Does anybody know how to show which gsm band (900/1800 MHz) is used. And is it possible to switch this manually?
I´ve tried fieldtest (form hermes i think, but it shows only the Signal strength)...
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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.
Hi All,
is there anyway to determine what GSM frequency band a WM5 phone is currently using?
I would like to know if my WM5 device is using a 900 or 1800 MHz GSM band. The device is quad-band capable and the network I am on is dual-band 900/1800. I can't find any GSM hash codes to report the information and I've had a quick look through extended TAPI but can't see anything.
Building on from that is there anyway to force a WM5 device to only use 900 or 1800? i.e. the mobile would only report itself to the network as being 900 or 1800 capable...but not both.
Thanks, rhd
Can somebody please explain GSM vs WCDMA vs UMTS for the bands?
My impression is GSM is 2G and UMTS is 3G and both can supply regular phone service? What's WCDMA then?
T-mobile USA is GSM 850/1900 and what else?
I was thinking if I specify what network and band to use it'll use less batter (ie. no 3g unless I really need it).
this is a really easy google search... or just go to wikipedia....really any search you would try will answer your question.
(you're half right, but mostly wrong)...here's some links for you
http://lmgtfy.com/?q=wcdma+wiki&l=1
http://lmgtfy.com/?q=gsm+wiki
Well I did google already, but still is over my head when I look at the band settings in the TMO HD2.
If WCDMA = UMTS why is there a separate GSM/WCDMA network selection, both allowing bands in GSM and UMTS.
Sounds like GSM is older tech, meaning 2g, whereas 3g is the newer GSM, which is UMTS, which = WCDMA. Therefore, how can you choose UMTS band frequencies on a old GSM network?
Perhaps I'm not phrasing my question correctly. I'm asking these because of the phone settings. I'm trying to figure out if it's more efficient to just tell the phone to look for specific network/band for TMOUSA thereby saving time and battery.
is this just too simple of a question or not many people understand. anyone?
ok, instead of giving you a bunch of info, let me give you just what I think you need.
I'm guessing you're going to Settings>Wireless Controls> Phone>Band and that's where the confusion is coming from. This screen is wrong and the Bands listed there are wrong (they're from previous devices, and htc didn't bother to update that screen).
So, you have 3 main choices there that should be of interest to you as long as you're in the US on Tmobile's network: Auto, WCDMA, GSM (under Network Type).
Auto: switches automatically between GPRS/EDGE/3G (HSDPA, HSPDA+)
WCDMA: 3G (HSDPA, HSPDA+)
GSM: EDGE/GPRS
The only way that playing with the band frequencies could help you would be if you're just interested in Edge/GPRS since tmobile uses two different frequencies there (native 1900 and 850 roaming). For 3g however, Tmobile uses only (and concurrently....as in you need to use both to get 3g and not just one or the other) 1700/2100 frequency.
Long story short, if you're trying to keep the phone from switching between 3g and Edge and you're in an area that has constant 3g, set it to WCDMA. (but note that if you loose 3g but are in an area with Edge, it will not switch to Edge, it will just be 0 bars/reception).
thanks alot, that really clears it up. I don't have data connection besides mms so I figure I may set it to no 3g and save some battery.
Hey all,
I just realized the E900 and E900h have the same modem. The problem with the E900 is that the 850Mhz band is locked. Is there any way to unlock the 850 mhz band? I need it for better reception with ATT.
On the e900 in the MFG menu I have the option to select both cmda and gsm 850mhz band.
I did load the att apn and developer unlock my phone, but I never looked for that band before so you might not need to do those things.
I just developer unlocked my phone. However the 850 Mhz WCDMA band is still locked. Can you receive WCDMA 850?
I'm wondering if one can flash an lg e900 with an e900h rom. By doing this, will this enable the 850Mhz band?
Thanks
Can I flash an E900H rom onto an E900?
I don't know about flashing the e900 rom, I have the stock vodophone rom updated to mango.
and I have 850, 1900 and 2100 bands displayed in my engineering menu > modem options > band selections. Not sure what to tell you.
@Etaduck
Yes I have the 850mhz WCDMA option in MFG. However it is not picking up an actual 850 WCDMA signal. Is your phone picking up 850 for 3g?
I select 850 wcdma restart and get 3g / h depending on where I'm located, but I usually just leave it on wmda automatic
I'm not sure if there is any other way to test what band I'm using, but I'm assuming that selecting it from the MFG menu would be using the 850 band.
can you tell me the exact configuration of your phone? Did you use MFG or Network setup? I desperately need the band as 3g in my area is 850.
AFAIK mobile devices need different communication hardware to physically access some frequencies.
Whilst there may be a software switch to activate access to a frequency.. that does not mean that the unit will contain the hardware to do so.
If I am wrong on this I would appreciate advice.
EDIT: More on this topic and an aswer similar to above here...
http://forum.xda-developers.com/showthread.php?t=1067830
E900 and E900h have different hardware conf, most likely different flash ic so its not recomended to cross flash it.
Hi,
I've been going through a lot of posts for this, but I couldn't find a definite answer. Even though Band 40 is supported by D802's hardware(and also shown in the LTE bands in the hidden menu), used along with the Airtel 4G Sim Card(Karnataka, India), I still can't use it because it is disabled by software/firmware? Also, I can see LTE in the Network selection menu. How is it that I can see the Band for LTE(2300 Mhz) used by my carrier but can't use it??
Anybody able to explain this to me would be of great help!
Thanks!
- Amith
Never mind, I moved on to G4. On a side note, i couldn't get the 2300 Mhz band to work.