Develop Bugs

T-Mobile S3 unlocked on AT&T

So after some reading around the web, I'm still a little confused about something. Will an unlocked T-Mobile S3 work with AT&T 3G bands? Don't really care anything about 4G so that isn't an issue.
Sent from my Galaxy Note on XDA Premium

Yes

I was thinking it had pentaband, but wasnt sure. Any chance you know if it'd involve flashing AT&T radios like on the Tmobile S2, or would it just work?

It will work

the Tmobile default radio is set to the 1700/2100 MHZ bands...AT&T uses 850/1900/2100 for their 3G.
I believe you'll have to flash an at&t radio in order for it to work on AT&T's 3G network.

babymatteo said:
the Tmobile default radio is set to the 1700/2100 MHZ bands...AT&T uses 850/1900/2100 for their 3G.
I believe you'll have to flash an at&t radio in order for it to work on AT&T's 3G network.
Click to expand...
Click to collapse
See that's what I'm thinking, have an opportunity to trade my i717 for an S3, but I'm debating lol. Not really worried about IF it's possible to flash radios, more so worried about WHEN :/.

I have an unlocked S3 from Tmobile that I was planning on using with my ATT line, but noticed no data working. I read that I have to flash the modem, but can't find the modem files or any directions. Been searching the forums for a few days and the closest I came to it is this thread.

For anyone still wondering, no radio flash is needed. All I did was add the apn setting (either wap.cingular or pta) and data started flowing. Getting decent HSPA speeds.

If anyone does need the CWM flashable AT&T modems, they're right here:
http://forum.xda-developers.com/showthread.php?t=1831898
There is also a link in the OP (in the link above) to a stand-alone modem flashing tool.
A simple browsing of the "AT&T Galaxy S III Android Development" section would have revealed this to anyone looking...
Enjoy!

It worked!
shareef777 said:
For anyone still wondering, no radio flash is needed. All I did was add the apn setting (either wap.cingular or pta) and data started flowing. Getting decent HSPA speeds.
Click to expand...
Click to collapse
I unlcoked my phone last night, only to find out that i was getting no data. I did just that: added an APN with wap.cingular and i could see the 3G start to appear by the signal bars.
Now I can use my old AT&T sim card (from iphone 4) in my brand new Samsung Galaxy S3.
Disaster averted!
Thanks!

question for you....
:
jzavaleta said:
I unlcoked my phone last night, only to find out that i was getting no data. I did just that: added an APN with wap.cingular and i could see the 3G start to appear by the signal bars.
Now I can use my old AT&T sim card (from iphone 4) in my brand new Samsung Galaxy S3.
Disaster averted!
Thanks!
Click to expand...
Click to collapse
did you have any issues with MMS after you changed your APN settings? i also did the "PTA" change on an S3 unlocked from tmobile, but im having issues w MMS any thoughts?

LTE -- install AT&T stock rom in T-Mobile rooted phone?

I have a T-Mobile GN2, and have both TMO and AT&T sim cards. Right now when I plug in the AT&T sim card, I get 4G signals.
Since both devices are identical (based on a 3rd party site), can we install the AT&T rom in an unlocked and rooted TMO GN2, and thereby enabling the LTE functionality??
Or will such attempt brick the phone??

What data plan do you have with your ATT sim? You need a LTE sim and an LTE enable data plan with the APN on the phone before even testing to see if LTE works out of the box. Im wondering the same about the status of the LTE radio on the TMO Note 2. Let me know if you find out anything new.

Free unlock method.

Edit: this method works for everyone it seems. SOME HAVE REPORTED SLOWER T-MOBILE DATA SPEEDS AFTER APLLYING THIS UNLOCK. This has only been reported a few times and it seems like flukes. I however, nor the OP in the linked thread are responsible for wjat YOU chose to do to your device. You have been warned.
http://forum.xda-developers.com/showthread.php?p=34661189
Unlock for 7105 from diagnostic screen.
Trying it now but dont have a sim to check with. Well I have my old verizon one but dont know if it will work.

_Dennis_ said:
http://forum.xda-developers.com/showthread.php?p=34661189
Unlock for 7105 from diagnostic screen.
Trying it now but dont have a sim to check with. Well I have my old verizon one but dont know if it will work.
Click to expand...
Click to collapse
What was the default value of "Perso SHA256 "....I changed mine to off but forgot to check the original value...original value should be in Perso SHA256 Flag info

Seemed to work with verizon sim. No longer get the input sim unlock number, but obviously no signal.

hkfan said:
What was the default value of "Perso SHA256 "....I changed mine to off but forgot to check the original value...original value should be in Perso SHA256 Flag info
Click to expand...
Click to collapse
Not sure already changed mine. I assume [1] or on

_Dennis_ said:
Seemed to work with verizon sim. No longer get the input sim unlock number, but obviously no signal.
Click to expand...
Click to collapse
Phone wont even get GSM signal ? I thought this phone does support 1900 Mhz which verizon also uses.

hkfan said:
Phone wont even get GSM signal ? I thought this phone does support 1900 Mhz which verizon also uses.
Click to expand...
Click to collapse
It got a signal. But could not pick up carrier or anything just had signal and said searching in notification bar.
But verizon is CDMA so it did not supprise me.

I see that the LTE radio bands are in there, no surprise there. But I also see WCDMA radio bands too. Does that mean that our Galaxy Note 2 have WCDMA radio too? Or is this just an firmware that Samsung uses across all Galaxy Note 2 devices?

I need to try this I have a at&t sim card.
Sent from my SGH-T889 using xda premium

JaguarXT said:
I see that the LTE radio bands are in there, no surprise there. But I also see WCDMA radio bands too. Does that mean that our Galaxy Note 2 have WCDMA radio too? Or is this just an firmware that Samsung uses across all Galaxy Note 2 devices?
Click to expand...
Click to collapse
I think we have CDMA also....not that it does much for us as verizon and sprint require the imei to be loaded into their systems.
WCDMA != CDMA by the way. WCDMA is 3G/4G GSM (aka UMTS)
CDMA is a competitor to GSM. It is used by mainly North American and Japanese/Chinese cell phone companies.
I know Verizon and Sprint in the US and AU in Japan use CDMA. Most of the world uses GSM.

All though thinking about it while we may have the CDMA radio, assuming it is the same chip as the GSM and LTE radio then they may have just not sokdered the connections. Seen that before with FM radios built into the bluetooth chip on the Atrix 4G

Which of the bands are our 4G?
Love learning.

JaguarXT said:
Which of the bands are our 4G?
Love learning.
Click to expand...
Click to collapse
Our 4G is UMTS band 4 (1700/2100) same as our 3G. We dont have LTE yet so no *true* 4G

Sweet.
Thank you.

No problems. This kinda stuff is my hobby. Maybe some day I can get a job at a cell phone company as a technician or something.

I can confirm this works, but I could not get data. I got signal and a carrier name with both an AT&T sim and a Straight Talk (AT&T) sim. It would not load APNs, and I don't have the APN for regular AT&T so I tried with the Straight Talk, put in their APN and still got no data. Neither sim is active currently. It did allow me to call 611 on both sims.

dj_spore said:
I can confirm this works, but I could not get data. I got signal and a carrier name with both an AT&T sim and a Straight Talk (AT&T) sim. It would not load APNs, and I don't have the APN for regular AT&T so I tried with the Straight Talk, put in their APN and still got no data. Neither sim is active currently. It did allow me to call 611 on both sims.
Click to expand...
Click to collapse
If neither sim is active then I dont think it will allow data. Not sure though.

dj_spore said:
I can confirm this works, but I could not get data. I got signal and a carrier name with both an AT&T sim and a Straight Talk (AT&T) sim. It would not load APNs, and I don't have the APN for regular AT&T so I tried with the Straight Talk, put in their APN and still got no data. Neither sim is active currently. It did allow me to call 611 on both sims.
Click to expand...
Click to collapse
Just found my roommates active AT&T sim, tried it, and still no data. I put in the APN found here: http://forum.xda-developers.com/showthread.php?t=1684711...
Phone calls work just fine...

dj_spore said:
Just found my roommates active AT&T sim, tried it, and still no data. I put in the APN found here: http://forum.xda-developers.com/showthread.php?t=1684711...
Phone calls work just fine...
Click to expand...
Click to collapse
Hum...I need to get my hands on a microSIM. I have some experience playing with APNs from my days in Japan.

It didnt work for me
Sent from my SGH-T889 using xda premium

Thank you for sharing. It works for me. I tried it with my brother att sim. I was able to make and receive phone call with no problem.

[Q] model SM-900W8 bands and questions

so i just got my SM-900W8 for Wind mobile today, had to buy it with two months service, but then was able to send half of the money i put down on that service over to my old account, switch the sims, and now i have my same old number and plan on my new note, and i'm only out an extra 20 bucks (still bull****, i know, but i wanted it today and wasn't going to deal with waiting, for any reason.... maybe too impatient lol)
anyways, after i bought it, i stopped by the bell store and asked what model they sell... they showed me the box and it was the exact same model number... SM-900W8. i then went to rogers, same thing, and telus i presume will be the same since bell and telus share towers etc
so, my question is, if i unlocked my phone, could i simply go get a bell rogers or telus sim card, and throw it in, and have it work? the region issue is a non-starter for two reasons - first i didn't even have that region lock sticker on my box, but second, the robelus sims would all be the same region, so it shouldn't matter in the least. what i'm wondering is, would the bands be the same, or at least some of the same to the point of working? i know that wind uses AWS bands and robelus does not, but since they are the same model number, is it possible that they have radios that are compatible with all four carriers in this phone?
if not, can someone explain to me how to find out what networks this phone would work on? i mean, it sounds like people are unlocking their tmobile phone and using it on att, and from what i remembered, att is not aws, and i thought that rogers and att phones worked together... ARGG what gives here?
also, are the tmo phones the same model number as mine? or did they use different phones than wind this time around?
finally, if i'm looking to root this or put a rom on this, am i looking for the tmo roms and other stuff like i was with my sgs3 or am i looking for something else with this new phone? where can i find this info... i haven't been able to find much about this yet, i guess not many people have this phone on wind yet

W8 model also has AWS HSPA and LTE.
Check phonescoop.

mingkee said:
W8 model also has AWS HSPA and LTE.
Check phonescoop.
Click to expand...
Click to collapse
Thanks for the answer, but I don't know for sure what bands the big three use, can anyone tell me if this phone will work on those big networks?
Also, any answers to my other questions ?

Rogers, Bell and Wind all use the SM-900W8 variant probably with just a different modem / QCP file.

So does this mean that there is some chance of, in the future when things get cracked, of flashing a new modem etc onto it our something

asaqwert said:
So does this mean that there is some chance of, in the future when things get cracked, of flashing a new modem etc onto it our something
Click to expand...
Click to collapse
to answer my own question, yes, i unlocked my n900w8 from wind with an unlock code, and i was able to see whatever networks were attached to the sim i put in it. rogers, bell, telus, koodo, virgin, fido, wind, probabaly chatr if you really wanted to use this device on that dumb ass carrier
so yes, you dont even need to flash other modems... it just works
i did try flashing bell/rogers/puerto rico roms on my device and all had the same result, it all worked, and it all worked fine

Samsung galaxy note 3 SM-N900W8 from videotron (canada)
Hi, i have a Samsung galaxy note 3 SM-N900W8 from videotron (canada) and i unlock with a code to use it with fido and the phone show only the 3G internet, is there a way to enable the LTE? when i go to setting mobile network, network mode show me only 3 options WCDMA/GSM (auto connect) or WCDMA only or GSM only. I tried to root the device to do like this forum said ( http://forum.xda-developers.com/showthread.php?t=2489766 ) and when i root it it says pass but it stuck on rebooting and something red is written on the next line and samsung logo is there too. anyone can help me to enable the LTE network?

Help needed: trying to mod my notification bar

I have a t889v running rooted stock 4.4.2 build #kot49h t889vvludnh2, which is the newest build for my phone, i'm trying to mod the battery percentage, i want it to be larger in size so i can see it better. I have tried various mods on the exposed installer i.e. wanam etc. none seem to work, so i would like to use root explorer and change the setting in build prop, the problem is i don't know where to look. if anyone knows where i need to go and what lines to adjust it would be much appreciated. thanks in advance

droido101 said:
I have a t889v running rooted stock 4.4.2 build #kot49h t889vvludnh2, which is the newest build for my phone, i'm trying to mod the battery percentage, i want it to be larger in size so i can see it better. I have tried various mods on the exposed installer i.e. wanam etc. none seem to work, so i would like to use root explorer and change the setting in build prop, the problem is i don't know where to look. if anyone knows where i need to go and what lines to adjust it would be much appreciated. thanks in advance
Click to expand...
Click to collapse
here is a screenshot of what i would like to do.

droido101 said:
here is a screenshot of what i would like to do.
Click to expand...
Click to collapse
Do you happen to know what is new with the t889vvludnh2 ROM? I can't find any information anywhere on this update. My assumption was that LTE was enabled. But I am not sure.

subaron said:
Do you happen to know what is new with the t889vvludnh2 ROM? I can't find any information anywhere on this update. My assumption was that LTE was enabled. But I am not sure.
Click to expand...
Click to collapse
i don't see much deference between this and the last rom. I don't see LTE anywhere in the network selection it's still gsm or wcdma
edit: just went into service mode and there is awhole bunch 0f LTE bands, so it seems we have LTE now. For service mode type *#2263# into the dialer and you should see a screen come up with all the band selection. i'm on wind so we do not have LTE service so there is no way to test if LTE works.

droido101 said:
i don't see much deference between this and the last rom. I don't see LTE anywhere in the network selection it's still gsm or wcdma
edit: just went into service mode and there is awhole bunch 0f LTE bands, so it seems we have LTE now. For service mode type *#2263# into the dialer and you should see a screen come up with all the band selection. i'm on wind so we do not have LTE service so there is no way to test if LTE works.
Click to expand...
Click to collapse
I have a windmobile T889v unlocked as well. I am currently in the states and I tried a T-Mobile sim card and did not get LTE. Only 3G. Maybe the LTE bands enabled on our phones are only for the videotron LTE bands?
Hopefully, someone on videotron can chime in.
I will try to get hold of ATT sim card to try.

subaron said:
I have a windmobile T889v unlocked as well. I am currently in the states and I tried a T-Mobile sim card and did not get LTE. Only 3G. Maybe the LTE bands enabled on our phones are only for the videotron LTE bands?
Hopefully, someone on videotron can chime in.
I will try to get hold of ATT sim card to try.
Click to expand...
Click to collapse
Which APN did you use? Which part of the US were you in? Not all areas are covered by LTE service.

I am in LA.
It was the APN that was pre-programmed into the T-Mobile sim card. I didn't modify anything. My buddies Nexus 5 was getting LTE and he didn't program any APNs either.
While at the same location when I swapped it in my T889V I only saw 3G (in settings > about I saw HSPA and HSPA+). But def not LTE.

subaron said:
I am in LA.
It was the APN that was pre-programmed into the T-Mobile sim card. I didn't modify anything. My buddies Nexus 5 was getting LTE and he didn't program any APNs either.
While at the same location when I swapped it in my T889V I only saw 3G (in settings > about I saw HSPA and HSPA+). But def not LTE.
Click to expand...
Click to collapse
I got a hold of an ATT sim card with LTE service, and only got 3G speeds. Tested the speed on the T889v and an LTE enabled phone with the speed test app. So on T889v def 3G(HSPA) speeds, while on the LTE device LTE like speeds.
Anyone know which LTE band videotron enabled? I thought it was Band 4 (AWS band).
The only other thing I can think of is that the I am using the Windmobile firmware update for T889V and perhaps the version for Videotron is different even though the baseband is the same version.
I had been assuming that Videotron, WIndmobile and Mobilicity were all using the same firmware since the baseband is exactly the same.
Anyone with Videotron T889V with stock baseband upgrade getting LTE speeds?

Bump