I just stumbled across this old thread.
http://forum.xda-developers.com/showthread.php?t=265606
Is the possibility of this true?? Has anyone tried to do work on the Radio ROM to bring in Quad band? I would pay to have 850 available for my phone.
Comments?
Has anyone tried an Athena radio on the Universal ( I presume yes, still looking through the forums ). And what about the HTC Sable? They both use the same CPU and the Sable in particular has comparable ROM sizes.
Quote from one of the links:
QUALCOMM's MSM6250 chipset solution helps enable worldwide roaming for
WCDMA (UMTS) terminals. The MSM6250 system solution supports dual-mode, quad-
band GSM transceiver operations [GSM 850, GSM 900, Digital Cellular System
(DCS) 1800, and GSM 1900] and WCDMA (UMTS) transmit operations for 800 MHz,
1900 MHz and 2100 MHz.
Shouldn't the Universal therefore be able to do 850 with a change to the radio ROM? Do the HTC Sable and Athena use the same chipset?
Can anyone help us?
It would be great to have a 850 band for my SPVm5000. Hope anybody can answer your question. Seems that since this phone was only released for europe and not USA the quadband was not open
I have an Australian released unlocked touch pro, and made a huge mistake- my network Telstra nextg is on 850 UMTS, and the released model is designed only to support 900-2100 UMTS. Does anyone know if i upgrade the radio as posted to quad band via flashing the rom if it will then allow my phone to access the 850 UMTS range or has the Ausie touch Pro been produced differently and may have a different antena and or chipset, which wont allow me to change it? If this is the case my phone is RS, i can still get edge though. Help 20times over.:
I bought my Diamond in HK-Asia where the 3G HSDPA is 2100Mhz. But I would like use it in Brazil where the 3G HSDPA is 850Mhz. Could I load any USA Radio (where 3G is 850Mhz) on my device to convert from 2100Mhz to 850Mhz HSDPA? Will it works?
As i think with the Radio roms as they are Quad band it should work, if its not an CDMA diam
Edit: Okay, sorry just speculation !
no you will not get 3g speed, only edge.
T-mobile touch pro2 has 3G in 2100 Mhz band. Does this mean that it will get 3G in europe, where networks support the 2100 umts?
i have read this phone has the AWS system (1700 + 2100 bands for ul/dl) but does it also have the "regular" 2100Mhz band for 3g in europe and asia?
In the specifications of the tmo tp2 it says it has that band so my guess is that it will work fine in Europe.
yes it worked for me i can confirm that
OK...the Desire Z only supports 900 and 2100 MHz which is European and Asian 3G bands. Is there any way that it can be made to operate on any North American 3G bands (like 850, 1700/2100, or 1900) or the issue is entirely hardware related, in which case nothing can be done. I should note that the phone has already been upgraded to 2.3.3 so the rooting options are rather limited.
Any contribution will be highly appreciated!!!
Its hardware limited to the bands you have. My understanding (correct me if I'm wrong) is that with that device (if it is unlocked) you will be able to use a T-mobile SIM to get 3G in the US. I'm not 100% sure with this though, as I don't think the DZ has 1700mhz which is needed for T-mobile.
You don't have the correct bands for AT&T 3G. There is a Canadian version of the DZ that will work on AT&T in the US on 850/1900, however.
The device is completely unlocked and unbranded but its specifications clearly state that its 3G frequencies are 900 and 2100.T-Mobile's 3G is 1700/2100 (together) and it's different from the European 2100. Unless the North American bands can be activated via a secret menu, or by flashing a different radio (impossible with 2.3.4), the phone, as is, can't connect to American 3G networks...only GSM 850 and 1900.
So, a miraculous secret menu appears to be my only hope, which, of course, is impossible to implement if the hardware doesn't support it!
Thanks for your concern!
Well, with you phone, you can use only half of tmo's 3g service since they reserve one band for uploads and the other band for downloads. So technically you kinda get 3g, but just 1 way.
Sent from my Desire Z via XDA App
I'm afraid that i can't do that either because the TMO's 2100 3G frequency spectrum is not the same as the European one!
I think I'll exchange it with a friend's European Nexus S which is tri-band 3G and, besides 900 and 2100, it supports TMO's 1700/2100 band! It is an excellent phone but I slightly prefer the metal and the weight of the Desire Z despite the fact that I do not particularly care about the physical keyboard!
Thanks anyway guys!
haki.gr said:
I'm afraid that i can't do that either because the TMO's 2100 3G frequency spectrum is not the same as the European one!
I think I'll exchange it with a friend's European Nexus S which is tri-band 3G and, besides 900 and 2100, it supports TMO's 1700/2100 band! It is an excellent phone but I slightly prefer the metal and the weight of the Desire Z despite the fact that I do not particularly care about the physical keyboard!
Thanks anyway guys!
Click to expand...
Click to collapse
yea. i think mputtr brought up the correct point. The way T-mo uses 3G is 1700 and 2100 separately for down/up, so like you said its different than the Euro 2100 spectrum.
Sorry it didn't work out.