changing bands 900/1900 to 900/1800

[pdanhieux]

I just bought me a QTEK 1010 with ROM v3.08.10ENG and Radio version 6.02.

But my Operator only operates at 1800 Mhz, and i think this phone can only handle 900/1900 (its has model no. PW10B1). Is there any way how i can change this ? or is that impossible?

thx

[cruisin-thru]

It wont work, or if it did it would be extremely flaky if it managed to connect bearing in mind the 100mhz difference in frequency.

[pdanhieux]

Hmmz, while i was googling for WALLABY Bootloader, i came on the main site of xda-developers where the bootloader was describer. Then i went into the UTILITIES screen of my bootloader, and changed my settings to GSM 900/1800. And i rebooted my phone.

It looks like it's now running on my 1800 Mhz provider, cause i can make phone calls!

Does this mean that it IS a triband phone?

[cruisin-thru]

Not really, where people have been able to get 1900 on 900/1800 phones it has been very flaky at best, let us know how you get on using 1800. By the way, which operator are you using.

[Joe_Scheidegger]

I bought a SX56 few days ago in eBay(US) .... I decided to buy because the guy was sure that his phone was TriBand... but when I started to use here in Brazil, I realized that's impossible to find a carrier ...because the GSM here is 900/1800Mhz.... instead 900/1900 from US GSM Mobile.

How can I change the band ???
I presume the SX56 is 900/1900 because I read a AT&T logo ...
But I need to change to 900/1800Mhz...

Could you help me ???

Thanks,
Joe Scheidegger
Sao Paulo Brazil

[Biso007]

Hi guys,

thought of saying a couple of important notes:

1. when checking the type of your device, refer ONLY to the sticker on the rear side. do NOT depend on what's written in the device info!

2. the xda 1 is a "dual" band device either 900/1800 (A type) or 900/1900 (B type). both ROM and GSM menu will have the 3 options but this doesn't mean it will work. if you want a tri band device get the xda II

[sprint]

:shock: XDA 1st working good in Russia . The phone and GPRS .

[Peter Poelman]

But I need to change to 900/1800Mhz...
You can try what this other person did: change the band in the bootloader.

Hold the power button while performing a soft reset (large hole, bottom left). After you see the bootloader screen, press the calendar button (top right above display). The options 900/1800, 900 and 1900 are all in the menu. Move with rocker keys (below screen), and press the middle of the keys to select. The soft reset again (without holding power).

1) You may need to remove the SIM and put it back in before the phone 'understands' the change.

2) Your radio part is now operated 100 MHz or ~5% out of tune. And it wasn't a very good GSM radio to begin with. Pray the 1800 provider you're with is high in the band.

[chris_khho]

Peter said, "Hold the power button while performing a soft reset (large hole, bottom left). After you see the bootloader screen, press the calendar button (top right above display). The options 900/1800, 900 and 1900 are all in the menu. Move with rocker keys (below screen), and press the middle of the keys to select. The soft reset again (without holding power). "

After you do all this, does the original Radio ROM 4.xx.xx or whatever compatible as before? People used T-mobile 6.xx.xx in US for 900/1900 Radio but 4.xx.xx in Europe for 900/1800 Radio.
I knew in the wallaby bootloader they have that utilities but you may need to change the radio as well, is it? I guess....

[pdanhieux]

After testing the mobile on 900/1800 for a while, i would not advise it to anyone of doing it, cause my connection is really sucky sometimes.

If there is anyone in europe who wants to have an XDA 900/1900 for testing purposes and exchange it with an 900/1800. Let me know :-)