyone else out there that has this phone in the US or anywhere i would be interested to find out what bands you are on.

Take a look at the specshere
It shows 2100MHz for 3G
Don't be fooled by Engineering mode. It may show the options for specific MHz, but if the phone doesn't support it then the options pointless and misleading.
Sent from my iPad using Tapatalk HD

KayxGee1 said:
Take a look at the specshere
It shows 2100MHz for 3G
Don't be fooled by Engineering mode. It may show the options for specific MHz, but if the phone doesn't support it then the options pointless and misleading.
Sent from my iPad using Tapatalk HD
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i hear what you are saying. but the fact that the manufacture website shows the bands. i understand that the selling sites are all diff some show 2100 some show 850/2100. but for 160 it was worth a shot.

So no one else in north America has this phone?

Hi,
I have heard that MTK6575 SoC does support 3G on 850MHz/1900MHz. Two things might prevent it from working.
1. Your cellular provider maynot be providing 3G on both 850 and 1900 where you live. It could just be on 1900MHz where you live. Could you go to some other part of the city and test it?
2. I have read that the antennae required for 850/1900MHz is different from 2100MHz. So, even if the SoC supports it, the signal strength is not strong enough to make it work.
I would be very interested in your test results since I am thinking of buying one.

KayxGee1 said:
A lot of these Chinese phones state they're quadband GSM, but only have 2100 for 3G. Correct me if I am wrong.
Also, do you accidentally have GSM Only set?
Sent from my iPad using Tapatalk HD
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Click to collapse
Because China Unicom 3G is @ WCDMA 2100MHz.
Sent from my GT-S5570 using xda premium

eaa628 said:
Purchased a Jiayu g2 to play with so far the phone is very nice. It is suppose to work with 850/900/1900/2100mhz wcdma however I cannot get it to work on 3g with att I only get edge and have tried just about every apn setting I can. Does anyone else in the US have this phone working on 3g? I have it rooted. Funny never thought I would say this but it is a very nice phone.
Click to expand...
Click to collapse
Hi! Did you insert your 3G SIM on the SIM 1 slot? It is the only SIM slot capable of 3G (WCDMA). There are two slots in Jiayu G2 and only SIM 1 will work with 3G. SIM 2 is for GSM only.

toffzter said:
Hi! Did you insert your 3G SIM on the SIM 1 slot? It is the only SIM slot capable of 3G (WCDMA). There are two slots in Jiayu G2 and only SIM 1 will work with 3G. SIM 2 is for GSM only.
Click to expand...
Click to collapse
yes i did. i have even tried to get help from Ejiayu.com and no one replies. the spec on the their website show is is 850/900/1900/2100 mhz wdma and it shows in the engineering menu as well but i think it is a lie i can not get it to work at all in 3g. My sim works fine in my Pantech Burst 4g LTE. i have not given u completely but i need someone who has an in depth knowledge of this phone to help

3g access
eaa628 said:
Purchased a Jiayu g2 to play with so far the phone is very nice. It is suppose to work with 850/900/1900/2100mhz wcdma however I cannot get it to work on 3g with att I only get edge and have tried just about every apn setting I can. Does anyone else in the US have this phone working on 3g? I have it rooted. Funny never thought I would say this but it is a very nice phone.
Click to expand...
Click to collapse
u might try and see what the apn setting is
u might have to input the correct apn for your carrier