Develop Bugs

Can I use unlocked ATT S3 on tmobile $30 monthly 4g?

I am reading it might work on edge only is that true?

Different Bands... no 4g, just E... Maybe someone know more than me but IMO you cant use 4g

You can use the phone but you will be restricted to Edge data speeds. ATT and Tmo use different freq bands for 3G/HSPA.
ATT uses 850/1900
Tmo uses 1700/2100
You may be able to get 3G/HSPA speeds once Tmo refarms its 2G bands as 3G, but who know when that will be.

You will only get EDGE in MOST areas, T-Mobile is "re-farming" the 1900mhz spectrum from 2g to 3g/HSPA. They are doing this in order to be able to use the iPhone on their network, but it would have the same effect for any unlocked phone. They say they'll have their entire network re-farmed by the end of next year. I haven't found an official map, but this has places where it has been sighted: http://www.airportal.de/

dj_spore said:
You will only get EDGE in MOST areas, T-Mobile is "re-farming" the 1900mhz spectrum from 2g to 3g/HSPA. They are doing this in order to be able to use the iPhone on their network, but it would have the same effect for any unlocked phone. They say they'll have their entire network re-farmed by the end of next year. I haven't found an official map, but this has places where it has been sighted: http://www.airportal.de/
Click to expand...
Click to collapse
Looks like there are many spots in Bay Area, CA.

I tried this on my att S3 and got the sim card and was on the phone with tmobile tech for hours...it never worked and he was trying to tell me it was my phone....not...my phone works great with straight talk.

It definitely works on the AT&T phones. I unlocked mine and bought a tmobile prepaid sim the other day. Able to get 3g in San Jose but still only Edge where I live. Will be switching and dropping at&T once the refarm hits my area.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

i live in brooklyn ,NY and i get t-mobile 4g on my at&t s3 i get about 10mbps down and about 1.5 up

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msgnyc said:
You can use the phone but you will be restricted to Edge data speeds. ATT and Tmo use different freq bands for 3G/HSPA.
ATT uses 850/1900
Tmo uses 1700/2100
You may be able to get 3G/HSPA speeds once Tmo refarms its 2G bands as 3G, but who know when that will be.
Click to expand...
Click to collapse
I have a unlocked phone right now...is there any way to change how the phone receives the freq.??
My phone is asus padfone 2
LTE/WCDMA
HSPA+ UL:5.76 Mbps/DL:21 Mbps
LTE UL:50 Mbps/DL:100 Mbps
3G :
WCDMA :
900/2100
2G :
EDGE/GPRS/GSM : 850/900/1800/1900,
4G:
LTE:
800/1800/2600

Refarmed T-Mobile HSPA+ 1900Mhz Works on N7100 But Not on N7105 Any Suggestions??

Hi guys!
Okay, I'm doing a side by side comparison of the N7100 Vs the N7105, and one thing that is apparent to me now is.
#1) I'm in a refarmed area and I put my sim in the N7100 and bam catches HSPA+
#2) When I put the sim in the N7105 Same spot same settings( network only to WCDMA mode) I Get Nothing zip nada can't connect to the network (however AT&T's Network Shows UP), Only when I put it on GSM/WCDMA or LTE/GSM/WCDMA It's always on Edge. Can't get the HSPA+ to work on T-mobile.
So what gives? They both support the same frequency but only the n7100 is getting HSPA+? I know the N7105 has a DC42 HSPA+ modem vs the HSPA+ 21 on the N7100 but the band support is the same and just the N7105 has the LTE bands in there as well.
So why won't the N7105 Get HSPA+ Speeds on the Re farmed 1900 band?? Any suggestions?

I'm interested in this too. Does anyone know if the N7105 will work on tmobile's H+ network?

I just noticed this too
nostarz said:
I'm interested in this too. Does anyone know if the N7105 will work on tmobile's H+ network?
Click to expand...
Click to collapse
Just came up on a N7105. Is there anyway around the EDGE limitation? Are you all on a stock ROM? I'm curious if changing the firmware for modem or ROM will help get us back up? Or are we stuck because of hardware limitation?

are you using the right modem?
Sent from my Desire HD using Tapatalk 2

Still no luck?
I found the modems (or a discussion about them) at http://forum.xda-developers.com/showthread.php?t=2031575
The collection of modems seems to point here http://samsung-updates.com/device/?id=GT-N7105
I had NO LUCK finding anything for TMO in USA.
Anyone who came up with a solution for this?

Atomix86 said:
are you using the right modem?
Sent from my Desire HD using Tapatalk 2
Click to expand...
Click to collapse
What modem do you suggest? I didn't find one for the US to convert a Telstra N7105 to N7100 (US -- Tmobile).. please assist.

I had the same problem. The thing is that the N7105's 3G radio does not support 1900mhz. Your best bet is selling the N7105 and buying a N7100 like I did.

I have the same problem
I have the same problem.
I wonder if by flashing any other modem or ROM (let's say ATT ROM) I could get my N7105 work 3G on 1900MHz.
The thing is:
N7105T: 3G (850/900/1900/2100)
N7105: 3G (850/900/2100)
I have the N7105 but I'd like to get this note work 3G on 1900MHz. Is there any way to do this. Not sure what really does a different modem on the phone, does it allow the phone to work on different bands? (of course, if the hardware is present in the phone).
Is it possible to do this if I flash a ROM from a carrier which work 3G on 1900MHz (like ATT)? Or it is absolutely impossible to do this because of hardware limitations?
I'd like to add that if I dial and go to *#197328640# -> UMTS -> Debug Screen -> Phone control -> Network control -> Band Selection, I can see this Automatic(*) meaning that the automatic option is chosen but if I get into WCDMA Band Preference I have an option which is WCDMA 1900 but if I click just that option nothing happens. The option is present but I cannot select it, but if choose another one, let's say WCDMA 850 for example, I can select it, but of course my phone lose signal because my carrier does not work WCDMA on 850MHz. I fix this by selecting "Automatic" again just to get EDGE as the best network on this carrier.
I think there has to be a way to activate WCDMA on 1900MHz provided that the option is already there, I think the hardware IS there.
So, what should I do to get 3G 1900MHz on this N7105?
Thanks in advance.
Reinaldo.
Phone: GT-N7105
Android: 4.1.2
Band Version: N7105XXDLL5
Kernel: 3.0.31 - 795352
Compilation: JZ054K.N7105ZHDMD2
Carrier: Movistar (Venezuela)

Nyxagamemnon said:
Hi guys!
Okay, I'm doing a side by side comparison of the N7100 Vs the N7105, and one thing that is apparent to me now is.
#1) I'm in a refarmed area and I put my sim in the N7100 and bam catches HSPA+
#2) When I put the sim in the N7105 Same spot same settings( network only to WCDMA mode) I Get Nothing zip nada can't connect to the network (however AT&T's Network Shows UP), Only when I put it on GSM/WCDMA or LTE/GSM/WCDMA It's always on Edge. Can't get the HSPA+ to work on T-mobile.
So what gives? They both support the same frequency but only the n7100 is getting HSPA+? I know the N7105 has a DC42 HSPA+ modem vs the HSPA+ 21 on the N7100 but the band support is the same and just the N7105 has the LTE bands in there as well.
So why won't the N7105 Get HSPA+ Speeds on the Re farmed 1900 band?? Any suggestions?
Click to expand...
Click to collapse
Did you ever got 42 hspa+? I get 21.6 max on my n7100 on xxdlk7 modem.
I use Network Signal Pro for monitoring & talking about Net. type parameter, not actual speeds.

[Q] Using T-Mobile Galaxy Note 2 on AT&T's LTE (Will It Work if I do the Following?)

[Q] Using T-Mobile Galaxy Note 2 on AT&T's LTE (Will It Work if I do the Following?)
Can't you flash an AT&T firmware on a T-Mobile Samsung Galaxy Note 2 handset to get the necessary AT&T LTE Frequencies since the LTE radios on both AT&T's and T-Mobile's Note 2's are the exact same? Or is unlocking the Note 2 via T-Mobile more than enough to take advantage of AT&T's LTE Network?

Tread carefully, I'm currently trying to get my phone out of a rather nasty bootloop/corrupt IMEI situation after trying just that earlier today.
But I did get it to work, even pulled 35 Mbps on a speedtest.
Things went to hell after trying to revert back to the T889V modem. (In case I needed the AWS HSPA, for proof of concept and also warranty purposes).

so our phone's LTE modem is compatible with AT&T LTE bands? sweet.

^^^ Did an LTE status show up when you ran the Speedtest; this was with an AT&T Sim, right? ?

^^^ Did an LTE status show up when you ran the Speedtest; this was with an AT&T Sim, right? ?
Darkshado said:
Tread carefully, I'm currently trying to get my phone out of a rather nasty bootloop/corrupt IMEI situation after trying just that earlier today.
But I did get it to work, even pulled 35 Mbps on a speedtest.
Things went to hell after trying to revert back to the T889V modem. (In case I needed the AWS HSPA, for proof of concept and also warranty purposes).
Click to expand...
Click to collapse

Virgin Mobile Canada LTE SIM (previously confirmed working in an Galaxy S III), and yes the LTE icon showed up immediately, Speedtest says LTE too, and the speeds are way beyond what I had with HSPA in the same location.

Doesn't AT&T's LTE run on different frequencies; so will T-Mobile's Note 2 match with AT&T LTE Frequencies after flashing to AT&T's Firmware?
Darkshado said:
Virgin Mobile Canada LTE SIM (previously confirmed working in an Galaxy S III), and yes the LTE icon showed up immediately, Speedtest says LTE too, and the speeds are way beyond what I had with HSPA in the same location.
Click to expand...
Click to collapse

winlinmac001 said:
Doesn't AT&T's LTE run on different frequencies; so will T-Mobile's Note 2 match with AT&T LTE Frequencies after flashing to AT&T's Firmware?
Click to expand...
Click to collapse
Tmobile's T889 supports LTE on AWS and 700 (band 17).
AT&T's i317 supports LTE on AWS, 700 (band 17) and also on 850 and 1900 (band 2).
So yes, our phone has the ability to work on SOME of AT&T's LTE network, but not all of it; it will just depend on which frequencies they're using in your area. I believe AWS and 700 are new for AT&T, so they're probably fewer and more between at the moment, whereas their current network is mostly 1900 and 850. Not sure what kind of upgrade they have to do to switch their old HSPA 1900 towers to LTE support.

Silly question, so is a tmobile note 2 capable of handling AT&T's LTE network on the 850 and 1900 bands; is this something controlled by software, or a hardware limitation, I thought the Qualcomm radios on the AT&T variant and tmobile variant were the same.
distortedloop said:
Tmobile's T889 supports LTE on AWS and 700 (band 17).
AT&T's i317 supports LTE on AWS, 700 (band 17) and also on 850 and 1900 (band 2).
So yes, our phone has the ability to work on SOME of AT&T's LTE network, but not all of it; it will just depend on which frequencies they're using in your area. I believe AWS and 700 are new for AT&T, so they're probably fewer and more between at the moment, whereas their current network is mostly 1900 and 850. Not sure what kind of upgrade they have to do to switch their old HSPA 1900 towers to LTE support.
Click to expand...
Click to collapse

[PSA] You may be able to use HSPA+ on T-Mobile

Sorry if this is old news, I searched the forums and couldn't find a thread where this was explained.
Until recently, it wasn't possible to use HSPA+ with the Glide on T-Mobile, because T-Mo used to use different frequencies (1700/2100) than AT&T (850/1900) for it's HSPA+ service.
However, T-Mobile is migrating its HSPA+ network over to the 1900mhz band. So apparently that means that IF you are in an area where T-Mobile has already made the switch (and your phone is not carrier locked to AT&T), then you can use HSPA+ on T-Mobile.
One thing to note is- since the phone is only operating at 1900mhz and not 850mhz, the speed is cut in half (at least that is how I understand it).
So instead of getting 42Mbps you'll only be able to get 21Mbps (max). Still, it's way better than 2g. Source
Map. Twitter Feed. List.

Sorry, am I missing something? The Captivate Glide specs show it as having UMTS 850/1900/2100, so shouldn't it work both with 1900 and 2100?

rad30n said:
Sorry, am I missing something? The Captivate Glide specs show it as having UMTS 850/1900/2100, so shouldn't it work both with 1900 and 2100?
Click to expand...
Click to collapse
The way I understand it, the older T-Mo towers use both 1700mhz and 2100mhz for their HSPA+, using 1710-1755mhz for uploads and 2110-2155 for downloads. The radio's in the Glide are missing the 1700mhz band so it won't work in the areas where they haven't rolled out the switch to 1900 yet.
I am only going by what I have read on the net, so this may not be completely accurate.

DarkBlaidd said:
The way I understand it, the older T-Mo towers use both 1700mhz and 2100mhz for their HSPA+, using 1710-1755mhz for uploads and 2110-2155 for downloads. The radio's in the Glide are missing the 1700mhz band so it won't work in the areas where they haven't rolled out the switch to 1900 yet.
I am only going by what I have read on the net, so this may not be completely accurate.
Click to expand...
Click to collapse
Got it, thanks!

Unlocked sprint g8 no 3g or hspa

Im using this phone with cricket but for some reason it won't connect to 3g or hspa do anyone know why?

Perhaps because regular 2G, 3G or the faster 3G HSPA(+) on AT&T's network runs on GSM technology which is completely incompatible with the CDMA network Sprint uses for those technologies and the firmware on the Sprint variant is artificially limited to only be able to connect to CDMA and not GSM even though the phone's modem has the capability? Take what I'm saying with a grain of salt however.

DeyEatDaPooPoo said:
Perhaps because regular 2G, 3G or the faster 3G HSPA(+) on AT&T's network runs on GSM technology which is completely incompatible with the CDMA network Sprint uses for those technologies and the firmware on the Sprint variant is artificially limited to only be able to connect to CDMA and not GSM even though the phone's modem has the capability? Take what I'm saying with a grain of salt however.
Click to expand...
Click to collapse
But I get Lte working fine.

lude86 said:
But I get Lte working fine.
Click to expand...
Click to collapse
Yes, because LTE is its own technology. LTE, GSM and CDMA are each their own technologies, each completely different from the other in a multitude of ways. That's what makes one not compatible with the other, but with the advent of LTE it also made it much more cost-effective for device manufacturers to include 4G support for all major networks (provided the device supports the necessary bands and the carrier allows it, of course)... so yes, LTE should work flawlessly.

The specs on the LG Official Website for Sprint LG G8 shows it has all the 2G, 3G, and 4G bands on Cricket except it's missing B30 for 4G:
LTE Bands 1/2/3/4/5/7/8/12/13/17/20/25/26/28/40/41/46/66/71;
CDMA Band Class 0/1/10;
GSM 850/900/1800/1900 MHz;
UMTS Bands 1/2/4/5/8
Did you try to change the network mode to GSM/UMTS and reboot?

lentm said:
The specs on the LG Official Website for Sprint LG G8 shows it has all the 2G, 3G, and 4G bands on Cricket except it's missing B30 for 4G:
LTE Bands 1/2/3/4/5/7/8/12/13/17/20/25/26/28/40/41/46/66/71;
CDMA Band Class 0/1/10;
GSM 850/900/1800/1900 MHz;
UMTS Bands 1/2/4/5/8
Did you try to change the network mode to GSM/UMTS and reboot?
Click to expand...
Click to collapse
Yeah thats what I thought too but even after changing the network mode and restarting still not getting 3g data

Yes you can dial *#*#4636#*#* , go to phone information or network, look for preffered network, then select wcdma preferred, it will switch to hspa+, do note there will be no indication, only a 3g symbol on the bars. if you download network info app, it will let you see that you are indeed on hspa

Ok after many attempts to bring up my 3g inwas able to do so by going into ##data# and resetting the apn then boom 3g icon popped up. Weird because the apn was correct in the first place prior. But thanks now it works

what is the recommended network i should choose for tmobile network. i have sprint version

tdsii said:
what is the recommended network i should choose for tmobile network. i have sprint version
Click to expand...
Click to collapse
LTE. If you don't get good speeds (about 10Mbps) then change it to GSM. This is something I actually have to remember to do if I'm outside the house because I actually get more consistent performance inside my house using 3G HSPA+/GSM. On HSPA+ it goes to is 6Mbps which is plenty usable but normally it runs at 10Mbps which is more than enough for Full HD streaming whereas if I use 4G LTE under the same condition I'll either get 30Mbps or 1Mbps depending on the time of day and/or if the network is congested. 1Mbps is definitely not usable for anything but streaming at horrible quality or browsing basic webpages.