Hi I have a KoreanS6 (LG U+) SM-G920 and they don't use the 900 Mhz band with the 3G. I want to gift this phone to someone who lives in Cuba, over there, due to certain circumstances everything it's more complicated and recently they can use internet on their cellphones using 3G but the coverage is only on the 900 MHz therefore my KoreanS6 (LG U+) SM-G920 won't work at least with 3G. I have been gathering some information online and the specs for any S6 on LatinAmerica are pretty much the same, so I want to flash my KoreanS6 (LG U+) SM-G920 to S6 SM-G920I since this version has the 900 mhz 3G band, I have read people who succesfully have done similar things switching from Tmobile to Verizon and so on.
Also, I have gotten some answers telling me that I can't do this since these two phones are different models, this statement gets some contradiction with others who state that all hardware are the same and should not be an issue to do this flashing and "opening' this band. I would like some insides on this and any advice will be so much aprecciated.
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[Q] Help with AT&T bands, or why the rest of the world is more advanced than the U.S.
I need to buy a smartphone before the end of June for use in my new life in mainland China, but have ended up with many questions regarding how useful my phone would be if I returned to the U.S.
So China, being civilized like the rest of the world, uses only the 2100 band GSM for its 3G, at least at China Unicom. So as far as I understand, any phone that gets GSM 2100 gets 3G.
The trouble is what happens if I move back to the U.S.? I want a phone that will last for years. Seems like the only game in town is AT&T unless the feds stop the T-Mobile deal. So my phone has to be 850/1900/2100 to get 3G in the U.S., as I understand it. (At&T isn't exactly forthcoming on this on its site, so this is from this forum and other sources.)
My two candidates are the LG Optimus 2X and the Samsung Nexus S. The 2X has 900/1900/2100 3G bands and decent enough hardware that I'm relatively futureproof gear-wise. The Nexus S has -- at least where I live currently -- 900, 1700 and 2100 3G bands, and Google's stamp of approval means I'm futureproof on the software side.
My confusion comes from what all these numbers mean. Does my phone has to be just one of these bands to get 3G? Two of them? Or is all this a misnomer, and 1900/2100 is in fact its own unique band? Why do I need all these extra bands when most countries have just 2100? What am I missing if I go LG 2X and miss the 850 band?
Does having only two and not all three on my phone mean I would get 3G data only some of the time? Or must I meet all these criteria? Is one upload and one download?
And why is U.S. telecom so screwed up while the rest of the world seems to do just fine? (OK that one may be more of a rant than a question)
There are phones that hit on all the bands, but Motorola is closed software-wise and I don't want that, while Samsung Galaxy S II and iPhone 4 are both too expensive for me.
I'm clearly slow, and not an expert, but if anyone has time to educate me I would much appreciate it.
Hmm, this site suggests AT&T works on either 850 OR 1900. In other words, you need just one or the other on your phone, but not both:
wwwSPACE.cellularmaps.com/att_850_1900.shtml ((sorry I still can't link))
So the LG Optimus 2X would work in U.S.? Pity about Nexus S, because I prefer it for the likely long-term developer support, but life wouldn't be so bad with the Optimus 2X, now would it?
So I have no idea whether this is true, but Google and message boards tell me AT&T has two 3G bands, one 850 and one 1900. They don't need each other to work. Instead, they just duplicate.
Why? I don't know. There may be no logical reason, this being AT&T.
So that suggests in places where AT&T has kept 1900, a phone like the LG Optimus 2X (900/1900/2100) will work fine, and in places where it doesn't it won't. This map suggests wide overlap.
(Still can't post links. Great. Google "cellular maps" "AT&T" "850" and "1900." Thank God the board is safe from links!)
Bear in mind that none of what I've written here fits the definition of "fact." I have no education in this. But somebody's gotta continue the conversation and I'm unafraid to look stupid.
Norlos said:
So I have no idea whether this is true, but Google and message boards tell me AT&T has two 3G bands, one 850 and one 1900. They don't need each other to work. Instead, they just duplicate.
Why? I don't know. There may be no logical reason, this being AT&T.
So that suggests in places where AT&T has kept 1900, a phone like the LG Optimus 2X (900/1900/2100) will work fine, and in places where it doesn't it won't. This map suggests wide overlap.
(Still can't post links. Great. Google "cellular maps" "AT&T" "850" and "1900." Thank God the board is safe from links!)
Bear in mind that none of what I've written here fits the definition of "fact." I have no education in this. But somebody's gotta continue the conversation and I'm unafraid to look stupid.
Click to expand...
Click to collapse
The bands are frequency ranges, so it means that the phone will broadcast/receive on the 850 MHZ range, or 1900 MHZ range. Don't know if this helps, but that is what they are talking about.
Check out PDADB
I think you will find www.pdadb.net to be your new friend. So bottom line is if you want AT&T 3G you need 850/1900, Australia and Canada are the only other places that utilize these bands for their 3G from my knowledge. If you can find a Nexus S that has the North American bands it will do AT&T 3G (it will be the Canadian version). The normal Nexus S state-side is the AWS packed version (AWS = 1700 or T-Mobile 3/4G).
900/2100 are your standard European international 3G spectrum, and well 2100 is pretty much everywhere, even China as you found!
Say you go the AT&T store and ask them for a "World" phone then it is more than likely banded for 2100 in addition to 850/1900!
I hope that helps you!
EDIT: On PDADB.net you will want to look for UMTS850, UMTS1900, UMTS2100. IF it says GSM850, 1900, etc. that means it will do 2G on those bands but not pick up 3G on them!
EDIT 2: Nexus S with AT&T bands can be found here just click on Source 1 at the bottom of the article!
Thanks all! Yes, big help.
Where I live the i9020a hasn't appeared, and why should it? It's needed only in America. Meanwhile, the LG Optimus 2X is the same price here as the Nexus S, which is very very tempting.
Still, I may hold out until the i9020a or the white version of the Nexus S appears, and decide accordingly.
I've been searching 850 and 2100 3g supported smartphone.
Since I use at&t in the US but internationally travels, I think this is the best combination for me but those are not many.
I've only found Nexus One with at&t model which thought to be as fiasco and also HD2 T9193... Anyway those phones are old..
What else phones are available? Your help is much appreciated.
edited) I've found an answer from
http://www.gsmarena.com/results.php...nes=0&sColor=&StandBy=0&TalkTime=0&sFreeText=
I have both the T-Mobile and the international unlocked version. I have the latter because, in my excitement, I didn't take care to find out if it will work on T-Mobile's 3G speeds. To my dismay, it doesn't, and I have an extra phone.
I'm wondering if it will work on any other carrier's 3G/4G data speeds. Searching forums and support threads haven't gotten me any answers. Any help at all would be appreciated.
I bought mine in Britain and am using it quite happily here in Japan. T-Mobile USA has a relatively rare frequency band internationally; I think as long as you have 2100MHz and 900MHz bands, which this phone has, there should be an operator in almost every country that the phone will work on. In fact, it should work on most operators in most countries.
The phone has 850/900/2100 MHz bands for 3G; T-Mobile runs "4G" (actually 3G) on 1700/2100 aka AWS - this requires BOTH bands to be present in the phone, which is why the One S doesn't work. T-Mo USA also has 1900MHz, again not present in the One S. Can you get EDGE 2G data, which should be possible on 850MHz?
In the USA, it should work on AT&T, as they use 850MHz for 3G. Maybe you can find someone who will lend you a SIM to check it.
In Europe & Asia, it should generally work no problem.
I want to figure this out once and for all.
What services does this phone support on the 850 MHz band?
The big question is whether UMTS/HSPA works. NYC area has amazing 850 band coverage on AT&T.
If I were to put a prepaid AT&T SIM in my phone, set my phone to only operate on the 850 MHz band, and set the proper APNs (necessary for 3G?); would I be able to get data beyond EDGE?
Only one way to find out...
There's no mystery to it if you read through the [GUIDE] Set up Verizon Galaxy S3 as World GSM Phone (confirmed working) thread and the [BOUNTY] ($205 so far) Enable HSPA+ on 1900 MHz / 1700MHz for VZW Galaxy S3 i535 threads completely....
With the radio software verizon has on the phone, the galaxy s3 is quad band GSM (850/900/1800/1900) and single band WCDMA (2100).
We don't know if it has the hardware for WCDMA 850/900/1900 and until now, nobody has successfully flashed a different radio due to the bootloader lock. Keep an eye on the "enable WCDMA 1700/1900" thread for updates.
And just to answer another question that you might have, when my S3 was rooted and set up to work in Germany, I tried both T-Mobile and AT&T sim cards here in town. The problem with the S3 is that even if you try to select a different WCDMA band in the field test menu, the radio firmware will not allow you to change it from 2100. So in an area with T-Mobile PCS (1900) and AT&T PCS/CELLULAR (1900/850) WCDMA, each test I tried only ran on EDGE.
Sent from my Nexus 4 using xda premium
Wow... That really sucks.
So, there's literally no way to get 3G outside of Verizon aside from MetroPCS EVDO?
LLStarks said:
Wow... That really sucks.
So, there's literally no way to get 3G outside of Verizon aside from MetroPCS EVDO?
Click to expand...
Click to collapse
The first step is to experiment with different radio files, as one user in the 1700/1900 thread wants to do, but we need to get the secure-boot/bootloader unlocked so those files can be written.
Phones like the Rezound had the hardware for Quad-band WCDMA (3g), but took a radio file flash to make it work. The reason there is a bounty is because we -think- the Verizon S3 has the hardware, it will just take some work to get the software on the phone to talk to that hardware.
I know. I've been following the thread.
Was a little unsure of the details regarding frequencies.
As far as I understand, they're at a dead end. They need JTAG/UART to continue without worrying about bricks.
LLStarks said:
I know. I've been following the thread.
Was a little unsure of the details regarding frequencies.
As far as I understand, they're at a dead end. They need JTAG/UART to continue without worrying about bricks.
Click to expand...
Click to collapse
Yeah, and sadly, I lack the skills and the bounty probably isn't enough to attract a dev with JTAG and a phone to fiddle with to solve our issue
Verizon cdma is ran by nortel dual urban base stations the frequencies are 810-910 and 1840-2000mhz. The LTE is 690-760mhz 1x means that your on 850. 3g means your on 1900 or 850 depending on how far away from the site you are, and 4g means your on LTE. The LTE base station is ericsson but speeds will vary depending on whether or not the site is on fiber or T1 transport. Normally they keep the pre pay customers on the nortel dual urban... Oh by the way we are starting to decommission the lucent cdma on metro pcs sites and convert them to t-mobile GSM but luckily metro uses ericsson for LTE too so there's hope.
Sent from my SCH-I535 using xda app-developers app
Im wondering if anyone has gone from the Desire Z to the Galaxy S Relay 4G in Europe.
I ask for Europe to make sure it is compatible with most networks over here.
I see there is even ROM development over here with 4.4.4 running I imagine codename "Android L" will probably run as well
Thank you for the comments.
A few have had posts in the q&a or maybe general section, there aren't many posts at all here so I'm sure with minimal effort you'll find the ones I'm referring to
Sent from my Nexus 4 using XDA Premium 4 mobile app
riahc3 said:
Im wondering if anyone has gone from the Desire Z to the Galaxy S Relay 4G in Europe.
I ask for Europe to make sure it is compatible with most networks over here.
Thank you for the comments.
Click to expand...
Click to collapse
I went from Desire Z to Galaxy S Relay, it works well in Norway.
You need to unlock the phone from T-Mobile, see this thread http://forum.xda-developers.com/showthread.php?t=2255892.
Be aware that this phone is not enabled for 4G (LTE) network, only 3.75G (HSPA+). HSPA+ is marketed as 4G in USA, not in Europe.
raphaelcno said:
I went from Desire Z to Galaxy S Relay, it works well in Norway.
You need to unlock the phone from T-Mobile, see this thread http://forum.xda-developers.com/showthread.php?t=2255892.
Be aware that this phone is not enabled for 4G (LTE) network, only 3.75G (HSPA+). HSPA+ is marketed as 4G in USA, not in Europe.
Click to expand...
Click to collapse
3G works in Norway too?
I think by frequencies sadly 3G wont work here where Im at A shame.
900 MHz 3g doesn't work!
I upgraded too from Desire Z to Relay, didn't even realize any 900 Mhz problem. I get always an H or E icon (HSDPA or EDGE), so 900 MHz should be working.
According to specs, the phone should work with these networks:
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 1700 / 1900 / 2100
I have it in Telekom in Slovakia and in the meantime I travelled to NY and got no problem at all (I had it set to manual network selection to save roaming charges).
The phone I bought via ebay was locked (even the seller described it as unlocked) but after firmware downgrade I easily unlocked it. I recommend LiquidSmooth ROM, you'll fall in love with that phone!
My other finalist was Moto Photon Q, it supports GSM but lacks SIM card slot. If you want, there's a guy in Prague, the author of the sim card mod instruction post on xda, that can do it for you. But I chose the easier way. Now I have a small problem with display flex cable (probably too much openings/day) so I'm considering buying another Relay before they're gone with no decent qwerty phone around. And I can leave the current one for spare parts. I had to put away my DZ because of the keyboard. Some keys started to write several characters instead of one and there was no easy way to fix it.
FYI ebay deals in your name with customs, so they charge you immediately and the phone is delivered to your door without customs holding it for a week.
If you wish to
T699 in the UK
Hi.
I did not owed the HTC, I used an Xpreia Pro prior to my S4 Relay. However I have the S4 relay for almost 1 year and I had no problems using it in the UK. I have traveled in Europe (France, Germany, Austria, Hungary, Romania) and I was able to use it without any problems. AFAIK it works just fine on 900 Mhz but in 2G. The big question is what freq of 3G is your network provider using. For example, in UK I'm on EE network which is using 2100 Mhz for 3G and 1800 Mhz for 2G so the device works perfectly. Ifyou are on Movistar Spain than your phone will work fine, since the company is offering 2G on: 900/1800 MHz (both supported by S4 relay) and 900/2100 MHz UMTS ( from which 2100 is supported by the device). In very simple translation 2g will work everywhere without any problem, it might happen that is some places you will not get 3G signal.
Hope it helps.
Emil