Related
I know the original vibrant was a pentaband phone, supporting AT&T's 850/1900 networks as well as t-mobiles 3g networks....
Can anyone confirm the 3g bands on the new Vibrant 4g?
Will there be fast 3g 21mbps for 850/1900 on the modem chip also? ( or 4g whatever you want to call it, in my book its just faster 3g..)
someone enter the debug screen and check which bands are available...
cheers!
stealthj said:
I know the original vibrant was a pentaband phone, supporting AT&T's 850/1900 networks as well as t-mobiles 3g networks....
Can anyone confirm the 3g bands on the new Vibrant 4g?
Will there be fast 3g 21mbps for 850/1900 on the modem chip also? ( or 4g whatever you want to call it, in my book its just faster 3g..)
someone enter the debug screen and check which bands are available...
cheers!
Click to expand...
Click to collapse
How do I get to the debug screen? *#*#4636#*#* gives me WCMDA/GSM under phone info
Sent from my SGH-T959V using XDA App
stealthj said:
I know the original vibrant was a pentaband phone, supporting AT&T's 850/1900 networks as well as t-mobiles 3g networks....
Can anyone confirm the 3g bands on the new Vibrant 4g?
Will there be fast 3g 21mbps for 850/1900 on the modem chip also? ( or 4g whatever you want to call it, in my book its just faster 3g..)
someone enter the debug screen and check which bands are available...
cheers!
Click to expand...
Click to collapse
Curious about this as well. Currently using a vibrant on at&t...
Sent from my SGH-T959 using Tapatalk
stealthj said:
I know the original vibrant was a pentaband phone, supporting AT&T's 850/1900 networks as well as t-mobiles 3g networks....
Can anyone confirm the 3g bands on the new Vibrant 4g?
Will there be fast 3g 21mbps for 850/1900 on the modem chip also? ( or 4g whatever you want to call it, in my book its just faster 3g..)
someone enter the debug screen and check which bands are available...
cheers!
Click to expand...
Click to collapse
HSPA+ 21 only works with T-mobile, AT&T doesn't use an AWS band, in this case is 1700/2100Mhz.
Someone may have been able to 'trick' the vibrant into using a basic UMTS band on AT&T, but I never heard of it, let alone heard that the Vibrant supported AT&T 3G. The Vibrant has GSM.support for them (2G), I haven't seen anything else.
Where's the supporting documents that people have been getting At&t 3G with a T-Mobile Vibrant?
Sent from my HTC Vision using XDA App
TheMan42 said:
HSPA+ 21 only works with T-mobile, AT&T doesn't use an AWS band, in this case is 1700/2100Mhz.
Someone may have been able to 'trick' the vibrant into using a basic UMTS band on AT&T, but I never heard of it, let alone heard that the Vibrant supported AT&T 3G. The Vibrant has GSM.support for them (2G), I haven't seen anything else.
Where's the supporting documents that people have been getting At&t 3G with a T-Mobile Vibrant?
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
Trust me.... I'm using a vibrant on at&t with 3g. It does support the wcdma 1900 band. There is alot of evidence of this...heck engadget made a post about this... google it!
Edit: What I was trying to ask is if the galaxy s 4g supports the 1900 wcdma that the original vibrant supported....
Sent from my SGH-T959 using Tapatalk
Not sure how I could check unless i unlocked it..
Sent from my SGH-T959V using Tapatalk
princedwi said:
Not sure how I could check unless i unlocked it..
Sent from my SGH-T959V using Tapatalk
Click to expand...
Click to collapse
That would work....hopefully the galaxy s 4g can be unlocked the same way the previous galaxy s phones could.
In my research I have found that 4G is not backwards compatable with 3G. Someware I read that companys are putting 3G and 4G chips on the new 4G phones to bridge the gap between the 3G chip ability to handle voice and the 4G chip being able to handle data. I can't say for sure if SGS4G has both chips. It's a know issue that the 3G SGS misses calls when connected to a laptop because It does not handle data well in combination with voice. That's why I upgraded to the 4G. I don't think Its going to make a lot of difference until TM gets their HW in place with a backbone that can support it.
Samsung Galaxy S 4G 1900 MHz WCDMA
I bought my Samsung Galaxy S 4G at a T-Mobile store in San Francisco. I subsequently upgraded it to the latest firmware provided by T-Mobile using Samsung Kies.
I usually use WCDMA only mode because GSM causes awful buzzing sound when I use it in my car (I have a FM transmitter connected to my phone).
Anyways, I was curious to see if I'd see AT&T, so I searched for network (still under WCDMA Only mode), and it found both AT&T and T-Mobile.
I pressed *#197328640# in the dialer, and then went to the debug screen/band selection to look at available bands, and it actually does have 1900 WCDMA.
It shows
GSM 850, 900, 1800, 1900, WCDMA 2100 (FDD I), WCDMA 1700 (FDD IV), WCDMA 1900(FDD II).
I don't know if AT&T SIM would work since my phone is locked but I can report back once I get it unlocked.
EDIT: Reading an old post of mine, I realized that my memory played a bad trick on me. My tests DID work on 1900 WCDMA and DID NOT work on 850 WCDMA, just opposite to what I wrote earlier in this post. --sorry
fm219 said:
...Anyways, I was curious to see if I'd see AT&T, so I searched for network (still under WCDMA Only mode), and it found both AT&T and T-Mobile.
I pressed *#197328640# in the dialer, and then went to the debug screen/band selection to look at available bands, and it actually does have 1900 WCDMA.
It shows
GSM 850, 900, 1800, 1900, WCDMA 2100 (FDD I), WCDMA 1700 (FDD IV), WCDMA 1900(FDD II).
I don't know if AT&T SIM would work since my phone is locked but I can report back once I get it unlocked.
Click to expand...
Click to collapse
I don't think it would work. For reference, here is a side by side band comparison between my Vibrant (tested 3G on AT&T) and my coworker's SGS 4G (locked, untested).
The essential band here is the 850 1900 WCDMA, but the "overflow" 850 WCDMA is missing and I couldn't make it work anyways (I'm in Houston, maybe it is not switched on here).
My understanding is that AT&T usually uses 1900MHz for 3G, and in certain cities where they don't have enough bandwidth in 1900 MHz like NYC and SF, they use 850MHz.. so you could still get by with only 1900 MHz, no?
EDIT: Reading my old post, my memory played a bad trick on me. My test DID work on 1900 and DID NOT work on 850, just opposite to what I wrote earlier on this post.
fm219 said:
My understanding is that AT&T usually uses 1900MHz for 3G, and in certain cities where they don't have enough bandwidth in 1900 MHz like NYC and SF, they use 850MHz.. so you could still get by with only 1900 MHz, no?
Click to expand...
Click to collapse
Yep, thats what I have heard as well. Now one thing of note. When I tested my Vibe, it only worked on the 850 1900 WCDMA band. Could not make it work on the 850 no matter how hard I tried. I'm in Houston for that matter and maybe this 850 WCDMA is not enabled here.
This was my test: http://forum.xda-developers.com/showpost.php?p=9958501&postcount=14
fosormic said:
EDIT: Reading an old post of mine, I realized that my memory played a bad trick on me. My tests DID work on 1900 WCDMA and DID NOT work on 850 WCDMA, just opposite to what I wrote earlier in this post. --sorry
I don't think it would work. For reference, here is a side by side band comparison between my Vibrant (tested 3G on AT&T) and my coworker's SGS 4G (locked, untested).
The essential band here is the 850 1900 WCDMA, but the "overflow" 850 WCDMA is missing and I couldn't make it work anyways (I'm in Houston, maybe it is not switched on here).
Click to expand...
Click to collapse
I'm currently unlocked on AT&T and i'm on 3G. I ALWAYS have an issue with upload speeds, but otherwise download speeds are just fine.
I attached four photos, of the available bands with my CURRENT galaxy S 4G unlocked on AT&T.
Also, a speed test I ran. That download speed is WAY higher than average because it was taken when the network was under the lightest usage possible, late at night.
Oh wow, over 5Mbps download on AT&T?
Are you on AT&T's 4G (HSPA+) or 3G?
I'm supposedly on T-Mobile 4G (my phone shows 4G when I download/upload), but I don't ever get 5Mbps. I get usually something around 2~3Mbps down and 1Mbps upload. I'm in the Bay Area.
I went into phone debug page, and one of the screens says HSDPA[0], HSUPA[0]. It also says network status: HSDPA (sorry I don't have the exact info on me right now).
Am I really just on HSDPA, not HSPA+? Is there a definite way to find out what my phone is using? Thank you.
fm219 said:
Oh wow, over 5Mbps download on AT&T?
Are you on AT&T's 4G (HSPA+) or 3G?
I'm supposedly on T-Mobile 4G (my phone shows 4G when I download/upload), but I don't ever get 5Mbps. I get usually something around 2~3Mbps down and 1Mbps upload. I'm in the Bay Area.
I went into phone debug page, and one of the screens says HSDPA[0], HSUPA[0]. It also says network status: HSDPA (sorry I don't have the exact info on me right now).
Am I really just on HSDPA, not HSPA+? Is there a definite way to find out what my phone is using? Thank you.
Click to expand...
Click to collapse
Technically I'm on HSPA+, though this phone doesn't even cover all of the "necessary" bands.
Look, to edit what bands you're on go into the market and download SGS Tools.
Then, go into the first line (Secret Codes) and hit Band Selection.
I'm on AT&T so I'm not sure what bands you need, but you can manually select them in there.
To check the band you're on, go to GSM Status in the "Secret Codes" page again.
Sent from my SGH-T959V using XDA Premium App
Oh I know I'm on 1700/2100 MHz because that's the only frequency (AWS) that T-Mobile uses for WCDMA/UMTS/4G/3G.
I downloaded Phono, and it says Network Type is HSDPA. Shouldn't it say HSPA+? I'm just wondering if there's an easy way to tell if I'm really on 4G (aka HSPA+) as opposed to 3G.
I actually messed around with debug settings last night so I'm worried that I screwed it up....
Thank you!
fm219 said:
Oh I know I'm on 1700/2100 MHz because that's the only frequency (AWS) that T-Mobile uses for WCDMA/UMTS/4G/3G.
I downloaded Phono, and it says Network Type is HSDPA. Shouldn't it say HSPA+? I'm just wondering if there's an easy way to tell if I'm really on 4G (aka HSPA+) as opposed to 3G.
I actually messed around with debug settings last night so I'm worried that I screwed it up....
Thank you!
Click to expand...
Click to collapse
Which debug settings did you change?
And as for Phono (which I've never even heard of/used until now), my phone says HSDPA as well, which, quite frankly, makes no sense. I guess you can technically get speeds of around 5MBPS on HSDPA but it's not typical.
You should easily be able to tell whether you're on HSDPA or HSPA+ with the 4G/3G connectivity icon. in your status bar.
Now, I'm no expert, but hopefully that answers your question.
I played around with GCF settings. When I go into debug mode, there was something about choosing Rel.6 or Rel.5 or cancel settings.. And then also, if you do *#3214789#, you can enable/disable GCF Mode.. which I have no idea what it is about....
Thanks!
fm219 said:
I played around with GCF settings. When I go into debug mode, there was something about choosing Rel.6 or Rel.5 or cancel settings.. And then also, if you do *#3214789#, you can enable/disable GCF Mode.. which I have no idea what it is about....
Thanks!
Click to expand...
Click to collapse
Hmm...that's awfully strange.....
I can't find anything about it anywhere....
Try restoring using ODIN yet?
I mean, if the phone is that messed up since you messed with that setting.
I put my friends att sim in my unlocked sgs4g to test and the 3g sign came up by the bars as well as the att operator logo didn't really test out speeds but im guessing that the 3g sign wouldn't have came up unless it was really picking up that frequency.
I have just 2G speed (checked by speedtest) with my Atrix 2!
As you know switcher 2G/3G is disabled on our phone!
I certainly have 3G on my account, I checked my SIM card with other phone and other SIM card with Atrix 2 and got just E icon (2G).
Any ideas???
did u check ur service provider does support the A2 3g frequency??? you need 850 / 1900 / 2100 either one of them to get 3g or 4g Speed.
athris said:
did u check ur service provider does support the A2 3g frequency??? you need 850 / 1900 / 2100 either one of them to get 3g or 4g Speed.
Click to expand...
Click to collapse
I use USA T-Mobile.
So does it mean that AT&T Phones don't support 3G or 4G T-Mobile Internet even if unlocked?
From what I remember from the ATRIX forums is they use the same frequencies but with a AT&T phone on T-Mobile u will only have Edge or 2G speeds. No 3G or Hspa+
JRW 28 said:
From what I remember from the ATRIX forums is they use the same frequencies but with a AT&T phone on T-Mobile u will only have Edge or 2G speeds. No 3G or Hspa+
Click to expand...
Click to collapse
Could you provide with links?
I'm going to return phone if this case .
If I root phone will I get 3G?
yup, as far as u know Tmobile USA only support 1700 but atrix 2 doesn't support that so you wont get 3g from it.
Also you wont get 3g even u root it, root doesn't do anything with the hardware.
athris said:
yup, as far as u know Tmobile USA only support 1700 but atrix 2 doesn't support that so you wont get 3g from it.
Click to expand...
Click to collapse
It is said that tmobile supports 1700/2100 Mhz for 3G in wiki and Atrix 2 supports 2100 Mhz.
I think that's 2100 MHz is not the real 2100 band. It means 1700 download and 2100 upload. For more information, i think it is better to ask those peoples who are using tmobile usa.
I haven't run across any AT&T phone so far that works with T-mobile on anything but EDGE.
I think the galaxy s2 can. Someone has 3g ln there T-Mobile gs2. And they get better speeds lol
gunnyman said:
I haven't run across any AT&T phone so far that works with T-mobile on anything but EDGE.
Click to expand...
Click to collapse
Sent from my SAMSUNG-SGH-I777 using XDA App
T-Mobile uses 1700Mhz/2100Mhz for UMTS/HSPA.
Like AT&T, they have 4 total bands for coverage, they do not use 1700 down and 2100 up. You pick either one. TMobile has a big disadvantage here, since with out a low frequency to carry hspa, they don't get any where close to the footprint per tower AT&T does.
Frankly TMobile is odd-man out in the US, and I am really surprised they have as many subscribers as they do.
All that said, my question is: How did you unlock an Atrix 2?
I understand how to flash radios and roms, not so much of a noob. but maybe this is a noob question. I have brought a att locked phone, I unlocked it. I live in the dominican republic and i have a plan(contract) with the orange phone company here. I only get 2g speeds(edge) not even 3g because skyrocket uses the 850 mhz band and my phone company uses 900. I wanted to flash the i9100 radio/modem hopefully to be able to get 3g here. if someone have insight on my situation please let me know
I'm not really sure, but I am 100% positive you cannot flash any other radio except the skyrocket, t989, and note(be careful) radios, the skyrocket has different internals
Sent from my SAMSUNG-SGH-I727 using XDA
And the blaze 4g I believe.
Sent from my SAMSUNG-SGH-I727 using xda premium
thats why i asked, able to flash galaxys note radio wondering if the s2 i9100 could be flashed too. really need to get 3g speeds here and i love my skyrocket phone to much dont really want to sell it to buy another one
someone please help!
different internals, so no it just wouldnt work. the note they meant was the att note which also has an s3 not the international note which has an exynos like the i9100
---------- Post added at 01:39 AM ---------- Previous post was at 01:36 AM ----------
im just wondering, why did u get a skyrocket to unlock instead of just getting the international unlocked sgs2 i9100?
Definitely do not flash an i9100 radio on the skyrocket.
You might want to try flashing a Rogers based rom and/or flashing the Rogers radio found here: http://forum.xda-developers.com/showthread.php?t=1384865
Most of the Skyrocket radios are RAT locked, meaning you can't change it by dialing *#2263#. The Rogers one should work for you I think (but someone please correct me if I'm wrong... )
I brought the phone on craigslist and i read about the power and beauty of the phone and i fell in love with it, didnt forsee this problem. thought the minute i unlocked it i would get the data speeds minus the lte. i was wrong
flash the blaze 4G radio, i swear that uses the 900 frequency, or any other t989 radio for that matter. Most of those are RAT unlocked as well. Don't stress too much, the skyrocket has a penta-band radio that would do any world/touring phone proud
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 1700 / 1900 / 2100
Those are the frequencies that are used for the sblaze and the t989. seems like i have no luck because i need it 900 for 3g. guess 2g is going to eventually kill me one day. thanks everyone who contributed to my search for answers. I appreciate it'
20 dollars paypall to anyone who can help me find a working solution
30 dollars?
Change your service!
come ooon! Orange LIE about supously 3g service and the maximum speed in orange is less 1 mega :-O I did test in all Dominican Republic and I think you are waste your time with that! I have a Skyrocket in Claro and I have a Blackberry pre paid service and I have 4 to 5 megas of speed! that rreally good! my modem RUXUMA 7 and my rom is Embryo 6.4
Skyrocket radio
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 1900 / 2100
4G Network LTE 700 MHz Class 17 / 1700 / 2100
Click to expand...
Click to collapse
http://www.gsmarena.com/samsung_galaxy_s_ii_skyrocket_i727-4303.php
hatelamez561 said:
I understand how to flash radios and roms, not so much of a noob. but maybe this is a noob question. I have brought a att locked phone, I unlocked it. I live in the dominican republic and i have a plan(contract) with the orange phone company here. I only get 2g speeds(edge) not even 3g because skyrocket uses the 850 mhz band and my phone company uses 900. I wanted to flash the i9100 radio/modem hopefully to be able to get 3g here. if someone have insight on my situation please let me know
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1507825
Try this tutorial and see how that works for u
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
An almost identical topic already exists in HTC One S section (Radio UMTS/HSPA switching bug (3g/4g)), but I was thinking that maybe there is a different possible fix for Blaze 4G.
I am currently on the AT&T network using Straight Talk SIM. On the status bar it displays 3G with enough bars, but from time to time it stops receiving data in the middle of the transaction. When it happens, the mobile network type is shown as UMTS under "About phone" -> "Status". When it switches back to HSPA, the data resumes. It really messes up my browsing a lot
When I was still on T-Mobile, it did not seem to happen, as the connection was either "4G" or E (mobile network types HSPA+ or EDGE, respectively). I never noticed UMTS in the phone status while using T-Mobile.
One of the reasons I chose Blaze 4G is because it supports both AWS and 1900 bands, so it can work on AT&T and T-Mobile networks. As we know, T-Mobile coverage is not great, so the connection often switched from "4G" to edge. Being on AT&T, the connection firmly stays on 3G, but now I have this annoying bug.
Your input and suggestions would be highly appreciated! By the way, I am using a stock ROM with root.
I have had the same issue with my GS3 as well as my S2 and Sensation, all on T-Mobile. It is something I've noticed. Another thing I noticed, that is shady on T-Mobile's end, is that they show "4G" even if it is on UMTS.
RevenG said:
I have had the same issue with my GS3 as well as my S2 and Sensation, all on T-Mobile. It is something I've noticed. Another thing I noticed, that is shady on T-Mobile's end, is that they show "4G" even if it is on UMTS.
Click to expand...
Click to collapse
Blaze only has 4g, E, and G, while on T-Mobile that's why it displays 4g while in umts, Umts is 3g and since there is no 3g icon it shows as 4g, hspa+ is "4g"
Sent from my SGH-T769 using xda premium
RevenG said:
I have had the same issue with my GS3 as well as my S2 and Sensation, all on T-Mobile. It is something I've noticed. Another thing I noticed, that is shady on T-Mobile's end, is that they show "4G" even if it is on UMTS.
Click to expand...
Click to collapse
Is that shady? UMTS Band IV (AWS) provides HSPA+ service. Looks like 1700MHz will be split 50/50 for GSM and H+ coverage, and teh 1900MHz will be split LTE/H+ by next year.
TMO said:
As part of its transition to deploy LTE on its 1700 MHz spectrum, T-Mobile will refarm its PCS spectrum to support both 2G GSM services and HSPA+ services. In a recent FCC filing, T-Mobile said by mid-2013, its expects half of its 1900 MHz spectrum to be devoted to GSM while the other half will run HSPA+ services, and that by then half of its AWS spectrum will support HSPA+ and the other half LTE.
Read more: T-Mobile to test HSPA+ in 1900 MHz for iPhone - FierceWireless http://www.fiercewireless.com/story/t-mobile-test-hspa-1900-mhz-iphone/2012-06-08#ixzz24wzhoLRc
Subscribe: http://www.fiercewireless.com/signup?sourceform=Viral-Tynt-FierceWireless-FierceWireless
Click to expand...
Click to collapse
http://www.fiercewireless.com/story/t-mobile-test-hspa-1900-mhz-iphone/2012-06-08
This chart also indicates that the AWS and PCS spectrums are both used for H+ communications. However, it is a tid bit simplified...
http://en.wikipedia.org/wiki/T-Mobile_USA#Radio_frequency_spectrum_chart
---------- Post added at 11:00 AM ---------- Previous post was at 10:53 AM ----------
Have you tried flashing the other radio? I'm not sure which radio you're using, or if the other one will perform better. However, it does seem like your problem is being caused by the radio.
E107946 said:
An almost identical topic already exists in HTC One S section (Radio UMTS/HSPA switching bug (3g/4g)), but I was thinking that maybe there is a different possible fix for Blaze 4G.
I am currently on the AT&T network using Straight Talk SIM. On the status bar it displays 3G with enough bars, but from time to time it stops receiving data in the middle of the transaction. When it happens, the mobile network type is shown as UMTS under "About phone" -> "Status". When it switches back to HSPA, the data resumes. It really messes up my browsing a lot
When I was still on T-Mobile, it did not seem to happen, as the connection was either "4G" or E (mobile network types HSPA+ or EDGE, respectively). I never noticed UMTS in the phone status while using T-Mobile.
One of the reasons I chose Blaze 4G is because it supports both AWS and 1900 bands, so it can work on AT&T and T-Mobile networks. As we know, T-Mobile coverage is not great, so the connection often switched from "4G" to edge. Being on AT&T, the connection firmly stays on 3G, but now I have this annoying bug.
Your input and suggestions would be highly appreciated! By the way, I am using a stock ROM with root.
Click to expand...
Click to collapse
snoopy1e11 said:
Blaze only has 4g, E, and G, while on T-Mobile that's why it displays 4g while in umts, Umts is 3g and since there is no 3g icon it shows as 4g, hspa+ is "4g"
Sent from my SGH-T769 using xda premium
Click to expand...
Click to collapse
Actually it does have a 3G icon smart guy
I never seen a 3g icon and I live in a 3g area. Smartguy
Sent from my SGH-T769 using xda premium
I have only seen 4g and e, but never 3g
Sent from my SGH-T769
I have been in a couple areas where it kept switching between 4g and 3g so don't assume there is no icon just because it has never been on your phone.
Screenshots or it didnt happen
Sent from my SGH-T769 using xda premium
If it happens again I will
For what it is worth, my unlocked Blaze 4G running on WIND Network in Canada (HSPA/HSPA+) only shows 3G icon and always says UMTS in Phone->Status, running UVLF4 radio.
myorks1127 said:
If it happens again I will
Click to expand...
Click to collapse
theshowman said:
For what it is worth, my unlocked Blaze 4G running on WIND Network in Canada (HSPA/HSPA+) only shows 3G icon and always says UMTS in Phone->Status, running UVLF4 radio.
Click to expand...
Click to collapse
Exactly so the phone is CAPABLE of showing 3G in the signal indication, mine is stock
theshowman said:
For what it is worth, my unlocked Blaze 4G running on WIND Network in Canada (HSPA/HSPA+) only shows 3G icon and always says UMTS in Phone->Status, running UVLF4 radio.
Click to expand...
Click to collapse
I did say "on T-Mobile" I have no doubts it'll show 3g on unlocked or another sim but as I say I live in a 3g area my phone shows umts with 4g icon
Sent from my SGH-T769 using xda premium
And here is the screenshot to prove, happened to me today at the gym. Stock everything as well.
Have you tried flashing the other radio? I'm not sure which radio you're using, or if the other one will perform better. However, it does seem like your problem is being caused by the radio.
Click to expand...
Click to collapse
I am using a stock radio because it supports both 1700 MHz and 1900 MHz bands (Tmo and AT&T) - that is why I bought this phone in the first place. I am not sure there are other radios around for my phone, and even if there are, I am not sure what benefit I would get from flashing a non-stock radio. Very few phones support bands for both GSM providers in the USA; usually, it is either Tmo or AT&T.
On a another note: I got a Tmo SIM card from Straight Talk, and now I do not have this UMTS switching bug. The coverage is a bit worse, but where I have HSPA+, it is still 2-3 times faster than what I got from AT&T HSPA network.
myorks1127 said:
And here is the screenshot to prove, happened to me today at the gym. Stock everything as well.
Click to expand...
Click to collapse
It is not surprising, as T-mobile is rolling out HSPA+ on 1900 MHz band. It will be happening more in the future as more areas will be re-farmed. Since there are only few T-mobile phones that can support 1900 MHz, other users will not see it happen. On the other hand, those few with iPhones on T-mobile network can finally see 3G.
What puzzles me is why it shows 3G instead of "4G" on 1900 MHz band right now? Do they need to upgrade this band to HSPA+ during re-farming?
myorks1127 said:
Actually it does have a 3G icon smart guy
Click to expand...
Click to collapse
Yep, it absolutely does on dark knight build 8.
Oh you guys are talking about ...stock..?
Yeah no 3g icon on stock as T-Mo views all 3g as 4g now. There's no 3g icon on ANY 4g T-Mo phone's stock rom (with a T-Mo sim card). It is how they claimed to have the 'largest 4g network' during that ad campaign. Funny how T-Mo no longer claims that (or is no longer allowed to claim that)....
Here where I live I only have 3g. I have verified this using speedtest where I have never had more than 1.7 down/ 400 up. In Minneapolis I know there's 4g service as I have had speeds as high as 11 down / 2 up and average 8 down 1.5 up. All 3 of those statements are confirmed using Dark Knight build 8 as I have a 3g icon here at home and a 4g icon when I am in Minneapolis. The whole drive to Minneapolis showed '4g' on my wife's Sensation 4G. No, I am completely positive there's no 3g icon in the stock rom for any newer T-Mo 4g phone. If there is a 3g icon on any 4g t-mo phone (using T-Mo service), by all means educate me.
There obviously is a 3G icon as in the screenshot i posted. This rarely happens in the specific area I am in a lot (Gym) but my phone is totally stock and always shows 4G everywhere else. Let the screenshot educate you...
myorks1127 said:
There obviously is a 3G icon as in the screenshot i posted. This rarely happens in the specific area I am in a lot (Gym) but my phone is totally stock and always shows 4G everywhere else. Let the screenshot educate you...
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Are you using a T-Mo sim with T-Mo service?
Yes T-Mobile everything, everything stock never rooted yet. BTW I went to st.cloud state for my first year of college, small world
I do not know if this is allowed and if it is not sorry but it is not a best of thread. I have been having trouble getting good speeds since the switch and have tried numerous combinations but get crappy speeds like .11 mbs down and .12 up
I was wondering what works for you and what speeds are you getting.
Like I said this is by no means a best of thread I just thought this would help others like me who are having trouble getting good speeds on our phones.
Any downloads to the radios not listed in the radios thread would be appreciated.
And if this thread is off limits I am sorry. Just thought I would help us newbies out!!!!!!
Thank you
Jeff
catchjeff said:
I do not know if this is allowed and if it is not sorry but it is not a best of thread. I have been having trouble getting good speeds since the switch and have tried numerous combinations but get crappy speeds like .11 mbs down and .12 up
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Click to collapse
What gives me a little pause here is that those settings and radio combinations will yield different results based on where you are located. Do you know anyone in your area with an HSPA+ phone who can run speed tests to compare your speeds against? It could just be that you're in an area with bad backhaul.
two important bits of info are missing what network type is your phone connected with (g e 3g h h+), and what radio are you using?
lart2150 said:
two important bits of info are missing what network type is your phone connected with (g e 3g h h+), and what radio are you using?
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Radios I have used:
Blaze_4G_LB7_ICS
ULCD2
I727-UCMC-NO-CSC-NO-RIL
UCLK4-NO-RIL
UCLL3-NO-RIL
SGH-T989_UVMC6
SGH-T989D_TLMC4
TMO-SGH-T879-UVLG3
TMO_SGH-T909-UVLH1
I AM USING cm10 STABLE
NETWORK TYPE IS hsdpa:8
Hope that helps
Baseband version is unknown
A good first step is to find some friend with a good t mobile hasp+ phone (like galaxy s2 T-Mobile or galaxy nexus for instance) ...See what speeds they're getting on T-Mobile data...If they're not getting good speeds on their phones, you'll never get good speeds obviously...Remember you're using a phone which was made to be used with AT&T....And from my observation most of those who use the SR with T-Mobile they get similar issues like the ones you're describing , t-mobile switched to the 1900mhz spectrum in some areas that would probably help a little, but obviously that's not something that you can do anything about...
If you really need tmobile service, it's best to trade your SR with a tmobile galaxy s2 , at least that I would do if I was in your situation,I don't like buggy phones or services...
Take a look here:
http://forum.xda-developers.com/showthread.php?t=1507825
It's a long thread but covers this issue pretty well. As far as I can tell there is no hardware-based reason a Skyrocket can't work on Tmobile as well as a dedicated tmobile S2.
I have been using a skyrocket on tmobile for a few months. I couldn't get better than 2G speed until I flashed a new radio and twiddled the apn settings. I get pretty consistent 4G now.
This is what I get using T769UVLH5 radio from this thread http://forum.xda-developers.com/showthread.php?t=1895400
Be sure to thank him:good:
I know you're getting different answers here but if you took an at & t skyrocket it means you have bands 850/1900Mhz for 3g ( don't even think about 4g lte at this point) while tmobl works on 900/1700/2100 3g bands. This means your phone is physically not capable of locking on those bands because it doesn't have them. All it's probably doing is sticking to the old EDGE network since it is a quad band edge.
Sorry to be the bearer of bad news
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
I do not believe that is the case. The skyrocket radio software limits the available bands. Loading a tmobile radio enables the required frequencies.
i727 freq's:
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 1900 / 2100
4G Network LTE 700 MHz Class 17 / 1700 / 2100
Frequecy Source: GSMARENA
i727 freq's:
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 1900 / 2100
4G Network LTE 700 MHz Class 17 / 1700 / 2100
Thank you vinocm
http://forum.xda-developers.com/images/smilies/cyclops.gif
From what I've gathered the skyrocket has the same radios as the Hercules, it just has the added lte hardware. I am on 4.2.2 slim using the le1 radio. Still get random no signal dropouts but not as bad as the others. Think my ril and csc files are wrong so it looks like I have to flash a stock ROM to get them back. Anyone using a stock Hercules ROM?
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
Chris J said:
Take a look here:
http://forum.xda-developers.com/showthread.php?t=1507825
It's a long thread but covers this issue pretty well. As far as I can tell there is no hardware-based reason a Skyrocket can't work on Tmobile as well as a dedicated tmobile S2.
I have been using a skyrocket on tmobile for a few months. I couldn't get better than 2G speed until I flashed a new radio and twiddled the apn settings. I get pretty consistent 4G now.
Click to expand...
Click to collapse
I don't think our channel can do dual channel h+ where the T989 can.
for the others our phone has a penta-band radio it is physically cappable of talking to t-mobile on it's 3g,h,h+ networks just not with the att or rogers radios.