I was curious since AT&T is bringing online 850 mhz at their towers in most area, I was wondering since they are working on a new radio stack to go with their WM2003, if it is possible to program in 850 in it?
That would be nice if their new radio stack would handle 850/1900.
Since AT&T is only going to be selling GSM phones that will do both 850 and 1900, I guess if they don't find a way of programing in 850 to this they will probably drop it from their line of phones.
Upgrading the RSU isn't going to make either T Mobile USA's Pocket PC Phone Edition or the ATTWS' Siemens SX56 Pocket PC Phone work on the 850 MHz band as both phones' hardware is built on the 900/1900 MHz band. Whether or nor not HTC, the manufacturer of both handsets, releases an 850 MHz handset has yet to be seen. 8)
Related
The universal may come to a point of not working at all in the US market. This is for information use only....
1. Cingular is launching their 3G network by the end of the year which looks like will only run on umts 1900, but there are talks that it might also run on umts 850. The universal only supports umts 2100. Currently in the us 2100 is reserved for military satellites, but the fcc has said that it will try to open the band. But to me that means even if the open the band cingular isn't going to change thier network. They'd rather people buy phones from them.
2. ATT ran on mostly 1900, and Cingular mostly 850, now the universal is a tri band phone 900/1800/1900. Cingular is moving most of its phone network to 850 wich the universal doesn't support. But some areas will have 1900 support
So just a warning, If you want the universal you may be limited. And you won't get the highspeed 3G which was the main reason i wanted the phone. Plus you loose out on reception.
hope that helps people who thought about buying the phone.
Hello All,
I recently bought a 3G Cingular service plan with unlimited data. I have a Qtek 9000. Do you think I can use it in markets where cingular offer 3G to make use of video calls/ high speed internet etc?
Thanks,
Gilbert
The Universal only supports UMTS 2100 Mhz not the Cingular 1900Mhz based system.
Bummer. This is a sad day in the history of sad days :evil: Ok but I can still use my unlimited GPRS to surf the net, right?
With the new devices planned for this year, are they planning multi UMTS bands along with GSM quad/ multi bands?
Thanks,
Gilbert
You can only use GPRS on the 1900 network. If you're outta luck there are no 1900 masts in your area (only 850) and it will be a really, really sad day and you wished you had bought a quad band device etc...
There is also some rumour that US UMTS will not use the 2100 band - that would be a real bummer.
I remember in the US when the Jam came out there was two radio versions. One for the US, I cannot remember the bands and another for the rest of the world. But I clearly remember that it was a software issue and not a hardware as the software could change the frequency to match your requirements.
Does this exist for UMTS?
Regards,
Gilbert
this depends more on the antenna design, and how far away the bands are. The radio tuner should not be the issue.
Thanks for the reply. Does a software band switcher exist to do the switch to 1900 UMTS from 2100 UMTS?
Thanks,
Gilbert
The Truth
USA uses the 2100 frequency for US satalites this is why Cingular does not support the 2100 frequency. They will never have 3G on 2100, FCC crap the only thing we can only hope for is a hardware upgrade for the antenna but I doubt it. GPRS only works on 1900 so who ever told you the 850 crap doesn't know. this is why you can get voice calls in certain area but no data + if you only had an 850 towers you wouldn't beable to make a call scince you don't have that band on your device. I don't think there would be a way to hack it to use the 1900 mhz frequency because it would take a really smart developer that can do a lot more than registry tweeks to wirte a relay to the 1900mhz antenna. sorry guys.
I did a lot of reading on this last night. Rumor is Cingular is to start using the 1900 band for incoming and outgoing and then add the 850 band latter since the 2100 band is not available.
just a rumor
It is just a rumor. They already have 3G on 1900 and that's it, 850 is old technology if anything the 1900 tower are going to be eventually replace the 850 tower. Trust me, I live in LV where 3G is all over, GPRS, and 3G is only on 1900mhz if you look at the coverage maps for gprs vs the cellular coverage map you'll see what I'm saying.
Hi, I have an Audiovox SMT5600 but my network band is 900 MHz.
Can somebody tell me whether it is a hardware difference between SPV C500 (GSM 900 / 1800 / 1900) and Audiovox SMT5600 (GSM 850 / 1800 / 1900) or is it just the GSM Rom??? I have read the thread (http://forum.xda-developers.com/showthread.php?t=241435) which explains how to upload the QTEK rom, but it didn't work for me.
I have found the following explanation but it doesn't say whether it is hardware difference or just a different GSM rom.
"The SMT5600 is a tri-band phone that works on the 850/1800/1900MHz bands, which means it will work anywhere in the US where GSM service is available. In the US AT&T uses both the 850MHz and 1900MHz bands, as does Cingular. 1800MHz is used in Asia and somewhat in Europe, though Europe is mostly 900MHz. If you plan to travel to Europe, the SMT5600 should provide some coverage, but you might want to consider a quad band phone which adds 900MHz. The overseas versions of the SMT5600 (iMate SP3 and Orange C500) are triband world phones with 900/1800/1900 MHz coverage which means they'll work in Europe, Asia and in the US though you'll miss the 850MHz coverage used by AT&T/Cingular."
If changing a GSM Rom is the solution, where can I find the 900 MHz Rom and what is the procedure to flash it? Can I just use the Typhoon tools and perform an Emergency Flash for the GSM part or do I have to replace the complete ROM (like with mtty)?
Thanks in advance!
The radio freq's are hardware, not software to my knowlege. AT&T Cingular in the USA have moved to using the 850 MHz band for HSDPA data packets and 1900MHz for voice. Since the SMT5600 does not support HSDPA, therefore the low band is not used. If your market is 900MHz only, then your phone will not handle it. In essence you would need the European version of the iMate or Orange version. Otherwise, you are constrained to 1800 MHz.
OK, but then what about kamscam's explanation in the thread I mentioned above (http://forum.xda-developers.com/showthread.php?t=241435)? He claims that flashing the phone with the QTEK Rom will do the trick.
mircha said:
OK, but then what about kamscam's explanation in the thread I mentioned above (http://forum.xda-developers.com/showthread.php?t=241435)? He claims that flashing the phone with the QTEK Rom will do the trick.
Click to expand...
Click to collapse
I have the iMate 2.4.33.11 ROM if you want to try it. I believe it is WM2003 OEM Rom for the SP3 (Typhoon).
If the claim is true that he changed an 850 MHz phone to 900 MHz and it worked, then this would seem to indicate that the phone may be Quadband but the Radio ROM only operates as Triband with the 1800/1900 always on and the 850/900 as selectable. This may be a possibility, but I still have my doubts. I still believe there is a different hardware radio for the 850 MHz and 900 MHz models.
http://rapidshare.com/files/61129896/SP3_WWE_2.4.33.11.zip
There is hardware difference in C500 and STM5600 which runs on 850. Difference is in switchplexer which in European models filters 900 and 1800/1900 MHz (Murata HA 165) and in STM 5600 (Audiovox) filters 850 and 1800/1900 MHz (Murata HA 216AW). You have to change switchplexer on the board if you want 900 MHz on Audiovox
OK, I guess this concludes the story. I have actually suceeded in flashing a different GSM Rom (Qtek) but the phone still couldn't pick up the signal.
Thanks raskell and typakkk and everybody else for help!
I read on GSMARENA that the 8525 us version is only 850 and 1900. is that true and is there any soft hack to put 2100 (I live in Brazil and 3g with TIM is 2100 here)
I think you read that wrong.
The 8525 already supports the 2100 frequency out of the box. Thats why it works in countries like Japan.
I belive what you were reading was the US (AT&T) uses 850/1900 for its network. However the phone itself supports GSM 850 / GSM 900 / GSM 1800 / GSM 1900 / WCDMA 850 / WCDMA 1900 / WCDMA 2100
Appears to be different version for US
PsyOpWarlord said:
I think you read that wrong.
The 8525 already supports the 2100 frequency out of the box. Thats why it works in countries like Japan.
I belive what you were reading was the US (AT&T) uses 850/1900 for its network. However the phone itself supports GSM 850 / GSM 900 / GSM 1800 / GSM 1900 / WCDMA 850 / WCDMA 1900 / WCDMA 2100
Click to expand...
Click to collapse
It says (and I copy and paste)
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 2100
HSDPA 850 / 1900 - US version
Some phones have different versions for US
Every Cingular 8525, Cingular 8500 and ATT 8525 I've ever used (Mine and friends and work) have ALL supported the 2100 MHZ band.
I even searched the ATT HTC forums and all the results I've saw showed people using their 8525 in places like Japan that uses the 2100 freq without any problems. And these were all US versions.
PsyOpWarlord said:
Every Cingular 8525, Cingular 8500 and ATT 8525 I've ever used (Mine and friends and work) have ALL supported the 2100 MHZ band.
I even searched the ATT HTC forums and all the results I've saw showed people using their 8525 in places like Japan that uses the 2100 freq without any problems. And these were all US versions.
Click to expand...
Click to collapse
Was in Japan last week & had no problems using my 8525 over there.
I used mine in 2100, and HSDPA work OK
Thanks for your answer
PsyOpWarlord said:
Every Cingular 8525, Cingular 8500 and ATT 8525 I've ever used (Mine and friends and work) have ALL supported the 2100 MHZ band.
I even searched the ATT HTC forums and all the results I've saw showed people using their 8525 in places like Japan that uses the 2100 freq without any problems. And these were all US versions.
Click to expand...
Click to collapse
Thats the kind of answer I like to see here. Clear and objective.
(I would take of my hat to you but then it would show my bald head)
Any idea on how to get the HSDPA to work on the Cingular 8525? I have the AT&T Tilt and used the Kaiser Tweak and works perfectly. Co-worker has the 8525 but not showing up. We work about 300 feet from a cingular tower that has HSDPA because my Tilt picks it up but not his 8525.
Is there any type of setting that must be done for this to work like I had to do the Kaiser Tweak?
Thanks,
Flandrel
Hi .. I was searching the forum because I want to purchase an HTC HD2 T9193 which, I know, has the 850 - 2100 Mhz band. But I found on the net a vendor who offers the HTC HD2 850 - 1900 Mhz band, is this right ?
On the other hand, if there is not such HD2 with 850 - 1900 Mhz band, the one with the 850 - 2100 band will pick up 3G in Canada ?
That model (850 / 1900) was supposed to come out (for AT&T most probably), but it has since been cancelled.
I'd be careful if I were you. You can find more info about it here
The Telstra model (T9193) supports 850 / 2100 MHz like you said. You'll need to check with your service provider if they support 850.
leepriestenator said:
...You'll need to check with your service provider if they support 850.
Click to expand...
Click to collapse
Yes. You'll need to check if ATT supports the 850mhz band IN YOUR AREA.
I'm in a North Shore Suburb of Chicago area and have excellent reception with my T9193 in the area. There are 3 dead zones I've found so far that repeatedly drops calls using the HD2's 850mhz band exclusively. Other unlocked phones I've previously owned that used the 1900mhz band exclusively did NOT drop calls in these areas however. Other than that, reception has been great. It's been reported that ATT is "supposedly" moving their entire network to the 850mhz band exclusively by end of 2010. I'm doubtful they are on target for this date given the number of cities still without any 850mhz support.
T9193
Hi guys ...thanks for your responses. Well, I know that the most important service providers in Canada (Rogers, Telus, Fido) transmit 3G in the 850 - 1900 mhz band. I suppose I will not have problems whether I use the T9193