Unlocked infuse with tmobile on att band - Samsung Infuse 4G

I have a question for anyone to anwser. I have an unlocked infuse on tmobile service. We all know that the phone will only get 3G because tmobile and att use different bands. I recently was playing with the network setting and had the option to pick tmobile or att network. Well I pick the att network to see what it would do. Sure enough, I'm on atts network getting faster speeds. My question is what happends if I leave it on this setting? Will I get crazy charges from tmobile?
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Are u sure u get 3G speed on tmobile ?
What i know tmobile uses 1700 for 3G and infuse does not have that band on ......I may be wrong.

Not sure. I do know when I'm on tmobie settings the data icon says G and E from time to time. And when I'm on the att setting it says H. And my speeds are faster
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Anyone else have an answer?
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rmsmerd said:
Anyone else have an answer?
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As you know, the AT&T and T-Mobile merger failed. As part of the agreement, the two companies have entered a roaming agreement where-in T-Mobile's customers can roam on AT&T's 1900Mhz 3G network as long as the phone supports that frequency.
You may want to contact T-Mobile if you're concerned about excessive roaming on AT&T.

t-mobile is "refarming" with 1900mhz support. So you might be the lucky one.
Curious, what city/state are you in?

I'm in lewiston maine
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Related

[Q] Can GS 4G do TMo & ATT 3G?

Hi, am leaving Sprint. Looking to get a used phone (no contract), that will work on monthly plans like TMo prepaid, Straight Talk (ATT)) w/out a contract. I'm reading good things about both the older Vibrant (SGH-T959), and the newer 4g (SGH-T959V). It's clear from my research that people are successuflly unlocking and able to go back and forth between TMo and ATT SIMs on the older Vibrant. What isn't clear to me is can this be done on the newer SGH-T959V?
Again, I don't care much about 4g. 3g on AT&T is fine. But while on TMo, the 4G would be nice.
Thanks!
diffdrummer said:
Hi, am leaving Sprint. Looking to get a used phone (no contract), that will work on monthly plans like TMo prepaid, Straight Talk (ATT)) w/out a contract. I'm reading good things about both the older Vibrant (SGH-T959), and the newer 4g (SGH-T959V). It's clear from my research that people are successuflly unlocking and able to go back and forth between TMo and ATT SIMs on the older Vibrant. What isn't clear to me is can this be done on the newer SGH-T959V?
Again, I don't care much about 4g. 3g on AT&T is fine. But while on TMo, the 4G would be nice.
Thanks!
Click to expand...
Click to collapse
U can use 4g on tmobile but on AT&T you can only use 2g/edge no 3g
Sent from my SGH-T959V using XDA App
Thanks Brandon. I will then pick up a used, older SGH-T959 (Vibrant), unlock it, and then enjoy the 3g flexibility of both ATT & TMo. It's strange, the T959V is supposed to support the same ATT 3g band as the regular T959, but I can't find proof of this anywhere.
diffdrummer said:
Thanks Brandon. I will then pick up a used, older SGH-T959 (Vibrant), unlock it, and then enjoy the 3g flexibility of both ATT & TMo. It's strange, the T959V is supposed to support the same ATT 3g band as the regular T959, but I can't find proof of this anywhere.
Click to expand...
Click to collapse
oh wait...i didn't know that the vibrant was able to get 3g on ATT ..maybe the sgs4g can support 3g on ATT too..i really don't know..i never knew the vibrant could
Both can use 3g
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The captivate can only get edge on Tmobile
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mbernusg said:
Both can use 3g
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that's affirmative, i'm using it right now with 3G and is very fast
Yes, I also can confirm the 959V (T-Mobile 4g) is 3g on ATT and is very fast.
Not true...
brandond15 said:
U can use 4g on tmobile but on AT&T you can only use 2g/edge no 3g
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I have SGS4G and am using ATT. I have 3G with no issues...
posted original question here by accident
I am using unlocked 4g on Cincinnati Bell wireless and the 3g works fine.
However I have not been able to get 4g at all on my phone. When I put a Tmobile sim in it works fine one 4g.
I get a little over 2 mbps download on Cincinnati Bell 3g.
You can just unlock it, I'm using mine on att right now. Only thing is you have a backup sync for T-Mobile instead of att.
Sent from my SGH-T959V using XDA App
Yes it can.
I tried my friend's AT&T sim card and it worked with 3G.
Hmm, has anybody gotten 4G on this phone with AT&T?
Does 4G work with an unlocked SGS 4G on AT&Ts network?
no.
Sent from my myTouch_4G_Slide using XDA App
3G on AT&T will only work one one of the two UMTS bands: 1900 MHz.
Note that the Vibrant 4G doesn't have the 850MHz band (the other band that AT&T uses for 3G data.)
I've seen a posting that there's a way to activate the 850MHz band, but I have not verified that this works. If anyone has got this working so you're working on both bands on AT&T with your Vibrant 4G, let me know.
As an addendum to my own post, looks like the consensus is that while the Vibrant has an option of selecting the 850MHz UMTS band, it actually doesn't enable anything:
forum.xda-developers.com/showthread.php?t=868478&page=2
Has anyone speed tested (w/ dual core tele) ST tmo?? Please share speed test results?? ..speed test (dual core) on Simple Mobile 4g plan appreciated too. I'm looking for these comparisons...Help please?
TIA!

P6200 US 3G At&t or T-Mobile?

I'm currently deployed in Afghanistan and ordered the 6200 to work with GPRS out here, sadly enough that's the only reliable data connection available. I googled at&t and T-Mobile frequency bands but I'm not exactly sure what I'm looking at.
Could someone please let me know which carrier I'll be able to use this on with 3G when I return home next year? Thanks!
Sent from my E4GT using xda premium
As long as it is sim unlocked then it should (technically) work with either one on 3G since AT&T uses the 850/1900MHz frequency and T-Mobile uses the 1700/2100MHz. The model you have (P6200) is listed for 900/1900/2100MHz frequencies for 3G.
It will work on both of them under 2G for sure since it is quad-band GSM.
http://www.gsmarena.com/samsung_p6200_galaxy_tab_7_0_plus-4208.php
http://en.wikipedia.org/wiki/T-Mobile_USA
http://en.wikipedia.org/wiki/AT&T_Mobility
This is just a guess based on what little I know about these things so I can't guarantee this.
scottypimpin636 said:
I'm currently deployed in Afghanistan and ordered the 6200 to work with GPRS out here, sadly enough that's the only reliable data connection available. I googled at&t and T-Mobile frequency bands but I'm not exactly sure what I'm looking at.
Could someone please let me know which carrier I'll be able to use this on with 3G when I return home next year? Thanks!
Sent from my E4GT using xda premium
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That's exactly what I'm confused about. If T-Mobile uses 1700/2100 does that mean the device only needs to support 2100 or both?
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It will only works on att, I have the same unlocked phone, tried tmo and only getting edge. Yea, mine comes with phone ability and unlocked

tmobile unlocked sensation on net 10 only getting edge

So as the title says.
Im using my unlocked Sensation on USA's Net10 network but am only getting edge data.
I have tried changing to different suggested apns and changed radio settings but only end up getting edge. It should be able to use att's gsm networks as its able to just fine in similar networks in canada.
Has anyone else gotten 3g to work with the sensation and net10?
Why don't you use straight talk or simple mobile.
Sent from my HTC Sensation using xda app-developers app
that doesnt help my problem. and i thought straight talk was basically the same company anyway.
its not my phone plan. just a friend using my phone temporarily and me trying to get it working completely.
can anyone help me on this?
If Net 10 is on AT&T's network, I think you are stuck with 2G speeds.
It's not an APN issue. It's a psysical radio hardware issue. The radio itself is set up to get the T Mobile frequency bands (Or whatever carrier the phoen was originally sold on), which are different than AT&T's.
The only overlap on the carriers is the 2G bands.
No software changes can correct this.
You can get 4G on a sensation with s.talk.
Sent from my HTC Sensation using xda app-developers app

HTC One X Straight talk network

Hey crew so I am using this beast of a phone on ST with T-Mobile. I actually called At&T myself to get the unlock code and they actually gave it to me!( Ive never been with At&t)
So now that I got this bad boy rolling with T-mobile straight talk( because AT&T on ST throttles you nasty!) I have noticed that there are several network types.
Which one is the best one for T-Mobile since in my area they have upgraded their towers to 1900/2100. I cant use LTE on ST period, but i can use HSPA+ with T-mobile. What are you guys using for those of you using this phone with T-Mobile?
Jess813 said:
Hey crew so I am using this beast of a phone on ST with T-Mobile. I actually called At&T myself to get the unlock code and they actually gave it to me!( Ive never been with At&t)
So now that I got this bad boy rolling with T-mobile straight talk( because AT&T on ST throttles you nasty!) I have noticed that there are several network types.
Which one is the best one for T-Mobile since in my area they have upgraded their towers to 1900/2100. I cant use LTE on ST period, but i can use HSPA+ with T-mobile. What are you guys using for those of you using this phone with T-Mobile?
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Click to collapse
Well I don't have t mobile, but I am not in an LTE area. However, LTE devices are backward compatible. So you can use the highest settings for the carrier. I'm pretty sure t mobile is still on Hspa+. So using those settings would work. If not Google for the APN settings
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This is what I'm talking about
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Jess813 said:
This is what I'm talking about
Sent from my HTC One X using Tapatalk 2
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Oh. In that case, that last option should work. T-Mobile is a GSM provider, but you want those HSPA+ speeds, so LTE should fallback to that. If you select GSM, you ,ay get GPRS or EDGE speeds.

[Q] WIlling to buy a friends´s Blaze for cheap. How can I get 3G using At&t?

Hello, a friend of mine of selling a mint Blaze at a great price. Phone is unlocked and I have service with At&t. However, when I insert the sim only get Edge. Is there any way to flash At&t radios to the blaze? I did search before opening a new thread,,, but wasn´t able to get the info I need.
Any help would be very appreciated!
Thanks!
Nope...edge only
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Are you sure? my wife uses the Tmobile s3 with Att and gets 3g. could be this phone runs different frequency's?
Sent from my SAMSUNG-SGH-T769 using xda app-developers app
He's wrong. It'll run on their H+ network, but that's all. However ATT's H+ mind you is very congested in a lot of places (NYC especially), but it will run.
tzvblsm said:
Are you sure? my wife uses the Tmobile s3 with Att and gets 3g. could be this phone runs different frequency's?
Sent from my SAMSUNG-SGH-T769 using xda app-developers app
Click to expand...
Click to collapse
It has multiple bands right?
iSkylla said:
He's wrong. It'll run on their H+ network, but that's all. However ATT's H+ mind you is very congested in a lot of places (NYC especially), but it will run.
Click to expand...
Click to collapse
So, At&t adopted hspa for T-Mobile
Sent from my SAMSUNG-SGH-T769 using Tapatalk 4 Beta
Your right its really bad in NYC.
Sent from my SAMSUNG-SGH-T769 using xda app-developers app
Why are you not using T-Mo? Bad in brooklyn?
Should be able to get hspa+ flash a at&t skyrocket radio fix your apn,
I know it works when using T-Mobile on at&t phones I just flashed T-Mobile radios fixed apn got hspa+ speeds, should work vice versa
Edit: heres some at&t radio's that can be flashed http://forum.xda-developers.com/showthread.php?t=2270071
I have a Blaze running on NET10 using the AT&T sim card. I can achieve H+ with it, and from time to time it shows me 3G then goes to H+ real quick.
I am able to get (depending on where I am here in Central Indiana) 1-2Mbps with H+ and in other areas I get 12Mbps with H+. Here at the house I show H+ with 3 bars right now and get 1.75Mbps down and 0.42Mbps with a ping of 148ms to a speed test site just 16 miles up the road.
I do have to say it is much better then Tmobile here, I was lucky to get 0.17kbps either way on Edge.
I can tell you that it will help you if you go into your settings and select mobile networks then mobile operators and set yourself to AT&T Network only, let me know if this helps any, it did for me. It has kept me from trying to hit Tmobile towers since I am on NET10 which uses both tmobile and att.

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