Database Develop

Cant get 3G only symbol is E

I bought my HTC Diamond on UK. I updated the ROM to the RUU_Diamond_HTC_HK_WWE_1.93.831.1 this was supposed to make my phone QuadBand. It does work in USA (Boston) where I live. But I have never seen my phone doing 3G and speed test top was around the 1xx kbps.
Any Ideas?
PS. I am on the ATT network

Are you sure you have 3G coverage in Boston? Do you have a USIM-card (which I was told to be required for UMTS stuff)?

3G speed
I did look at the ATT coverage map and it said that I do have coverage.
How do I know what type of SIM I have? The SIM does have the 3G logo on it.

Are you sure your phone has the bands?
Check the Band setting, Settings->Phone->Band,
in the dropdown box for "Select your GSM/UMTS band", my US 3G ATT phone shows the following options:
Auto
UMTS(850+1900)+GSM(850+1900)
(oddly enough, the settings have to be on Auto for the phone to work..)
When I bought my diamond, I was curious about my sim too, so I took it into the ATT store and asked if it was the "latest 3G sim" and he said yes. Mine is half white (top) & half Blue (bottom), with a orange 3G fireball in the topright corner.
If yours matches all that, then take it to the ATT store and see if you get 3G in the store
Also..if you have doubts, I've had multiple Sales reps in the store tell me I can get a new Sim for free at any time, just need to ask.

3G
I do have that SIM half blue half white with the 3G fireball logo.
On my select network I have
Auto
GSM
WCDMA
on the GSM/UMTS band I have
Auto
UMTS(900+2100)+GSM(900+1800)
UMTS(850+1900)+GSM(850+1900)
UMTS(800+2100)
UMTS(850+2100)+GSM(900+1800)
UMTS(850)+GSM(900+1800)
UMTS(1700)

rpassmore
What ROM do you have?

RUU_Diamond_HTC_Europe_1.93.401.2
RUU_Diamond_HTC_Europe_1.93.401.2
Does this ROM supports USA 3G????

Sorry for my English
You have the European version and have only HSDPA 2100 / 900 (3G) and probably ATT works in HSDPA 850 / 1900, if this is the problem, sorry 3G is impossible for you, because is a hard problem, not a soft problem, search in this web there are many post about this. The European is quad band in GSM but not in HSDPA (3G)
CArlos

How about if I use another ROM
If I use another ROM ? would I be able to do 3G?

No I think it's impossible since it's different hardware I believe.

I think the one you have from UK, it only contained HSPA 2100 and US /Canada is using HSPA 850/1900, that's why you don't have the 3G signal.
Quad band only for voice and EDGE.

cmilian said:
rpassmore
What ROM do you have?
Click to expand...
Click to collapse
I'm using the stock rom/radio for the Unlocked US 3G.
1.93.422.4 WWE
1.00.25.08
But I missed the fact that you're using a European Diamond. sorry.

is there any conection betwen 3G and front camera....
i think i have an Eropean model from UK Vodafon which has the front camera... but i am not sure about 3G !
????

sticking to 850 only

Is there any way to get my Captivate to stick to 850 band only, and not switch to 1900. I live in an area where I have 3G coverage on both bands.
Edit: I can get to this using SGS tools, but that would be only till a restart. Any way to get this to stick permanently until disabled.

Go to the phone dialer and put in *#2263# from there you can select what band you want. To check if it took, type *#0011#

Yes.. what he posted above should work even after reboot

The moment I set to 850 its switching from 3g to edge. Strange. Cos when on 3g mode its always been on 850, atleast 80% of times
Sent from my SAMSUNG-SGH-I897 using XDA App

Thats one thing the bugged me is that this phone ... AT&T version anyways.... loves to camp on 1900mhz more and would be fine if it would switch to 850 when needed..... alot of time I would be at -111db and still on 1900 when 850 in the same are would be at -103db.
I enable 850 that way but once you reboot... you need to do it again.....

shoman94 said:
Thats one thing the bugged me is that this phone ... AT&T version anyways.... loves to camp on 1900mhz more and would be fine if it would switch to 850 when needed..... alot of time I would be at -111db and still on 1900 when 850 in the same are would be at -103db.
I enable 850 that way but once you reboot... you need to do it again.....
Click to expand...
Click to collapse
Technically, the lower band should have lower signal strength reducing radiation. Plus should be using less battery power. That is why I am seeing how to get to 850.
Anyways, I think I'll leave it how it is.

[Q] SGS and reception in rural areas (canada)

Hi I have an internation SGS (I9000) I live in canada. I know that this particular model doesn;t support the WCDMA 850 band. So outside urban area bye bye 3G.
On the other hand I used to own an IPhone (my GF has a blackeberry cruve -not the 3g-). And when ever we visited family in a rural area I had signal (2G/GSM only). Last time we went I had a terrible surprise ... my phone wasn't working (no signal at all in contrast my gf was next to me her phone was working).
An other time a frie nd with an iphone had 3(Telus) g (in rougemont) where I had almost nothing.
I'm just wonderong if any fellow north-american (especially canadians with fido rogers) had any stories like this to share.
I'm on gingerbread (very nice except from time to time i experience lockups) with KC1 modem.
Thanks

the 850 band carries voice as well as data, so if your in an area which only has 850 coverage then your screwed.
i've had some modems installed which didnt support 850 and completely lost signal in some areas. there isnt really a way around it.

the thing is I'm with fido, the phone is supposed to fallback on GSM if there's no WCDMA arround (most of the time I disable WCDMA b/c of battery). The blackberry next to me was able to pick something up but not the SGS.
both times I didn;t have the opportuinty to see what band it was using (supposedly it would have switched to the GSM850 of roger's it it needed to, the phone supports it).
May be soneone with roger;s can say more about this. b/c bell do not have GSM network (only WCDMA) so for you no WCDMA850/1900 no signal at all.

[Q] change modem or unlock needed for traveling with a Tmo tab w overcome?

Hello experts,
Would you please tell me if I need a new modem (currently on T849UVJJB, assuming that's stock modem), or do I just need to carrier unlock my tmobile branded galaxy tab in order for me use pre-paid sim from other countries such as Hong Kong or Taiwan.
I have already rooted my galaxy tab and installed Overcome 3.0.0 on it. I am interested in voice + data, but all these different radios and talks of voice calling is disabled on the tmobile server's side (thus only network unlock is required to get voice +data) had me confused.
Greatly appreciate it if someone can clear it up, thanks.

To use any sim besides t-mobile, you need to unlock.
You will need to root your tab, then unlock it.
Since there is no compatable network in China the best you can get is voice and EDGE data.
Use a froyo modem.

Thanks rangercaptain for your reply.
As I mentioned I have overcome rom installed, thus I am already rooted. I also installed from the market galaxy_s_unlock, and it seems to be working (although I won't be able to find out until later when I travel.)
you mentioned it will only do EDGE, which I am dumbfounded:
-most Asia (including China) and Europe support UMTS 2100, known as Band I
-Tmobile galaxy tab spec page listed it supported both UMTS 2100 (Band I) and UMTS 1700 (AWS)
I am traveling soon so I guess I will report back. But if there is any actual report from users that would say one way or the other it would be awesome.
Thanks.

The word "and" is the key. The t-mobile tab has to have 1700 and 2100 bands to have 3g/H. Outside of US t-mobile service area, the 2100 band is available, but no 1700 band.
Go prepared for EDGE and be pleasantly surprised if you get 3g. It has worked out in a few places.

well, I am at Hong Kong right now, and here's what I found:
I am using hutchison 3G, JPE modem.
Yes I get voice. Data: GPRS works, EDGE works (though most of the time is G)
But whenever the icon indicate 3G (even with 4 bar) I get no data, at all.
Here the head scratcher: When 3G swtich over to the letter H, if it is above 3 bar I can get data! But I thought 3G and HSPA is on the same frequnecy and if it works for H it should work for 3G also.

That's because the bands for 2100 match, and the US 1700 band and the overseas 1900 band have a small overlap, so you occasionally hit the sweet spot.

[Q] ATT GTab on Tmobile Network - 3G Possible? (CM10, JPZ Modem & 1900 re-farm area)

[Q] ATT GTab on Tmobile Network - 3G Possible? (CM10, JPZ Modem & 1900 re-farm area)
So I have the ATT version of the Galaxy Tab. I have CM10 on it and it's running great. When I initially purchased it, I planned on just using it as a Wifi tablet, no Cell Data primarily since I had CDMA service (Sprint). Recently I switched over to Tmobile and would like to use data from my Tmobile plan.
I SIM unlocked my Tab following Roto's guide
I can make phone calls and send text messages
I get Edge service now
However, I could care less for Voice/Text service, all I want to do is use 3G/HSPA.
I also realize that Tmo's 3G band is different than ATT's, however the 1900 Mhz refarming is already happening in my area (Central Florida). I cannot however tell if my specific local area has coverage (is there an app I can run on my Note2 or GS3 to tell what bands it has access to?).
I am wondering if I can just flash a Tmobile modem and get data working on 3G/HSPA. I don't really think it's that simple, but any feedback would be great!

FWIW, I was on the JPZ modem before I started.
Well, I went ahead and flashed the Tmobile modem, got 0 service, then tried the ATT modem, got 0 service, then flashed back to the JPZ Modem... also didn't work.
Going to try to ODIN...

Well, apparently when I was jacking around with different modems something went haywire and it deleted my stuff from /efs, and the modems were never actually put into /radio. I restored my /efs backup (thank goodness for roto's suggestion to keep 11.5 years ), carrier unlocked again, then pushed the T-mobile modem to the radio folder. Thankfully I found the "Secret Codes" thread and when I went to check my IMEI it was blank, which then clued me to start looking in the /efs folder and then /radio.
Rebooted and I'm back to Edge service... and a noticeably lower number of reception bars. With the JPZ modem I saw 4/4 bars with Edge service while the Tmo modem changes between 0 & 1 bars.
I performed the *#*#2263#*#* (RF Band Selection) secret code and made sure only 850 Mhz GSM and 1900 WCDMA were enabled (since from what I understand that's the frequencies ATT had put into the Tab) and disabled the 1700 & 2100 WCDMA bands since the hardware isn't there.
/Thinking my area might not have 1900 refarming yet, I'm going to take it to work with me tomorrow and see if I see anything different.

Well, clearly switching modems is a bad idea. I tried the Tmo modem, both with specific bands selected and "all." Saw only 1 bar total, and only Edge service- not better than the JPZ modem. I switched to the ATT modem, selecting "all" bands, nothing at all. I finally switched back to the JPZ modem and bam, 4/4 bars- but still only Edge service.
Either the 1900 re-farm hasn't happened in the areas I'm testing, or I can't make this work...

phdeez said:
Well, clearly switching modems is a bad idea. I tried the Tmo modem, both with specific bands selected and "all." Saw only 1 bar total, and only Edge service- not better than the JPZ modem. I switched to the ATT modem, selecting "all" bands, nothing at all. I finally switched back to the JPZ modem and bam, 4/4 bars- but still only Edge service.
Either the 1900 re-farm hasn't happened in the areas I'm testing, or I can't make this work...
Click to expand...
Click to collapse
OK, I found the following dialer code:
*#*#197328640#*#*
Going to the Debug Screen -> Basic Info it shows the BAND which is GSM1900!
Now, how in the heck can I get this thing to connect to 3G???

Unless T-Mobile switches their umts/hspa to 850Mhz ( like your at&t) or 2100Mhz, I dont think you can get 3G using non T-Mobile tab.
The 1900 should be only the gsm part.
Sent from my GT-P1000 using xda app-developers app

Thanks for the response. I guess I was assuming my ATT Tab would have the same restrictions an ATT iPhone would (just Edge service until the 1900 Mhz refarm happened on Tmo from ATT spectrum). Also, I was working under the assumption that an ATT Tab would have the same requirements as a Tmo Tab (needing some sort of software switch to go from 2G <-> 3G), or possibly a different modem.

So, after reading some more in the Tmo forums about my Note 2 and realizing the Tmo network has 3G/HSPA on WCDMA. I messed around last night and switched my GTab to WCDMA 1900 (only) and low and behold my data popped up alternating between 3 and H. Tried a speed test and got over 5.8MB download/1.6MB download!
Frigging awesome!

Re: [Q] ATT GTab on Tmobile Network - 3G Possible? (CM10, JPZ Modem & 1900 re-farm ar
Maybe you can detail your steps here for the benefit of others.
Sent from my GT-P1000 using xda app-developers app