Database Develop

Kaiser : When 3G icon appears ATT Service is lost...

I am on the old $39.99 ATT plan the one that does not have 3G and my with an old “blue” SIM card. I have been using Sony S710a for the past two years which in fact worked fine. A week ago I have obtained ATT Tilt (HTC 8925), unlocked it so that it would read my card and started using it.
Here is the problem that I can’t solve>
Sometimes my phone loses service, completely, and I cannot reconnect to ATT Service. I have tried to find a pattern but so far I am clueless of what might be causing it.
According to my observation:
1. It has been happening in certain neighborhoods.
2. When I do find service and connect to it shows E and then switches to 3G
3. When my phone starts to show 3G it loses connection.
This phenomenon happens only from time to time. Other times I have 3G icon and everythign is fine. I have tried T-mobile card in it and there is no problem. It connects to T-mobile service and has all bars. Thereafter I have put my card into an unlocked Nokia 6300 and my ATT connection works fine. The only thing I can blame is 3G.
Please if anyone knows what this, why its happening and how I can avoid this issue let me know. Thank you.

it looks like I have got a solution...
Im not sure yet, but so far I have installed an application that supposed to keep me away from [3G]. The application that I have installed is Bandswitch. So far it only shows [E] . I have to travel to those areas where I had no service to be sure that this program works. Ill keep you updated on this issue.

go get a new sim card. ATT and Cingular towers were different so some older sim cards have trouble connecting to some towers. its only something like 15 bucks.
when i went to the ATT storeto get my tilt, even though i already had a 64k sim they still upgraded the sim (for free seince i was about to pay 400 bucks).

Its your sim card
The old sim cards don't have enough memory. Get a new one with the 3g logo on it. You should probably upgrade your service too. Or you'll get a big surprise when your bill comes.

I have the same problem here in germany with the O2 3G Network... My phone has a GPRS Connection and when the 3G Icon appears there is a total loss of connection for like 10 seconds and its back to GPRS again... End of the story (like i assumed and wrote to O2 ;P) my SIM Card is too old, new one on the way Should work for you as well, like all the other posters before me claimed
Edit: Oh and it didn't cost me one buck, all inclusive service because i didn't lose or broke my SIM Card. When it is too old to be able to allow you to use your full contract properties, i guess they pretty much have to send you a new new SIM card for free. At least here it works this way

Thank you...
The problem is that I dont have a contract and the only way for them to upgrade my sim to 3G is when i sign up. Curently I have 1000 min, nights and weekends from 7pm, free mobile to mobile, free long distance and free incoming SMS. Its highly unlikely that any one of you would give that up and pay more money for less minutes and less services. Right? Thank you. at this point i think im fine with what I have got, in addition to not needing 3G at all. by the way, i think that this program Bandswitch is doing a good job keeping me of 3G. Thank you.

Yarikd said:
The problem is that I dont have a contract and the only way for them to upgrade my sim to 3G is when i sign up.
Click to expand...
Click to collapse
I never had to 'upgrade' my sim to 3G, nor sign a new contract. I just took my old GSM SE phone in to ask about service, and they asked if I would like a sim swap to the latest.. Sure, done.
Now works fine with the Kaiser, and never did any form of 3G 'upgrade'.

NuShrike said:
I never had to 'upgrade' my sim to 3G, nor sign a new contract. I just took my old GSM SE phone in to ask about service, and they asked if I would like a sim swap to the latest.. Sure, done.
Now works fine with the Kaiser, and never did any form of 3G 'upgrade'.
Click to expand...
Click to collapse
Were you part of the old ATT Blue network? Cingular actually started giving out 3g cards in early 2006 in my area. I got one with my 8125 where they FIRST came out. So it's possible if you've gotten a phone since then and now that your card is already 3g...

Nate731 said:
Were you part of the old ATT Blue network? Cingular actually started giving out 3g cards in early 2006 in my area. I got one with my 8125 where they FIRST came out. So it's possible if you've gotten a phone since then and now that your card is already 3g...
Click to expand...
Click to collapse
You're right, I think it may be important to be on the 'orange network' because 3G never existed for the old at&t wireless 'blue'.
I was always part Cingular, and did go through the free-sim upgrade, but got another one when I just walked in after that.

Well I'm in malaysia, Using Maxis 3G network. I also having problem same symptoms like you guys. What do i realize sometime it give my device freeze for sometime. But the freeze just like for few second. And what do i realize when 3G appear our phone signal become weak. From full bar drop to 2 or 1 bar.
Did u guys having this issue too?
My simcard is 128k if im not mistake.

See this: http://forum.xda-developers.com/showthread.php?t=335074
Most likely the same problem. RMA ahead.

Try this on your phone settings (dialer --> menu --> options) on the network tab is network selection set to automatic? i was experimenting with my phone to see if i could get a better signal and set it to manual and choose my network but when im no a 3G connection its called 3G T-mobile and when not its just called T-mobile and on the manual list its just called T-Mobile so each time i got a 3G connection it would lose signal completely and start searching for i think T-mobile not 3G T-mobile the moment i set it back to Auto and soft-reset it worked fine again.

my phone did this at first, and all i had to do was get a new SIM. they didn't charge me a dime for it at the att store, but if they ask just tell them your phone won't connect and that it's a problem with your SIM

I have the same problem and have a new phone on the way. I already have a 3G sim card.
When you call, they'll probably make you hard reset your phone. Just a heads up.

Reward $125 : Trick Diamond into thinking that it is not roaming

I have the Diamond from the Rogers network in Canada. It is SIM unlocked and constantly flashed with a variety of different ROMs. I am on the Fido network in Canada, which was purchased by the Rogers network. Ever since Rogers bought Fido, every phone I put my SIM in shows roaming.
Fido has been no help in solving the roaming problem. I have gone through this and many forums and have not found a solution to this problem.
Many individuals have claimed that this is not possible and that it is defined by the network; however, I think the Windows Mobile OS can be tricked to thinking that it is on the home network, due to the following: I have a Samsung SGH-i616 originally from the Rogers network. I have SIM unlocked it and flashed it with the Fido Windows Mobile 6.1 ROM. This phone does not show that it is roaming. Everything works like it is on the home network for this phone.
I am willing to give US$100 to whoever could make a CAB or something that will trick the phone into thinking that it is not roaming. The fix should not just hide the roaming icon. It should make the phone work as if it was on a home network.
Who is willing to solve this problem and claim the fabulous reward???

Everyone that uses an HTC device with Fido suffers from this problem. I know that people on the Telfort network suffer from this roaming problem too. Surely, I am not the only one that has been severely annoyed by this right?

Dude, have a look here http://forum.xda-developers.com/showthread.php?t=503131&highlight=roaming see if that helps.

Thanks for the tip. Have looked into the thread before. Does not offer any help in defining a network as a home network.

If it helps in fixing my problem, all the files on my Samsung i616 (RILGSM.Dll files and such) are at their disposal.

try this (just throwing it out there)
hklm\software\microsoft\mds\cebits\roaming and set it to zero
i see some other registry settings but they do not look like they could be applicable.

Didn't have a registry entry there. Created a new dword called Roaming with value of 0. Rebooted my phone. Still the same. Roaming

Have you tried that other app No Data mentioned in that previous post?

Tried the No Data app. Does not trick phone into thinking it is not roaming. It disables data when roaming. Since my phone thinks it is roaming all the time, it successfully turns off data in my home network.

hameedx said:
I have the Diamond from the Rogers network in Canada. It is SIM unlocked and constantly flashed with a variety of different ROMs. I am on the Fido network in Canada, which was purchased by the Rogers network. Ever since Rogers bought Fido, every phone I put my SIM in shows roaming.
Fido has been no help in solving the roaming problem. I have gone through this and many forums and have not found a solution to this problem.
Many individuals have claimed that this is not possible and that it is defined by the network; however, I think the Windows Mobile OS can be tricked to thinking that it is on the home network, due to the following: I have a Samsung SGH-i616 originally from the Rogers network. I have SIM unlocked it and flashed it with the Fido Windows Mobile 6.1 update. This phone does not show that it is roaming. Everything works like it is on the home network for this phone.
I am willing to give US$100 to whoever could make a CAB or something that will trick the phone into thinking that it is not roaming. The fix should not just hide the roaming icon. It should make the phone work as if it was on a home network.
Who is willing to solve this problem and claim the fabulous reward???
Click to expand...
Click to collapse
How would you like to pay ?
WU or Paypall !!!

If you are able to solve my problem, I will pay you in any method you prefer. PayPal or Western Union is fine by me. Heck, I'll even put dollar bills in an envelope and post it to you if you prefer

A friend of mine is suffering from the same problem and is willing to give $25 to have the problem solved. So the reward is now $125.
If anyone else is having this problem, please put forward your pledge so that an enterprising developer can fix this issue and claim the large bounty.

I was looking for the EXACT same thing and I guess it means there's no solution?
Like you, I'm a Fido customer using a Rogers smartphone (Touch) and it always shows I'm roaming ... some programs can get around it, others cannot, and I get asked "Do you want to enable data connection when roaming? It may cost you." every time.

I'm also having the same problem. It's quite common in Norway, where a couple of big companies own the networks and the other providers "roam" in their network. Annoying.

Maybe you should contact Rogers to get a SIM card of them? Since Rogers bought Fido, so maybe you should get a Rogers card?

I am also having a roaming issue. I have nation wide coverage but when I get out of the state of Wisconsin, I start roaming. I get warnings about I am roaming and additional charges may apply when I open, send, or receive on email, internet, youtube, facebook ... pretty much anything data. I have an unlimited data plan so this shouldn't be an issue? I have nation wide coverage...
Gah! How to disable these warnings? Some adv. config / tweak program or registry edit?

Cybot12999 said:
Maybe you should contact Rogers to get a SIM card of them? Since Rogers bought Fido, so maybe you should get a Rogers card?
Click to expand...
Click to collapse
Can't put a Rogers SIM on the Fido network. Will get a validation error.

Does anybody have any input on how to get this issue fixed. I am very close to canceling my contract with my carrier over this problem

Same Trouble here in Montreal with my Rogers Diamond Phone (unlocked) and SIM fido.
ALWAYS ROAMING Grrrr
And I can't setup e-mail correctly and no home network to!
KaNiMziE

I also have recently activated an HTC Diamond on Fido, and constantly have the roaming icon above. It doesn't really bother me at all, however, I am just concerned about actual roaming charged. Roaming should be defined by the cell towers, correct? So, even though it displays a roaming icon, I am not really roaming at home, and therefore, will not be charged. Could anyone confirm?

Help me get my G1 to work on T-mo

Hi there:
Need help into making my new (used from ebay) G1 to work on T-mobile PR. Long story short T-mobile bought Suncom like a year ago. My SIM card is still SunCom and I use the SunCom APN setting to access the internet. I have the 5.99 internet that have being working flawlessly in my iphone 2G (no hacks requiered or proxys). Apparently the Suncom APNs don't have data restrictions since Suncom din't use to have different internet packages like T-Mobile does.
Anyway my problems is that if I put my Suncom sim in the G1 it works but it is roaming all the time (doesn't happen with my iphone wish says t-mobile all the time, never roaming). If I put the Suncom APNs I get edge and works, but still is in roaming and I am sure they going to charge me for it. If I go to search for Networks I get a blank Network (to the one it does register) and the other two GSM carries in PR (Claro and AT&T).
Notice that the phone is rooted and was running Jachero 2.7.3 and now Cyanogen 3.6.8.1., recovery image 1.3.1 and latest SPL and radio.
My guess is that since T-mo can detect the phone they are blocking the phone with my current voice and data plan. I already call them and they told me I have to change my plan to the $35 dollars a month. Notice that T-mo does not have 3G in PR (so I think that is to much money for edge only and txt). I offer to pay the regular internet of $20 and my package of $5 for txt but still to no avail it has to be the $35 dollars to make the phone to work on t-mo. I have unlocked the phone just to try, but still the same roaming problem.
I know that it must be an internal blockage to the phone because the iphone works perfectly on t-mo and my actual settings. My question: If there any way to change the phone to make it look to the t-mo networks like a sony ericsson or iphone? I have old phones that I can use the imei of. Anyway to force the phone to register to the t-mo network and put it to work? I now people that works there (Although I don't know if they have access to do changes in the system).
Any help to get me in the right direction will be appreciated.
Before people began to tell me that changing IMEI can be ilegal, I know it. The phone is not stolen (I can prove it). The IMEI numbers I have to change it for are mine (I can prove it, I have a none working k750, w800, W600, lg shine, old nokia 6200, water damage iphone 2G, fully working K790, and fully working iphone 2G, yes I have a lot of phones good and bad ones).
If it can be done please advice even if your going to help me do it. Thanks in advance.

Using on Other Carriers(GSM)

I am a n00b in the subject of unlocking phones to use on other networks etc.
Is there a possibility when the SPL is unlocked that we could use this on any GSM network since it is a 'world' capable phone with the GSM radio and a SIM card?
I have used a lot of WINMO phone son VZW and I flash and unlock quite often. Just had no idea how this process worked. sorry if this is a duplicate of any kind
thank you

You can call Verizon and ask them for the unlock code to your phone. The number is 1-800-711-8300, option 2 I believe. Either way you'll end up talking to a human who can do that for you. Then you'll enter the code (code A) in All Settings > Personal > Security. According to others, this unlock on the SIM will remain, even after flashing with a custom ROM.

no software to unlock the sim card, i don't want to call vz

I can buy unlock code for Imagio.

Why dont you want to call verizon? They are perfectly happy to unlock the sim for you as long as you dont have any problems with your account like delinquent payments. I called and had both of my phones unlocked in minutes and tested my ATT sim card, worked great on the aTT network

GSM 3G on america?
devlspawn said:
Tested my ATT sim card, worked great on the aTT network
Click to expand...
Click to collapse
Did you see if you had E or 3G or H?
I've looked at the specs but haven't found the GSM 3G bands that it has.
Just this:
Digital Dual (CDMA,PCS) /1X, EVDO /Rev.A <---- perfectly clear
GSM Quad Band (GSM/GPRS/EDGE) <---- perfectly clear
WCDMA / HSDPA / HSUPA <---- not clear if it has 850mhz here
I guess it doesn't have 3G in 850mhz but I still have hopes.
Regards!

I only get "E" - my SIM is 3G capable, but the corporate plan is text-only. In other words, I can't say for certain if it will get 3G speeds. HSDPA is available here in the US, so it should be possible for an Imagio to have 3G in the States.

I called yesterday, told them I would be going overseas, they gave me the unlock code. Simple as pie. I can use my neighbor's AT&T sim card without any issues minus stuff that is Verizon specific.

The SIM unlock was easy and successful. Just call Verizon at the above number and its a done deal in 30 seconds. Will try my wife's SIM in it later.....woohoo....

because i dont have vz wireless phone number, but i need to use the t-moible or at&t, i call them, but they need me vz wireless phone number... i dont have, they not unlock for me

as i was told u are able to get it unlocked verizon will do it if ur account is 3months old and in good standing... also as far as using it on gsm not sure as of yet but will say tmobile basic signal i E in an area where out of ur basic ntwork jumpin off of another tower it will put u on H or even G but there is no 3G

wingtytn said:
as i was told u are able to get it unlocked verizon will do it if ur account is 3months old and in good standing... also as far as using it on gsm not sure as of yet but will say tmobile basic signal i E in an area where out of ur basic ntwork jumpin off of another tower it will put u on H or even G but there is no 3G
Click to expand...
Click to collapse
H is HSDPA, which is 3.5G (faster than 3G... 7.2mbps compared to 1.5 mbps or something like that)
Edge is like 0.3 mbps and GPRS like 0.1
not really sure, but you get the idea.
Here in Mexico we have HSDPA but never get above 2mbps, at nights we do peak at 3mbps but avarage is still at much 2mbps.

Did I do something wrong?
I told them I was going over seas, I gave them my sim number and they said I was all set to go over there. Does this mean my phone is unlocked, I didn't have to put in any numbers. I will hate myself if I said the wrong thing. And if I did it right then how do I switch between sim cards and cdma?

For you phone to be unlocked they would have to give you a number to enter.
To switch between sim and cdma, go to settings -> phone -> network and change it from global mode to GSM

Razorfold said:
For you phone to be unlocked they would have to give you a number to enter.
To switch between sim and cdma, go to settings -> phone -> network and change it from global mode to GSM
Click to expand...
Click to collapse
Not true, works fine with t mobile and at&t, didn't enter any numbers did it all from their, weird, but whatever.

I think a few things from the last three posts need clarification:
1. When you call VZW Global Support, they should have given a security code to unlock the SIM. It is a string of numbers. It is not a phone number.
2. Once the SIM is unlocked, if a SIM is present in the phone, there is no guarantee that switching back from GSM/UMTS to Global will switch the phone back to CDMA. There have been times where I've done that, and the phone has stayed on AT&T (my employer uses AT&T). I think a better method is to use either CDMA or GSM/UMTS, and to avoid the Global setting completely.

Kebero said:
I think a few things from the last three posts need clarification:
1. When you call VZW Global Support, they should have given a security code to unlock the SIM. It is a string of numbers. It is not a phone number.
2. Once the SIM is unlocked, if a SIM is present in the phone, there is no guarantee that switching back from GSM/UMTS to Global will switch the phone back to CDMA. There have been times where I've done that, and the phone has stayed on AT&T (my employer uses AT&T). I think a better method is to use either CDMA or GSM/UMTS, and to avoid the Global setting completely.
Click to expand...
Click to collapse
On item number 1 I would agree with you ignore my experience because even my friend who unlocks all kinds of phones for metro says it is a weird case. I have never received any unlcock cod yet it says "sim security unlocked" probably will be screwed up if I ever want to flash or reset it but whatever.
On number 2 I can't agree with you because I bought an at&t go card just for sh**ts and giggles and I have no problems, infact I can switch between the two while the phone is on, done many tests. But if anyone else experiences this issue I would like to know.

I have never heard an unlock like that. But could be... like an 'on air update'... Most times is a code or the frown upon methods (connect it to a PC or a box).
If any one wants to know, no it does not have GSM 3G for 850mhz band, not 3G with ATT and others in the world that uses that band. Tested it myself.

medellinrob said:
I have never heard an unlock like that. But could be... like an 'on air update'... Most times is a code or the frown upon methods (connect it to a PC or a box).
If any one wants to know, no it does not have GSM 3G for 850mhz band, not 3G with ATT and others in the world that uses that band. Tested it myself.
Click to expand...
Click to collapse
Even if you run at&t 3g it is much slower than verizon's. Either that or safari renders slower than s**t on brother's Icrap 3g. T mobile's is faster if you can find their 3g coverage, good luck.
PS I am still looking for internet connection settings for tmobile as I sold an unlocked imagio to my buddy and he can't get the data connection working.

does anyone ever solve de 3G problem with the 850 MHZ band... I live in Venezuela use movistar i ve the imagio sim unlocked can´t get 3G due to band restriction

[Q] Question about international use of this phone

So I have this phone (Samsung Galaxy Exhibit II 4G) from T-Mobile, I am on the 30$ monthly 4G plan with 100 minutes of talking, 5GB of 4G and Unlimited Texting. My question is since I recently tried to unlock my phone, but not sure if it was already unlocked since I purchased it through amazon and its the prepaid version of the phone, or if the sim just needs to be unlocked, whatever the case I am traveling to Europe next year and wanted to know if I can use this phone with the networks there. I just tried today going into the Select network option under wireless and networks and after searching for some time I had a choice between T-mobile and At&t and some how I acctually was able to connect to At&t even with my T-mobile sim card in it. So does this mean I can use it in Europe and just connect to networks there that way? I know its alot of money but I will fill up my account with money forsure before I go. Is it possible?:laugh:

Call TMobile and tell them your traveling to Europe and you need your phone unlocked. They will probably want to email you the unlock code.
When you get to europe set up a service and drop in their sim card. The Galaxy Exhibit (Exhibit 2) specs say it will work in Europe however, for some unknown reason, some people have problems.

NomadSpin said:
Call TMobile and tell them your traveling to Europe and you need your phone unlocked. They will probably want to email you the unlock code.
When you get to europe set up a service and drop in their sim card. The Galaxy Exhibit (Exhibit 2) specs say it will work in Europe however, for some unknown reason, some people have problems.
Click to expand...
Click to collapse
Thanks for the reply! and I acctually did that and its been 3 days since I called asking for the unlock code and they said they would email it to me but no luck yet..its strange as to why unlockcell.com or something like that didnt work...But i meen something is already unlocked if I can search and connect to other networks other than Tmobile right? I connected to At&t just by going to the select network operator in android settings..

I can switch between carriers believe that would just be considered roaming.

I used this exact phone, Samsung Galaxy Exhibit ii 4G, somewhat successfully in Europe last year. This was the WalMart phone that I paid to unlock. Here's what I experienced.
The first try was in England with the O2 network. I popped in their SIM card. While I got the phone and texts to work I never got the internet to work. For some reason it did not automatically download the APN information. I tried manually loading that information and it still never worked. While it seemed it should have had internet access, it showed data transfer at the top of the screen, it was so sloooooow that it was useless. I had purchased the SIM card at a place called Carphone Warehouse. They ended up lending us a phone for about a month so we could use the SIM. I would recommend trying a different carrier than O2 and make sure before you leave the store that it's actually working or that you can get your money back if it doesn't or that you can get a loaner phone. BTW: there isn't much 4G in Europe either.
In Germany I bought a Tmobile SIM card and it worked find.
In Italy I bought a TIM SIM card. Again it did not properly download the APN data. But with a little online searching I found the correct APN information, manually loaded it in, and it worked fine.
Data usage in England, Germany, and Italy is actually fairly reasonable. Don't even consider it in France. First it costs 15 euros just for the SIM card and data cost per mb is horrendous.
Be sure to go to an actual phone store to buy your card and not a tobacco shop. At least at the phone stores you can get help if you are having trouble.

Caryllb said:
I used this exact phone, Samsung Galaxy Exhibit ii 4G, somewhat successfully in Europe last year. This was the WalMart phone that I paid to unlock. Here's what I experienced.
The first try was in England with the O2 network. I popped in their SIM card. While I got the phone and texts to work I never got the internet to work. For some reason it did not automatically download the APN information. I tried manually loading that information and it still never worked. While it seemed it should have had internet access, it showed data transfer at the top of the screen, it was so sloooooow that it was useless. I had purchased the SIM card at a place called Carphone Warehouse. They ended up lending us a phone for about a month so we could use the SIM. I would recommend trying a different carrier than O2 and make sure before you leave the store that it's actually working or that you can get your money back if it doesn't or that you can get a loaner phone. BTW: there isn't much 4G in Europe either.
In Germany I bought a Tmobile SIM card and it worked find.
In Italy I bought a TIM SIM card. Again it did not properly download the APN data. But with a little online searching I found the correct APN information, manually loaded it in, and it worked fine.
Data usage in England, Germany, and Italy is actually fairly reasonable. Don't even consider it in France. First it costs 15 euros just for the SIM card and data cost per mb is horrendous.
Be sure to go to an actual phone store to buy your card and not a tobacco shop. At least at the phone stores you can get help if you are having trouble.
Click to expand...
Click to collapse
Are you able to connect to 2100mhz HSPA which is the 3G frequencies used in these countries. My understanding is that the phone is triband HSPA at 850/1700/1900 HSPA and wouldn't be compatible with the 2100mhz used in Europe. There is a small overlap between the 850mhz spec and the 900mhz so it might be possible if the winds were blowing right to get a 3G signal in some European country occasionally, but that you were mostly relegated to a 2G signal and that you should absolutely avoid carriers like 3 who had no 2g licenses.

stufried said:
Are you able to connect to 2100mhz HSPA which is the 3G frequencies used in these countries. My understanding is that the phone is triband HSPA at 850/1700/1900 HSPA and wouldn't be compatible with the 2100mhz used in Europe. There is a small overlap between the 850mhz spec and the 900mhz so it might be possible if the winds were blowing right to get a 3G signal in some European country occasionally, but that you were mostly relegated to a 2G signal and that you should absolutely avoid carriers like 3 who had no 2g licenses.
Click to expand...
Click to collapse
Actually it's a quad band phone.
GSmarena.com lists the full specs for this phone and they show this:
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 1700 / 2100 / 1900
I was getting 3G in Germany and Italy, no problem. Sometimes, depending upon where I was, it would drop down to Edge. I have no clue why it didn't work with the 3 network other than I just couldn't get the APN right. So for England, try a different network and make sure it's really a different network. Some of the carriers have the same names but are on the same network. When you can I'd suggest sticking with Tmobile. That way you're most likely to have it work. Oh, to get the SIM cards on the continent you usually need to have your passport to set up the account. So don't forget to bring that along when you go to the phone store.
Oh, when I said I tried the O2 network I actually meant the 3 network. Sorry about that. I stand corrected. I never did try O2.
All in all it worked pretty well. Usually the plans include around 200 mb data per month. So you do have to be careful as to how much you use your internet. Fortunately many McDonalds have free wifi these days. In Germany, however, you have to have a local phone number to use the McDonalds wifi because each time you want to use it they have to send you an SMS with a daily passcode and you only get 1 hour per day usage.

My understanding is that Europe used Band I HSPA (2100mhz) and that 1700/2100mhz was "Band IV" and something different:
Take a look at this Wikipedia article to see where I am coming from:
http://en.wikipedia.org/wiki/UMTS_frequency_bands

I used this phone last month on a trip to Brazil with a local carrier, without any problem at all. Just like people on the thread said, you just need to call TMo and ask them about the unlock code, should be on your mailbox by next day. If you didn't get it, call them, 611, and use the option 9 to call straight to the operator, and tell them that you are traveling next week. However, to get the unlock code, you have to be using the phone on TMo for at least 3 months, or have someone that has a plan that has been active for such period.

Hi there my friend!
I went to US last month and brought one of this with me. I had to unlock it through an internet service because TMo SMS with unlock code never arrived – even though I called Costumer Service when I was at the US.
I can confirm that my cellphone worked with both 850 and 2100 frequencies. These are the two ones we have here in Brazil – actually, one of the operator uses 850/2100 and all other use 2100. I have one SIM of each operator and I tested them all with my SGE4G.
One little remark that I feel I should make although I almost know it does not matter: I never tested them with stock ROM since I flashed custom and AOSP since day one.

In Europe I used just the stock ROM. I hadn't even used the phone in the US at all so it didn't have any updates either. The only thing I did was unlock it. As I said it worked fine in Germany with Tmobile. Fine in Italy on TIM once I got the APN right. But never worked in England with 3. In England, try a different network than 3 and make sure the internet is really working before you leave the store. Otherwise you can't get your money back.
If you get the SIM at Cellphone Warehouse in England ask if you can get a "standby" phone to borrow if the SIM doesn't work in your phone. Their 'standby" phones aren't very powerful but at least you'd have something to use. You just need to return it to any of their stores when you leave.
The phone drops down to Edge when it wasn't in a 3G network. So I set up the browser to download text only, worked with mostly mobile only sites, and avoided all video. You need to do this anyway in most countries as your amount of data included in the monthly fee is very limited.

Hey,can any developers try to change the software of the radio so the phone work in asia&europe wcdma900/2100MHz