[Q] Will At&t i777 work in UK? - AT&T Samsung Galaxy S II SGH-I777

Hey guys, just about to trade and get one of these, I just want to know if it can work in the UK because At&t is USA based. Will my O2 sim work in it by using the app from the market which carrier unlocks it?
No comments about my username please

sensation lover said:
Hey guys, just about to trade and get one of these, I just want to know if it can work in the UK because At&t is USA based. Will my O2 sim work in it by using the app from the market which carrier unlocks it?
No comments about my username please
Click to expand...
Click to collapse
It'll probably work but I don't think o2 supports the 3g bands our phone uses so you'll be running on edge
Sent from my SGH-I777 using Tapatalk 2 Beta-5

thanks,
I searched up o2's 3g bands and it came up with, 850,900 and 1800.
The samsung galaxy s2 i777 model bands: Quad-Band 850/900/1800/1900 MHz, 3G EURO/AT&T AND 3G Network HSDPA 850 / 1900 / 2100
So it could possibly work. I don't use 3G much anyway, I only get 2g in my area and at school I get HSDPA. Might ask the trader if i can trial the:
a) sim
b) network connection bands

sensation lover said:
thanks,
I searched up o2's 3g bands and it came up with, 850,900 and 1800.
The samsung galaxy s2 i777 model bands: Quad-Band 850/900/1800/1900 MHz, 3G EURO/AT&T AND 3G Network HSDPA 850 / 1900 / 2100
So it could possibly work. I don't use 3G much anyway, I only get 2g in my area and at school I get HSDPA. Might ask the trader if i can trial the:
a) sim
b) network connection bands
Click to expand...
Click to collapse
Just might have to make sure you are not in a 1900 mhz band area
Sent from my SGH-I777 using Tapatalk 2 Beta-5

Just FYI, only ONE of the frequencies need to match for you to get 3G, they don't send out one frequency at a time.

Related

[Q] EU(UK) galaxy s2(i9100) support ATT 850/1900 UMTS frequencies?

I've seen this blog.
http://blog.clove.co.uk/2011/04/12/samsung-galaxy-s-ii-umts-frequencies/
However, with our experience in the industry we have seen that almost every device launched in recent years within Europe has been ‘optimised’, with the American 850/1900 range locked down, leaving only 900/2100 for the rest of the world. As we are based in the UK it is for this reason we have taken the tentative step of advertising only these frequencies.
Click to expand...
Click to collapse
yeah, UK clove store said EU galaxy S2 doesn't support US 850/1900
network. (They said that may be US 850/1900 UMTS frequencies are locked.)
But, I find google news.
http://www.mydaily-gadget.com/news/5718-att-getting-samsung-galaxy-s2-gt-i9100-fcc-says-i-do
Speaking about release dates we do not have a specific one for the GT-i9100 in the USA but we can confirm the FFC has authorized the use of this particular smart phone on the 850MHz and 1900MHz GSM frequencies which means the first carrier to offer the Samsung Galaxy S II might be AT&T. These two frequencies account for the AT&T 3G network but they also match some Canada operator’s frequencies so there is a big chance the Galaxy S II will land there too in the near future.
Click to expand...
Click to collapse
Follow this news, EU galaxy S2 using US GSM 850/1900 networks.
Who is say that TRUE?
i'm very confused.
Quad band GSM 850/900/1800/1900
Source: http://www.samsung.com/global/microsite/galaxys2/html/specification.html
It should work.
apwhitelaw said:
Quad band GSM 850/900/1800/1900
Source: http://www.samsung.com/global/microsite/galaxys2/html/specification.html
It should work.
Click to expand...
Click to collapse
So, only using ATT GSM network?
ATT UMTS network can't use?
Pulverizer said:
I've seen this blog.
http://blog.clove.co.uk/2011/04/12/samsung-galaxy-s-ii-umts-frequencies/
yeah, UK clove store said EU galaxy S2 doesn't support US 850/1900
network. (They said that may be US 850/1900 UMTS frequencies are locked.)
But, I find google news.
http://www.mydaily-gadget.com/news/5718-att-getting-samsung-galaxy-s2-gt-i9100-fcc-says-i-do
Follow this news, EU galaxy S2 using US GSM 850/1900 networks.
Who is say that TRUE?
i'm very confused.
Click to expand...
Click to collapse
That first link (that I provided earlier tonight I think) - read it to the end please, Clove has all the info on that page, just finish reading it. sorry for the tone , but I think you did not pay enough attention - there are comments to that blog post that say clove confirmed with the manufacturer and local distributor that all 4 bands are present.
I'm confused here
I have SGSII ordered from Clove. I plan to use it with ATT sim card. Have I made a mistake? Will I be able to use it? Do I need to cancel?
I hope it works well with AT&T since I intend to get this phone.
My current (imported) GT-i9000 did not properly support AT&T and has very poor call quality and call drop issues.
Sent from my Xoom using XDA Premium App
Although Clove originally said they doubted it would support 850/1900 3G+, they did later confirm their stock would be quad-band 3G. So no need to worry about support for NAM 3G.
Once someone get's the GS2 in USA on ATT, can you confirm that it indeed works on Edge AND 3G?
kurtkbee said:
I hope it works well with AT&T since I intend to get this phone.
My current (imported) GT-i9000 did not properly support AT&T and has very poor call quality and call drop issues.
Sent from my Xoom using XDA Premium App
Click to expand...
Click to collapse
That's because the i9000 is only tri-band UMTS and only supports AT&T's 1900 frequency. When it gets to an area where the 1900 H/3G signal is weak, it can't switch over to the 850 UMTS simply because its hardware doesn't support it. So, then the phone call drops. You'll notice if you switch the i9000 to 2G/Edge, you'll never get a dropped call... because it's quad band GSM.
Also, ever notice you never get dropped calls when stationary and on H/3G? That's because with a solid 1900 UMTS signal, the i9000 will never search for the unsupported 850 band.
(And yes, I have confirmed all of this as I also own an i9000.)
i9100 supports quad-band UMTS with 850/1900 H/3G, so you will not have the frequent dropped calls anymore.
Here are the frequencies for AT&T: http://en.wikipedia.org/wiki/AT&T_Mobility#Radio_Frequency_Summary
Frequencies used on the AT&T Network
850 MHz GSM/GPRS/EDGE 2G
1900 MHz GSM/GPRS/EDGE 2G
850 MHz UMTS/HSPA 3G
1900 MHz UMTS/HSPA 3G
700 MHz LTE 4G
So, the i9100 International will do almost all. Except LTE.
pepemosca said:
Here are the frequencies for AT&T: http://en.wikipedia.org/wiki/AT&T_Mobility#Radio_Frequency_Summary
Frequencies used on the AT&T Network
850 MHz GSM/GPRS/EDGE 2G
1900 MHz GSM/GPRS/EDGE 2G
850 MHz UMTS/HSPA 3G
1900 MHz UMTS/HSPA 3G
700 MHz LTE 4G
So, the i9100 International will do almost all. Except LTE.
Click to expand...
Click to collapse
Thanks for your information.

Cannot run 4g. please help

Hi, I have the white s2 i9100unlock version and when I put in my
Tmobile Sim card it says that I am running on E network instead of 4g. Is there anything I can do to change this? I contact Tmobile and they say it's the phone not their line. Please help me out because running on the E network is very slow
Sent from my GT-I9100 using XDA App
The international i9100 does not support 4G. Only option would be to get a 4G enabled one.
its because the international galaxy s2 doesn't have the same 3g bands as T-Mobile (assuming you are T-Mobile USA). They run off of 1700/2100 while the phone itself supports 850/900/1900/2100. While only the 2100 band matches, if you don't get 2100 coverage in your area, you will default to 2g.
Sent from my GT-I9100
Tkdinh101 said:
Hi, I have the white s2 i9100unlock version and when I put in my
Tmobile Sim card it says that I am running on E network instead of 4g. Is there anything I can do to change this? I contact Tmobile and they say it's the phone not their line. Please help me out because running on the E network is very slow
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
So you started another thread on this, where I also answered your question. This phone will never get HSPA+ speeds on T-Mobile USA - or what they call "4G". It lacks one of the necessary frequencies for it. It will only get Edge speeds. From what I remember on how T-Mobile USA's network functions, 3G and "4G" need both 1700 and 2100 mhz to function, as it uses one frequency for download and the other for upload.
EDIT: Here's the wikipedia article on AWS, which is the band T-Mobile uses for 3G/4G. In brief, AWS uses 1700 Mhz for uplink, and 2100 Mhz for downlink. So since it only gets half of the band, it won't do "4G".
akusokuzan said:
its because the international galaxy s2 doesn't have the same 3g bands as T-Mobile (assuming you are T-Mobile USA). They run off of 1700/2100 while the phone itself supports 850/900/1900/2100. While only the 2100 band matches, if you don't get 2100 coverage in your area, you will default to 2g.
Sent from my GT-I9100
Click to expand...
Click to collapse
Unfortunately, the bolded/underlined part is simply not true. T-Mobile USA needs your phone to be able to get both 1700 mhz and 2100 mhz UMTS frequencies to do 3G/4G. If your phone doesn't have one of the frequencies, it won't do 3G/4G at all, and fall to Edge (2.5G).
What if I overall another ROM? Will it help?
Sent from my GT-I9100 using XDA App
Tkdinh101 said:
What if I overall another ROM? Will it help?
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
No. The phone simply doesn't have the hardware to receive the frequency. Nothing you can do to fix this.
akusokuzan said:
its because the international galaxy s2 doesn't have the same 3g bands as T-Mobile (assuming you are T-Mobile USA). They run off of 1700/2100 while the phone itself supports 850/900/1900/2100. While only the 2100 band matches, if you don't get 2100 coverage in your area, you will default to 2g.
Sent from my GT-I9100
Click to expand...
Click to collapse
Wow that's weird, here in aus you only need to match one freq to get 3g. Do you know what t-mobile has done to require two bands to match? (its just my curiosity asking)
sent from I9100 using Omega
Tkdinh101 said:
Hi, I have the white s2 i9100unlock version and when I put in my
Tmobile Sim card it says that I am running on E network instead of 4g. Is there anything I can do to change this? I contact Tmobile and they say it's the phone not their line. Please help me out because running on the E network is very slow
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
You need Galaxy2 HD LTE to access 4G. That particular model is not available outside Korea at the moment. If you want 4G, try Samsung Galaxy Note or LG Optimus LTE - also known as Nitro HD, or HTC phones.
Visentinel said:
Wow that's weird, here in aus you only need to match one freq to get 3g. Do you know what t-mobile has done to require two bands to match? (its just my curiosity asking)
sent from I9100 using Omega
Click to expand...
Click to collapse
That indeed is weird and inconvenient, but I guess telco's can setup their system however they like... It may have lot to do with number of people using mobile services. In OZ we have 22 million potential mobile users using 4 major telco companies, whereas in USA, they would get most of OZ population just in New York city, let alone rest of the country.
Ah systemcrasher I think they might be load balancing the hspa+ mimo across the two freqs. Telstra nextg doesn't need to coz there's allot less people here.
If that's the case still should be allowed to fall back to a non mimo mode.
Let this be a lesson to the OP, always research all carrier pre requisites before buying, also consider other carriers encased you'd like to stay open to other options.
sent from I9100 using Omega
Visentinel said:
Wow that's weird, here in aus you only need to match one freq to get 3g. Do you know what t-mobile has done to require two bands to match? (its just my curiosity asking)
sent from I9100 using Omega
Click to expand...
Click to collapse
Visentinel said:
Ah systemcrasher I think they might be load balancing the hspa+ mimo across the two freqs. Telstra nextg doesn't need to coz there's allot less people here.
If that's the case still should be allowed to fall back to a non mimo mode.
Click to expand...
Click to collapse
systemcrasher said:
That indeed is weird and inconvenient, but I guess telco's can setup their system however they like... It may have lot to do with number of people using mobile services. In OZ we have 22 million potential mobile users using 4 major telco companies, whereas in USA, they would get most of OZ population just in New York city, let alone rest of the country.
Click to expand...
Click to collapse
ctomgee said:
EDIT: Here's the wikipedia article on AWS, which is the band T-Mobile uses for 3G/4G. In brief, AWS uses 1700 Mhz for uplink, and 2100 Mhz for downlink. So since it only gets half of the band, it won't do "4G".
Click to expand...
Click to collapse
So the answer is the link to the wikipedia article in my quote above. It's not T-Mobile USA's doing per se - they just purchased the AWS-1 (also known as UMTS band IV) band of the spectrum. That's just the way this band is set up. Wind and Rogers in Canada also use this band.

[Q] 2g 3g 4g Speeds in the US with European SGS2

Hi folks
I just moved to the US (about a week ago) and was wondering why my mobile internet connection is so slow.
I have a SGS2 factory unlocked and i was fine with it in Germany (no problems with 2g or 3g speed)
Now I'm in the US with a t-mobile prepaid card which should give me 3g speeds , if not 3g at least EDGE Speed. But the only thing i get is the E-sign with 2 arrows which is friggin slow.
As far as i know t-mobile's 2g & 3g frequencies should be the same as in Europe.
So my question: Is my phone the problem or is it just that the 2g/3g coverage in San Diego is so bad ?
thx in advance
its normal...coz sgs2 does not support t-mobile 3g bands....but it does support at&t 3g bands....i am also using t-mobile prepaid plan...and dont use data that much...coz everywhere i go i have wifi....
Sent from my GT-I9100 using xda premium
ah ok thx for the reply
do you happen to know if an factory unlocked iphone (without sim lock bought directly from apple) will be able to use the US-3g bands as well as the European ones ?
as far as i know....it will be same as sgs2....only supports at&t 3g bands.....no t-mobile.....
Ok thx man.. Guess I gotta ask them directly then
Swyped from my SGS 2 using Tapatalk
deadcookie said:
Ok thx man.. Guess I gotta ask them directly then
Swyped from my SGS 2 using Tapatalk
Click to expand...
Click to collapse
Asking who directly? T-Mobile USA? You can ask, won't change the answer. If you want 3/4g in the US with either a European Galaxy S2 (GT-I9100) or an unlocked iPhone, you will need to be on AT&T.
T-Mobile doesn't use the frequencies that those two phones support.
deadcookie said:
Now I'm in the US with a t-mobile prepaid card which should give me 3g speeds , if not 3g at least EDGE Speed. But the only thing i get is the E-sign with 2 arrows which is friggin slow.
Click to expand...
Click to collapse
E-sign = EDGE.
So if i buy me i9100 s2 and i put at&t sim card, i live in texas USA will i get at least 3g signals?
deadcookie said:
Hi folks
I just moved to the US (about a week ago) and was wondering why my mobile internet connection is so slow.
I have a SGS2 factory unlocked and i was fine with it in Germany (no problems with 2g or 3g speed)
Now I'm in the US with a t-mobile prepaid card which should give me 3g speeds , if not 3g at least EDGE Speed. But the only thing i get is the E-sign with 2 arrows which is friggin slow.
As far as i know t-mobile's 2g & 3g frequencies should be the same as in Europe.
So my question: Is my phone the problem or is it just that the 2g/3g coverage in San Diego is so bad ?
thx in advance
Click to expand...
Click to collapse
USA uses different bands from the rest of the world because, well, idk
North America:
GSM: 850/900/1800/1900 MHz
CDMA: Band Class: 0/1/10
WCDMA: Bands: 1/2/4/5/6/8/19
LTE: Bands: 1/2/4/5/17/19/25/26/41
Rest of World:
GSM: 850/900/1800/1900 MHz
WCDMA: Bands: 1/2/4/5/6/8
LTE: Bands: 1/3/5/7/8/20
This might be the case here, i don't think its carriers fault but idk really.

[Q] Can I replace my Exhibit ii with SGSIII on tmobile walmart 100m/unl data plan?

I am thinking about trying to get an sgs iii and wondering if it is possible to get it on the $30.00 mo 100min unl data plan through walmart?
I have the exhibit ii on this plan, had it for a couple months, anybody know how I would do this?
If it will work with Tmobile band why not, best to ask the source. I don't think we have a Wal Mart rep guru here.
Sure you can, if you don't want 3G.
Sent from my HTC One X using xda premium
You have prepaid plan, you can put your sim into just about any unlocked GSM phone (and T-Mobile phones) and use it. If you want a good phone right now, get the Galaxy Nexus (GSM), it supports T-Mobile 3G (1700/2100 band). T-Mobile version of SIII will be coming later.
thanks for the responses, a Galaxy Nexus is probably a more realistic option than the sgs3 price wise, going to take a good look at it on the play store.
cheers.
T-Mobile and AT&T both support compatible band.
the SGS3 uses HSDPA 850 / 900 / 1900 / 2100
T-Mobile uses HSDPA 900 / 1700 / 2100
AT&T uses HSDPA 850 / 1700 / 1900 / 2100
now we play match the bands. we see at&t shares 3 bands with the international SGS3, thats great. T-Mobile shares 1, not as awesome, but 1 band is enough.
its true what theyre saying up there about "only having 2G", well i should correct myself, it WAS true. however recently T-Mobile has upgraded their 2100 band to 3G, as theyve been expanding. so it will work fine on Walmart's plan, as they use T-Mobile's network.
T-Mobile will come out with an SGS3 later in the year, for SGS2 it was 6 months behind the international version. the T-Mobile version will use HSDPA 900 / 1700 / 2100. what do more compatible bands mean? well it means if youre in an area you normally wouldnt get good 2100 band signal, you may get 1700 signal. if you live in the city, youll see no difference at all, its only when youre in rural areas.
so in short; you can totally use the i9300 SGS3 on tmobiles network, and yes, you will have HSDPA 3G
soraxd said:
T-Mobile uses HSDPA 900 / 1700 / 2100
now we play match the bands. we see at&t shares 3 bands with the international SGS3, thats great. T-Mobile shares 1, not as awesome, but 1 band is enough.
its true what theyre saying up there about "only having 2G", well i should correct myself, it WAS true. however recently T-Mobile has upgraded their 2100 band to 3G, as theyve been expanding. so it will work fine on Walmart's plan, as they use T-Mobile's network.
Click to expand...
Click to collapse
Could really use a source for this, please. Everything i've looked up has suggested that their HSPA+ is only 1700 and 2100, and that phones with only 2100 would not work.
thebobp said:
Could really use a source for this, please. Everything i've looked up has suggested that their HSPA+ is only 1700 and 2100, and that phones with only 2100 would not work.
Click to expand...
Click to collapse
you know what, i made a mistake, i was using this
http://support.t-mobile.com/docs/DOC-4261
looking at the bands the T-Mobile One S (along with all other tmobile phones) support, but the 900 band is just added to the phone so it can be used if taken abroad. so my mistake.
to reiterate the sgs3 will only work on 2g on tmobile, it will only work on at&t for 3g.
im glad you questioned it, i would have gone along giving bad information

does the international s3 work with TMobile data?

Want to get the s3 but want to make sure it works with TMobile.
No, you will only get edge speeds, no 3g.
Sent from my GT-I9300 using xda premium
It works for me. Bought my unbranded, non-simlocked phone in Europe. Visiting US now. Daily plan with T-Mobile works fine for me.
Sent from my GT-I9300 using Tapatalk 2
shaft77 said:
It works for me. Bought my unbranded, non-simlocked phone in Europe. Visiting US now. Daily plan with T-Mobile works fine for me.
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
And you are getting 3g speeds??
I doubt that, the international version doesn't have the frequency for tmo's 3g.
Sent from my GT-I9300 using xda premium
i also tried my att i747 sgs iii after i unlocked it with a t mobile sim.. works but also only get edge.. maybe it would work if i flashed the t mobile modem?
lgkahn said:
i also tried my att i747 sgs iii after i unlocked it with a t mobile sim.. works but also only get edge.. maybe it would work if i flashed the t mobile modem?
Click to expand...
Click to collapse
Sorry I pressed thanks instead of quote.
No, its nothing to do with the modem. If it was, people all over the world would be buying devices from other countries.
The fact is the international GSM version only works on the frequencies its designed to work on. This is a hardware limitation and no amount of software will resolve that.
International frequencies are different to USA frequencies and as such, devices not designed for the USA will not work to their full potential in the USA.
UK (international) uses 900 Mhz/1800Mhz GSM/3G where as USA T-mob uses 1900Mhz GSM and 2100Mhz 3G.
Because the International GSM quad band device is:
850/900/1800/1900 MHz...
The GSM and 2G function works on 1900 (T-mob) but has no way to use 2100 for 3G as its not physically possible
Edit:
USA Carrier Voice Frequencies (MHz) 3G 4G Notes
AT&T 850 (Band 5)/ 1900(Band 2) 850 / 1900 Band 17 (700MHz)/AWS (1700/2100 MHz) GSM
MetroPCS 1900 / AWS 1900 / AWS AWS CDMA
Sprint 1900 1900 2500 / 1900 G-Block CDMA
T-Mobile USA 1900 AWS(1700/2100 MHz)/PCS (1900) AWS (1700/2100 MHz) GSM
Verizon 800 / 1900 800 / 1900 700 / AWS CDMA (GSM for 4G)
http://en.wikipedia.org/wiki/Cellular_frequencies
rootSU said:
Sorry I pressed thanks instead of quote.
No, its nothing to do with the modem. If it was, people all over the world would be buying devices from other countries.
The fact is the international GSM version only works on the frequencies its designed to work on. This is a hardware limitation and no amount of software will resolve that.
International frequencies are different to USA frequencies and as such, devices not designed for the USA will not work to their full potential in the USA.
UK (international) uses 900 Mhz/1800Mhz GSM/3G where as USA T-mob uses 1900Mhz GSM and 2100Mhz 3G.
Because the International GSM quad band device is:
850/900/1800/1900 MHz...
The GSM and 2G function works on 1900 (T-mob) but has no way to use 2100 for 3G as its not physically possible
Edit:
USA Carrier Voice Frequencies (MHz) 3G 4G Notes
AT&T 850 (Band 5)/ 1900(Band 2) 850 / 1900 Band 17 (700MHz)/AWS (1700/2100 MHz) GSM
MetroPCS 1900 / AWS 1900 / AWS AWS CDMA
Sprint 1900 1900 2500 / 1900 G-Block CDMA
T-Mobile USA 1900 AWS(1700/2100 MHz)/PCS (1900) AWS (1700/2100 MHz) GSM
Verizon 800 / 1900 800 / 1900 700 / AWS CDMA (GSM for 4G)
http://en.wikipedia.org/wiki/Cellular_frequencies
Click to expand...
Click to collapse
yes i agree for international version.. but if you read closer i DONT have the international version but the att version.. and as far as i know all the usa versions are the same with just diff. modems.
The international version will work in areas where T-Mobile is refarming 1900mhz to 3G. However this is only happening in parts of the coasts. I'm using it in Ohio and getting EDGE only. That said, it isn't too bad.
Sent from my GT-I9300 using Tapatalk 2
joshnichols189 said:
The international version will work in areas where T-Mobile is refarming 1900mhz to 3G. However this is only happening in parts of the coasts. I'm using it in Ohio and getting EDGE only. That said, it isn't too bad.
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
Erm, it's being tested in some coastal areas, but the 3g/hspa+ over the 1900 band is slated to go live on the majority of the network by the end of the year.
Sent from my GT-I9300 using Tapatalk 2
No service HELP or clairfication PLEASE
I purchased a Tinji i9300. I have been working on this for over 3 weeks. I have no service with T-mobile. It recognizes my SIM card as T-mobile. In Engineer Mode, my bands are, EGSM900, DCS1800, PCS1900, GSM850, WCDMA-IMT-2000. I have tried numerous ROMs (stock and custom) and have rooted the phone. I have changed the IMEI. No service at all. Any thoughts? Band issue? T-mobile issue? Possible solution? **** out of luck? :crying:
Thank you!

Categories

Resources