Galaxy S2 from "3" on AT&T - Galaxy S II Q&A, Help & Troubleshooting

Hey guys, looking to see if anyone can shed some light on this for me.
I m looking to get a SGS2 that was originally from the "3" network from the UK, will this work on at&t for 3g?
Thanks

google what bands 3 uses for 3g. 850/1900 are what you're looking for.

3, along with all UK networks, use the 2100MHz band for 3G/UMTS. However, the phone itself does apparently support 850/900/1900/2100MHz, so unless 3 have crippled it for whatever reason, you should be fine.

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[Q]

Hi, Just purchased the hd2 T Mobile from USA. Which carriers can I use in Canada to activate this Phone? Thanks in advance for any help you can provide.
any of them(well, except any cdma only ones) but you will need an unlock code from online or from t mobile, and you won't get 3g
Thanks for the help samsamuel. I took it to one carrier and they told me it wouldn't work. The phone is unlocked.Why wouldn't I get the 3G.I want the plan that gives me internet mobile browsing. PS it was fido I took it to.
because fido uses 1900 for 3g, from what i've read, and the tmous uses 1700/2100 for 3g., and i think rogers uses 850/1900 and maybe 1900/2100 (just skimming google for this infofact is, though, that without the 1700 aws band,, no high speed data.
you will be able to get gprs and edge for browsing, but no 3g/hsdpa.
as to them saying it won't work, they're probably either making it up or meaning 3g
most canadian users fork out the extra for the telstra model if they want 3g.
Thanks. I guess this phone is useless to me, as I wanted to be able to access the internet without using the wifi.
Redder1 said:
as I wanted to be able to access the internet
Click to expand...
Click to collapse
you can, but only with gprs / edge speeds.
I had been considering buying an HD2 and trying to unlock it for use with an AT&T sim card for my current account. I knew that their networks were compatible, but I didn't realize that hsdpa was on different frequencies. I googled around a bit and it looks like AT&T uses 1900 mhz and Tmo uses 1700/2100. I can't verify if this info is correct ,but this could sure put a dent in my plans. Does anyone know for sure if an HD2 can be used on AT&T's 3g network?
there are several threads about how you can't. go read in the tmous specific section. plenty of confirmation that it doesn't.
3G Frequencies
Hi there!
I was wondering if there is a way to change those settings?? I have a T-Mo HD2, and maybe there is a way to make the phone work with the 3G technology in other frequencies besides the 1700 and 2100 MHz (I live in latin america, so it would have to use the 850Mhz frequency) Anyone please help me with this issue.
As one who unlocked a TMoUS HD2 to AT&T I can assure you that you will not get 3G anywhere in the US or Canada that I can find. On a bright note, it's a phone... With everyone else using 3G networks I find the Edge network to be utterly "unclogged" and find the speeds to be just fine for everything including streaming video.
PS: The phone was free but without a SIM card and I was an AT&T user - not to mention T-Mobile's network leaves a lot to be desired..
There is 3g service in Canada if you happen to be in an area where Wind Mobile is available. search Wind mobile coverage area.
We (family)have several cell phones I use the HD 2 on Edge and it doesn't bother me that its a little slower, actually when I did a quick check with my daughter on her 3g I hardly could tell the difference. I' m sure some will point out where I'm wrong. But I'm satisfied with edge because I enjoy the HD2.
Wind Mobile uses 1700/2100.

[Q] Korean version GII 250S for AT&T

Hi guys.
I didn't know where to post and I have few questions on my Galaxy SII I bought from Korea and brought to USA.
I have KT's 250S galaxy SII and I'm trying to use it for At&t. I tried to put my At&t sim card in and looks like it is getting some connection. I was able to make a call.
However, looks like it's not getting any 3G connections. I heard there is some modification on the network I need to change to get 3G. Could you please let me know what should I do?
Thank you,
Andy
yubbi84 said:
Hi guys.
I didn't know where to post and I have few questions on my Galaxy SII I bought from Korea and brought to USA.
I have KT's 250S galaxy SII and I'm trying to use it for At&t. I tried to put my At&t sim card in and looks like it is getting some connection. I was able to make a call.
However, looks like it's not getting any 3G connections. I heard there is some modification on the network I need to change to get 3G. Could you please let me know what should I do?
Thank you,
Andy
Click to expand...
Click to collapse
Go to the miui thread in development section and use the apn from there. That should theoretically fix your issue...
Sent from my SGH-I777 using xda premium
yubbi84 said:
Hi guys.
I didn't know where to post and I have few questions on my Galaxy SII I bought from Korea and brought to USA.
I have KT's 250S galaxy SII and I'm trying to use it for At&t. I tried to put my At&t sim card in and looks like it is getting some connection. I was able to make a call.
However, looks like it's not getting any 3G connections. I heard there is some modification on the network I need to change to get 3G. Could you please let me know what should I do?
Thank you,
Andy
Click to expand...
Click to collapse
There is nothing you can do.
http://forum.xda-developers.com/archive/index.php/t-1052222.html
From the third post down:
Code:
<< Korea Galaxy S2 Network support >>
Double band UMTS 900/2100
Triple band GSM 900/1800/1900
<< EU Galaxy S2 band Network support>>
Quad band GSM 850/900/1800/1900
Quad band UMTS 850/900/1900/2100
AT&T and International (I9100) GSIIs support the same bands, which is why I9100s work perfectly in the US. Your device is completely missing support for the 850 MHz band (first device I've seen in years that wasn't quadband GSM other than dumbphones) and also missing support for 3G in the 1800 MHz band.
So you will not have 3G coverage anywhere, and you will completely lose coverage where AT&T uses the 850 MHz band.

[Q] Radio?

I know the Jetstream was designed to be run on AT&T and Rogers, but I am curious if it is possible to flash a radio to enable usage of T-Mobile's HSPA network, much like the Samsung Galaxy Note has been enabled to, as seen here.
Can any of the amazing Devs out there shed some light on this?
jdavis08 said:
I know the Jetstream was designed to be run on AT&T and Rogers, but I am curious if it is possible to flash a radio to enable usage of T-Mobile's HSPA network, much like the Samsung Galaxy Note has been enabled to, as seen here.
Can any of the amazing Devs out there shed some light on this?
Click to expand...
Click to collapse
jdavis08, Simple answer is yes. It is a standard 2G / 3G / LTE (AT&T / AWS band) phone. So you can use it on ANY 2G / 3G / LTE network with a SIM. But you may need to break the SIM Lock on any handset.
Just wanted to clarify. The Jetstream is 2G/3G/LTE /capable, 2G (GSM): 850/900/1800/1900MHz, 3G (UMTS/HSPA): 850/1900/2100, and LTE: 700mhz & AWS-1700/2100.
Currently, T-Mobile only uses the AWS for their HSPA+ network, not LTE (from what I understand, AWS will be transitioned for LTE and 1900mhz refarmed for 3G/4G early 2013) - and if I'm not mistaken, the HSPA+ is only supported by the "3G" band of this device, not the "LTE"
So - to make a long story short. I am a T-Mobile subscriber with various "4G" phones from T-Mobile. Their 4G only works if the phone has a radio with AWS for HSPA as T-Mobile (unlike AT&T) does not use the 1900mhz for their HSPA (yet). I own this tablet.. It has been SIM unlocked and it simply does not get anything above EDGE... and I live near and visit major cities in Washington State, Seattle/Bellevue/Tacoma, which definitely have TMo's 4G coverage.
I know I should just cool my jets until TMo rolls out the network upgrades, as I have no interest in joining AT&T. I was just curious if there was some way to "trick" the phone to use the AWS frequencies for HSPA, like the Galaxy Note has been made to do as the radio specs are identical.
I know that the Note was enabled to do this by flashing another radio. Support is minimal for the Jetstream these days... so I was just reaching out.
Thanks guys

[Q] Samsung Galaxy S3 AT&T SGH-i747 3G not working in India

Hi,
Recently I happen to move to India from USA. I had Samsung Galaxy S3 - SGH i747 purchased in in US, which was under 2 year contract. I tried to call AT&T guys to give me unlock code but they didn't give me since my contract was not over.
I moved to India and tried to unlock my phone from local shop. I am able to make/receive calls now having these issues.
1. 3G is not working . When I see different available bands in my phone using *#2263#, it shows WCDMA 850, 900, 1700, 1900 and WCDMS IMT2000 under WCDMA band preferences. I am using Vodafone in India which runs on UMTS 2100. I visited Vodafone store couple of times but they are not able to help me. How do I get 2100 frequency in my phone ?
2. Currently I have set preference to run my phone on GSM Band so 2G is working. There are certain areas in my city where Vodafone 2G is also not working. In those areas, I don't receive any call even though I have very good network coverage. I tried switching off my mobile network in case I can receive calls but its of no help.
Request for your to resolve this. I am fed up with this nice working phone and need to purchase new one if these issues don't get resolved.
Thanks

Will G850f work in the USA?

Hey.
Please tell me if Galaxy Alpha G850f will work normally in the USA?
All I know is that there are different frequencies in the USA and Europe. Do my european model G850F support both of it?
From the spec I saw, you may get 3G on AT&T. Not so much on T-Mobile because the lack of 1700MHz band support that is still in use by T-Mobile 3G in many places. The LTE bands are probably not going to work. Of course, CDMA carriers like Verizon and Sprint will never work. So, you are guaranteed to have 2G data (which is like dial-up modem speed) if you choose a GSM carrier. Everything else depends.
I had 85of on att it is very fast hspa plus. No lte

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