Back in december 2010, my i9000 worked just fine on froyo, with an provider that operates on 850 mhz for GSM and 2100 mhz for 3G. My work made me move to another provider which operates in 1800 mhz for GSM and 850 mhz for 3G. Also, my phone was great. Gingerbread came and, as everyone else, I made my update (and of course changed the bootloaders). The problem: I'm back to my old provider again (850/2100 mhz) and, as strange as it may seem, my phone can't connect to the gsm frequency (850) anymore! The 3G works with no problem. I've tested lots of modems, configurations, I have even returned to froyo, with no positive response. It seems like my phone has never had the gsm 850 mhz option. What has happened? Is it possible that my GSM frequencies have changed (by software?) Does the bootloader have anything to do with this? I'm just as confused as I can be! And I need my phone to work! Help me please!
Edit: DID IT!!!! I don´t know what was currupted, but I did a full format : SD,Sys,Data,Cache and after that I made a new ECLAIR (JM9) install and.... voillà....2G 850Mhz working again! Txs for the attention!
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does anyone know, or has anyone tried, to enable the wallaby for use on 850 band? yes, it's because of cingular.
could this be accomplished with a different radio stack (even from another device)?
The band that a phone works on is limitted by its hardware, not its firmware. IF the phone you have doesn't currently work on 850mhz, then there will be no way to get it to work.
AT&T/Cingular are in the process of rolling out their HSDPA network and a handful of cities are using it; NOW is the Universal capable of this....I asked a similar question about the UMTS 1900 MHz being activated so it could be used in the states; Granted I was given some very good replies but I am still curious. Over the past week I have been talking to some other engineers in my field and have found that a great number of things are possible with the Universal, it has the architecture to support this, SUPPOSEDLY ! Now lets look at UMTS as a whole; then HSDPA ! HSDPA is a software upgrade to existing UMTS software, that's all ! SO is it possible that we can have HSDPA on the Universal with an upgrade to the radio stack, I think YES !...and the bands should also be able to be activate, current UMTS 2100 MHz to 1900 MHz so it becomes dual band...the other is the GSM 850 band ! That apparently can be activated !...HOW is the big questions....Most of the HTC is limited by software; not hardware...its existing hardware has been built with scalability in mind...I just hope that some one can figure out the radio stack updates to facilitate this functionality !
The current model does not support HSDPA. However, I heard that the HSDPA version is due before year-end.
Hello to all
i have been searching a few known phone's that i like but i can't seem to find a phone that has gsm 2100 mhz band is this a new band on the gsm network thier for i have to wait for them to make gsm 2100 mhz band phone
Reason being i with tmobile and the 3g i been told by tmobile rep only works for tmobile on 2100Mhz gsm band
if possible is thier away to change or reprogram your phone for the band or is this hardware in the phone
sorry i'm quite ignorant to this network tower thing but trying to learn
thanks for you help
you might as well be going from analog to digital. its normally not just a software update.! its a complete hardware change. If you look at the iphone for example it has 3 radio chips in it all for different bands!
I bought an European Optimus 7 and it shows on the box "WCDMA 900/1900/2100, GSM850/900/1800/1900"
There's any way to put this phone to work on 3G WCDMA 850 networks at full speed?
Thanks
I own a Telus version of Optimus 7. My phone has the 900 3G band on it. I will tell you how to check whether your modem supports 850 or not. First, you open up the dialer and enter ##634#. This will install the MFG app, that will be accessible through your app list. The password that it asks is 277634#*#. Now you have access to the manufacturer test/setting menu. Proceed to the Engineer Menu, and then Modem Setting, followed by Band setting. There, you should see all the bands that are available, and WCMDA basically means UTMS or 3G. If you have the 850 band, it should be available in this menu. There are two other things you need to do before gaining access to this band, if available. But in order for me to continue, I need to know which carrier you plan to use this phone on. I am going to assume you want to use this in North America and you have already unlocked it. Let me know, and I shall help you further on making your phone functional for a 3G connection. BTW, I am typing this on my Optimus 7...the keyboard is seriously great, and if it wasn't for the loose buttons, I would have absolutely no regret over my purchase.
Thanks.
I saw here, there are these options available:
1.Automatic
2.WCDMA Only
3.GSM Only
4.WCDMA 850
5.WCDMA 1900
6.WCDMA 2100
7.GSM 850
8.GSM 900
9.GSM 1800
10.GSM 1900
11.WCDMA 900
Sorry for picking up this old thread again but there is no final answer on this.
The point is that I'm having the same problem, I have a european E900 and I can see the WCDMA 850 in the MFG settings. So is this working?
I'm going to Thailand next week and wanted to use True Move 3G which is on 850 Mhz.
Ok, just for the record - I am in Thailand now and the 850Mhz 3G Network from True Move is not working on the European E900.
Hope this helps for those who were looking for this answer.
After updating my i9000 to GB (and of course changing the bootloaders),The GSM (not WCDMA) 850 simply can´t conect. Has anyone had the same issue? is there a way to revert to 2.2.1 bootloaders (in my opinion is the only change I´ve made). Really need help! Txs all.
PS: this issue is not related to 3G 850 mhz, which is working just fine, but to 2G (Gsm) 850 mhz, which used to work prior to GB.
just flash a modem that has 850 enabled.. mine works on 850
dlockhart said:
just flash a modem that has 850 enabled.. mine works on 850
Click to expand...
Click to collapse
Exactly..use JL2 (my favorite) or KC1. You should be golden.
not 3G...
dlockhart said:
just flash a modem that has 850 enabled.. mine works on 850
Click to expand...
Click to collapse
Txs, but I'm having this problem on GSM (2G) 850mhz, not on WCDMA (3G).
It's like this freq suddenly "disapeared" after updating to GB.
It used to work on the same modem I'm using now.
Also no response when trying to go back to 2.2. That's why I suspect it's something related to the bootloader with GB.
have you had any luck getting your 2g working im in the same boat