Modem for travel in China - AT&T Samsung Galaxy S II Skyrocket SGH-I727

I'll be traveling to Beijing in a week and have an unlocked Skyrocket. I will probably get a prepaid SIM while I'm over there.
I am looking for the best radio to flash to the phone to give the best compatibility and hopefully get some sort of 3G.
As far as I can tell I need WCDMA2100 for China Unicom.
My best guess at the moment is the DoCoMo KK3 which I flashed and the phone booted fine, but I have no way of knowing how well it will work once I'm over there. I'd appreciate any heads up someone can give.
Thanks,
Jeff

If you have CWM installed then simply download all the radios onto an sdcard. Then you can test them all while you are there. Also *#2263# may be helpful for locking in certain bands.
Sent from my SAMSUNG-SGH-I727 using xda premium

Related

3g on Att?

Can anyone confirm that this works on att network? Even on tmobiles website it says it supports the 850 band but i saw a report on engadget that they were having trouble connecting. Can anyone tell me if this phone has a locked bootloader? As of now i have an atrix but i would prefer vanilla android.
Sent from my MB860 using XDA App
It currently only supports ATT 2G. The hardware is capable of 3G but the bands are blocked out. There is some hope they can be enabled via a software fix, but I wouldn't hold my breath.
Sent from my Nexus S using XDA Premium App
This is typical for carrier phones. Of course they don't want to sell a phone that works great with other carriers. The Phone supports the bands but the radio/software is blocking use (per Tmobile). It was already quoted that Tmobile will unlock the AT&T 3G once the merger goes through.
The bootloader is unlocked. We already have root and Clockwork Recovery setup on stock Android. LG has even already released the source for the kernel. CM7 is also already on the phone but not quite prime time.
Once custom roms are published, we'll be good to go. Coming from a Nexus One, I'm glad this phone is just as open.
I'm sure someone will unofficially enable the at&t 3G, just give it a little time.
player911 said:
This is typical for carrier phones. Of course they don't want to sell a phone that works great with other carriers. The Phone supports the bands but the radio/software is blocking use (per Tmobile). It was already quoted that Tmobile will unlock the AT&T 3G once the merger goes through.
The bootloader is unlocked. We already have root and Clockwork Recovery setup on stock Android. LG has even already released the source for the kernel. CM7 is also already on the phone but not quite prime time.
Once custom roms are published, we'll be good to go. Coming from a Nexus One, I'm glad this phone is just as open.
Click to expand...
Click to collapse
Source link?
Well no big deal anymore [email protected] I just cancelled my att plan and joined tmobile to get this phone
Sent from my LG-P999 using XDA App
The service manual clearly states that the phone only supports WCDMA FDD1(2100) and FDD4 (1700). Theres no mention of WCDMA FDD5(850) anywhere, not even in the block diagrams of the RF circuits.
How many posts do we need about this?
jimbo831 said:
How many posts do we need about this?
Click to expand...
Click to collapse
Because theres 50 different theory's about this subject.
Sorry. I made this post before I looked through the forums. A mod can close this thread as its irrelevant
Sent from my LG-P999 using XDA App

[Q] Unlocked Infuse 4G won't allow me to manually select network

So I'm in Bangkok this week, and I have my unlocked stock rooted Infuse 4G with me and my Tru Mobile Roaming SIM won't connect to the right network because the stock rom points to the default AT&T roaming partners, and when I try to manually select a network the manual selection is greyed out.
I read somewhere on here that going into app SamServMode and selecting debug and Debug Screen and Phone Control and Network Control then select Manual it doesn't allow for selection.
The issue is the phone is preferring a different network than my SIM has a roaming agreement with, so I need to be able to manually select. Anyone know of a solution without changing roms?
Thanks!
Anyone? I bought a local DTAC sim and it works fine since DTAC is the official AT&T roaming partner the ROM allows hooking on to it, but still can't use non-DTAC sims as the rom doesn't allow manual network selection
Bump.
Can anyone help her?
Sent from my Samsung Infuse 4G
So I'm heading home to the states in 24 hours... but I do think this is an interesting topic hopefully someone can assist with. Seems that even when unlocked, a carrrier cannot be manually selected, leaving roaming limited to the carriers att allows even when using another carriers global sim. Seems a limitation of stock rom but is the first time I've seen this on a phone.
Bella i've got the solution for you...
Flash the rogers modem..
The att modems have this feature lockedout, so any changes revert back.... I can confirm that the rogers modem gives full access to changing the network and it does stick....
Do so by pressing *#2263# with rogers modem.... You can then manually select the network to lock onto.
Sent from my Samsung Infuse 4G
SSJ_Gomike said:
Bella i've got the solution for you...
Flash the rogers modem..
The att modems have this feature lockedout, so any changes revert back.... I can confirm that the rogers modem gives full access to changing the network and it does stick....
Do so by pressing *#2263# with rogers modem.... You can then manually select the network to lock onto.
Sent from my Samsung Infuse 4G
Click to expand...
Click to collapse
Nice! Wish I'd known this last week, hehe. Just walked in the door back home from my Tokyo flight, dohh.
So how do I get and flash the Rogers radio? And why does typing this bring back memories from Airplane! ???
http://www.multiupload.com/QFXZ5D0GBK
Just flash via cwm and you will be good to go...
Sent from my Samsung Infuse 4G
SSJ_Gomike said:
http://www.multiupload.com/QFXZ5D0GBK
Just flash via cwm and you will be good to go...
Sent from my Samsung Infuse 4G
Click to expand...
Click to collapse
Do I need to install modded 3E recovery first, or just flash it from a stock rooted state in CWM?
I've not flashed a new radio before on this phone, so a step by step would be much appreciated.
Thanks!
Just out of curiosity do custom ROMs have this limitation?
Dman91 said:
Just out of curiosity do custom ROMs have this limitation?
Click to expand...
Click to collapse
I think so unless the rom includes a different radio.
Back to ME, hehe... what are the steps to flash and not fu#% anything up? lol
bella92108 said:
I think so unless the rom includes a different radio.
Back to ME, hehe... what are the steps to flash and not fu#% anything up? lol
Click to expand...
Click to collapse
Bella ur flashing again?
Sent from my SAMSUNG-SGH-I997R using XDA Premium App
What do you guys mean by a radio? radio device in the phone that communicates with the network?
tyshemi said:
Bella ur flashing again?
Sent from my SAMSUNG-SGH-I997R using XDA Premium App
Click to expand...
Click to collapse
Well I keep finding things that are limiting my experience with this phone. It's definitely been negative overall in comparison to my old Inspire 4g, which was so open, with many ROMs available, and none of the locked down attributes of this Infuse 4G.
So is it really the radio, or is it the ROM? And what are the upsides\downsides to flashing the Rogers ROM? I definitely need to be able to manually select my network, so if's become a non-issue, just need to know what the best way to accomplish it.
Advice\suggestions?
The limitations are built into the modem package.... Not the rom.
Right now the rogers modem performance (and when we say modem, we mean the modem software that tells the radio how to communicate with the network) is on par with the newest att modem with the only difference I can see it the being able to manually select any network.
Bella as for you, unless you rather use odin, to flash with clockworkmod you indeed need the modded 3e recovery and the I9000 version of cwm on your phone...
Sent from my Samsung Infuse 4G
SSJ_Gomike said:
The limitations are built into the modem package.... Not the rom.
Right now the rogers modem performance (and when we say modem, we mean the modem software that tells the radio how to communicate with the network) is on par with the newest att modem with the only difference I can see it the being able to manually select any network.
Bella as for you, unless you rather use odin, to flash with clockworkmod you indeed need the modded 3e recovery and the I9000 version of cwm on your phone...
Sent from my Samsung Infuse 4G
Click to expand...
Click to collapse
I installed mod'd 3e Recovery just fine, then flashed the radio posted above in this thread. Seems to have flashed fine, however the manual network selection is STILL greyed out. Any ideas as to why? Seems like another member who said the ROM (Stock AT&T Rooted) is responsible. Are you sure this isn't the case? Any idea as to why I can't manually select a network now?
Thanks!
Now with the Rogers Modem installed, when I go into Network Selection it still is greyed out and says "Default Setup" .. put in a foreign SIM that has both AT&T and T-Mobile USA provisioning allowed, and it doesn't let me select which to use.
:-(
Guess this doesn't resolve the issue. Anyone else have solution as to what I can do to get that Network Selection box available to use? This is the first phone I have ever owned that has disallowed access when I put in a foreign sim. It's getting really annoying dealing with Samsung's inadequacies between flashing and operational limitations, ugh. I would go back to HTC in a heartbeat if the Inspire 4G got better battery life. :-(
bella92108 said:
This is the first phone I have ever owned that has disallowed access when I put in a foreign sim. It's getting really annoying dealing with Samsung's inadequacies between flashing and operational limitations, ugh. I would go back to HTC in a heartbeat if the Inspire 4G got better battery life. :-(
Click to expand...
Click to collapse
I seriously feel you on this one. And if there were good general alternatives on the market from other brands, but this year seems to be in the gutter across the board.
Skv012a said:
I seriously feel you on this one. And if there were good general alternatives on the market from other brands, but this year seems to be in the gutter across the board.
Click to expand...
Click to collapse
I'm just baffled. How is there not a solution that'll allow me to select the network I attach to? I'm not even an AT&T customer. I paid full price for my handset, it's fully unlocked, doesn't even have the AT&T radio anymore, yet I can't select the carrier in the carrier selection menu? I weep for the future of this country's wireless industry if the ATT\T-MO merger goes through.
bella92108 said:
I'm just baffled. How is there not a solution that'll allow me to select the network I attach to? I'm not even an AT&T customer. I paid full price for my handset, it's fully unlocked, doesn't even have the AT&T radio anymore, yet I can't select the carrier in the carrier selection menu? I weep for the future of this country's wireless industry if the ATT\T-MO merger goes through.
Click to expand...
Click to collapse
Well, its called ATT-exclusive, almost a current flagship of a phone. I'd never buy it the way that you did, but I sincerely hope that you'll be able to iron this whole thing out.
I'm having trouble unlocking the stupid thing...
Skv012a said:
Well, its called ATT-exclusive, almost a current flagship of a phone. I'd never buy it the way that you did, but I sincerely hope that you'll be able to iron this whole thing out.
I'm having trouble unlocking the stupid thing...
Click to expand...
Click to collapse
Huh?
a) I'm able to use it just fine, why would you never buy it without contract? That makes no sense.
b) How are you having trouble unlocking it? It's the easiest unlock of any phone ever made. Doesn't get any more simple. Takes 10 seconds.

Run a SR on Tmobile H+ Network?

Hey I was just wondering if it was possible to unlock a Skyrocket then flash a Tmobile radio and receive H+ data speeds. How would I go about doing it? Which radio would you suggest? Thanks.
Nobody? Theretically it could be done but I just want someone to confirm for me.
After unlocking phone someone tried running t-mobile sim and he said only edge but he did not flash t989 radio so idk. If i can unlock it for free i will try it and let you know.
seanyuan62 said:
Nobody? Theretically it could be done but I just want someone to confirm for me.
Click to expand...
Click to collapse
appdroid said:
After unlocking phone someone tried running t-mobile sim and he said only edge but he did not flash t989 radio so idk. If i can unlock it for free i will try it and let you know.
Click to expand...
Click to collapse
I have an opportunity to get my hands on one of these phones very soon. I have a HTC HD2 on T-mobile's network. If it is not a bother, could you verify this? I wouldn'' want to be responsible for you bricking your phone, but I would be most appreciative for the information on it's possibilty if you know what you are doing.
It is unlocked.
What do you need me to verify?? I m confused !
Because you can run t**** on i727 with edge network plus you can flash t989 radios on i727 i done that before but not with t**** sim card.
Dimopolous said:
I have an opportunity to get my hands on one of these phones very soon. I have a HTC HD2 on T-mobile's network. If it is not a bother, could you verify this? I wouldn'' want to be responsible for you bricking your phone, but I would be most appreciative for the information on it's possibilty if you know what you are doing.
It is unlocked.
Click to expand...
Click to collapse
its not possible because t-mobile radios for skyrocket dont exist, so you can't flash an other radio for tmobile as it wont work and you migh just end up screwing your phone. tmobile sucks man, change to anything else.......if you like good hardware that it
Yes they exist what you talking about!! YOu can flash them. Here you can dload and flash it through cwm.
polish_pat said:
its not possible because t-mobile radios for skyrocket dont exist, so you can't flash an other radio for tmobile as it wont work and you migh just end up screwing your phone. tmobile sucks man, change to anything else.......if you like good hardware that it
Click to expand...
Click to collapse
looked for them, just found ATT and Rogers...and Japanese ones but i heared they dont work well at all
Well Da_G and irc team tried it so it works. IDK how it will work with tmobile sim because no one had tired it yet.
polish_pat said:
looked for them, just found ATT and Rogers...and Japanese ones but i heared they dont work well at all
Click to expand...
Click to collapse
HSPA+ will not work with the Skyrocket no matter if a radio exists or not. The simple reason is that supported H+ frequencies are 1700 for download and 2100mhz for upload and skyrocket only goes 1900mhz and 2100mhz. So unless you are able to enable the 1700mhz frequency, 4G or 3G will not work with the skyrocket! Edge is the only frequency that will
polish_pat said:
HSPA+ will not work with the Skyrocket no matter if a radio exists or not. The simple reason is that supported H+ frequencies are 1700 for download and 2100mhz for upload and skyrocket only goes 1900mhz and 2100mhz. So unless you are able to enable the 1700mhz frequency, 4G or 3G will not work with the skyrocket! Edge is the only frequency that will
Click to expand...
Click to collapse
Its already been proven that the SR has the 1700/2100 bands, just not enabled in software. Its why we can flash their modems and it works perfectly fine.
Sent from my SAMSUNG-SGH-I727 using xda premium
Thank you! I don't get the reason why new ppl don't listen!! Its like look son trying to argue with his dad who has twice experience!! Noob should just listen rather than arguing. No personal offense but i had so many ppl with the issue like this.
By the way our irc is long dead. Hav you seen da_g or tpc there at all??
Longcat14 said:
Its already been proven that the SR has the 1700/2100 bands, just not enabled in software. Its why we can flash their modems and it works perfectly fine.
Sent from my SAMSUNG-SGH-I727 using xda premium
Click to expand...
Click to collapse
I'll be travelling to the states next week and will flash either the Telus or Tmobile radio to use Tmobile's prepaid plans. If no one's replied back to you by then, I'll let you know what I find.
However, there are already reported success of people with SR and the Telus radio using the phone on Canada's 1700 AWS network (Wind).. so pretty sure it'll work. Flashing the radio is safe as well, I've already done it once.
Well make sure you do nandroid before flashing that t989 radio. Plus he wants to know how it will run with tmobile sim card and t989 radio on unlocked phone.
tom0927 said:
I'll be travelling to the states next week and will flash either the Telus or Tmobile radio to use Tmobile's prepaid plans. If no one's replied back to you by then, I'll let you know what I find.
However, there are already reported success of people with SR and the Telus radio using the phone on Canada's 1700 AWS network (Wind).. so pretty sure it'll work. Flashing the radio is safe as well, I've already done it once.
Click to expand...
Click to collapse
worked for me using a wind mobile sim and tmobile radio (same bands) only wind's network isn't the fastest to say the least.
appdroid said:
Well make sure you do nandroid before flashing that t989 radio. Plus he wants to know how it will run with tmobile sim card and t989 radio on unlocked phone.
Click to expand...
Click to collapse
Yep, I'll definitely make a nandroid backup before flashing.. and try both the Tmobile and Telus to see which one is better.
tom0927 said:
Yep, I'll definitely make a nandroid backup before flashing.. and try both the Tmobile and Telus to see which one is better.
Click to expand...
Click to collapse
Thanks I appreciate it
OK, I'm in Orlando now and got the T-Mobile prepaid plan...I flashed the T-Mobile vk1 radio and for some reason, I can't connect to any data. I wasn't even able to go into the mobile network settings screen to see the apn settings. Got a msg to insert a sim card to access services...
I then flashed the telus radio and got 3g right away. Speeds are pretty pathetic tho...only 2m down...maybe I'm just too spoiled by lte
Anyways, it's been a long tiring day so I won't do anymore testing right now..maybe tmr I'll try the other kl1 T-Mobile radio.
Sent from my SGH-I727R using xda premium
tom0927 said:
OK, I'm in Orlando now and got the T-Mobile prepaid plan...I flashed the T-Mobile vk1 radio and for some reason, I can't connect to any data. I wasn't even able to go into the mobile network settings screen to see the apn settings. Got a msg to insert a sim card to access services...
I then flashed the telus radio and got 3g right away. Speeds are pretty pathetic tho...only 2m down...maybe I'm just too spoiled by lte
Anyways, it's been a long tiring day so I won't do anymore testing right now..maybe tmr I'll try the other kl1 T-Mobile radio.
Sent from my SGH-I727R using xda premium
Click to expand...
Click to collapse
Thank you sir. This is what I feared-hopefully the other radio serves you better.
So no update on how the radio worked?

[Q] AT&T to VZW

First of all, sorry if I posted this in the wrong forum or if it has been asked somewhere already, but I was not able to find it anywhere though Google and searching through this site.
Anyways, I was wondering if it is possible to fully and effectively unlock a AT&T S3 to use on the VZW network. I know vzw has a secured cdma network that only allows approved devices but with all the great devs out there, is there some wah to do it? Thanks for any input !
Sent from my SCH-I535 using Tapatalk 2
I don't think you can do that as Verizon uses different lte bands and two its cdma network even tho it uses a sim! I could be wrong but I know it can only work the other way round but thats only on 3G tho
Sent from my SCH-I535 using xda app-developers app
I have the same problem except the other way around...I want to convert a Verizon one to att. I already flashed a AT&T rom and have working voice and data, but only 2g which is so slow, I don't even remember how I lived with it. I'm thinking of just buying a motherboard from the att one and sticking it in my Verizon one. Does anyone know if the motherboard has the part I need for the radios, or is the radio separate?
Sounds easier to try to do a trade on Craigslist or something.
Sent from my SCH-I535 using xda app-developers app
I've also running on EDGE connection, which is horrid, but livable. Due to thaat I'm running a T-Mobile network on a Verizon S3.

[Q] 2 week trip to Scotland - best prepaid options?

Hello all,
As the title states, I'm taking a two week trip to Scotland in August. I require "local" voice/text and internet (unlimited?) would be a HUGE plus (especially for gps use).
T-mobile seems to have a $42-something plan which includes all the above, but I would be upset if my phone didn't work well with it for some reason when we landed. I'm currently on AT&T running Cyanogenmod 3.0.66? and Slimbean 4.2 and very willing to reflash to more appropriate roms.
My questions are:
1. Is it reasonable for me to bring my S2 and use a prepaid SIM, taking the risk something may not work? If so, what kernal/rom is best for Europe (say T-Mobile, etc) ?
2. Does anyone have a better option? This is my first time abroad and I'm open to advice.
I haven't been on xda for a while, so I apologize if this information is generally available. I did attempt to search but couldn't find what I was looking for.
Please help this old man!
Side question: Anyone have a good experience to report with an offline gps app?
Use a rom which supports GSM so go into settings mobile network and then network settings and see if you have WCDMA / GSM. That means it will work here. Also the best and cheapest sim card to get here is a Giffgaff one.
Also, regarding Gps, it's Scotland... You won't get lost.
Giffgaff give for £10 unlimited texts, 250 or 500min call and 1gb data... So just use data with Gps.
There is a cut down version of that for £5 but I'd rather have more Internet to use maps.
You can convert the £££ into $$$
Sent from my Sony Xperia Z Ultra using XDA Premium HD
If T-Mobile in Scotland uses the same frequencies as here in the USA, it would be reasonable to use the stock tmobile UVMC6 plus skyrocket JB kernel plus either UCMC1 radio OR UVMB1(blaze 4G radio)
Here's the rom,I used it on my rocket for sometime
http://forum.xda-developers.com/showthread.php?t=2344942
But you have to flash a skyrocket kernel to correct screen rotation..Mohan has one in the dev section
Search for UVMB1 radio for data on AWS at HSPA...I don't think the Scottish have LTE on T-Mobile yet or even UCMC1 would work on their data if the use 1700/2100 AWS on LTE...
Have a nice trip...Scotland is a beautiful country...
mahanddeem said:
If T-Mobile in Scotland uses the same frequencies as here in the USA, it would be reasonable to use the stock tmobile UVMC6 plus skyrocket JB kernel plus either UCMC1 radio OR UVMB1(blaze 4G radio)
Here's the rom,I used it on my rocket for sometime
http://forum.xda-developers.com/showthread.php?t=2344942
But you have to flash a skyrocket kernel to correct screen rotation..Mohan has one in the dev section
Search for UVMB1 radio for data on AWS at HSPA.
Click to expand...
Click to collapse
I agree, however will this work on my current AT&T provider until I land in Scotland? This is my primary cellphone.
The rom, yes...
The radio, if you use LTE here, it will not work on UVMB1, but HSPA is ok
My plan would be
1.Flash the T-Mobile rom now
2.Flash the skyrocket kernel now
3.Leave your radio alone..
4.Have few T-Mobile radios like UVMB1 on your sd, flash it on board at the airplane do it would be ready there...
Of course that's if you choose to go with tmobile path...
akaneo said:
I agree, however will this work on my current AT&T provider until I land in Scotland? This is my primary cellphone.
Click to expand...
Click to collapse
Taylor_Swift said:
Use a rom which supports GSM so go into settings mobile network and then network settings and see if you have WCDMA / GSM. That means it will work here. Also the best and cheapest sim card to get here is a Giffgaff one.
Also, regarding Gps, it's Scotland... You won't get lost.
Giffgaff give for £10 unlimited texts, 250 or 500min call and 1gb data... So just use data with Gps.
There is a cut down version of that for £5 but I'd rather have more Internet to use maps.
You can convert the £££ into $$$
Sent from my Sony Xperia Z Ultra using XDA Premium HD
Click to expand...
Click to collapse
Thank you for your quick reply. I briefly looked into Giffgaff, and it seems like they charge for anything not between other Giffgaff users. This would make calling hotels, etc still costly. Plus, it looks like I need a UK postcode to receive a SIM card.
Also, we plan on doing some driving all throughout Scotland and the GPS option would greatly decrease any stress related to traveling, but thank you for your reassurance! :fingers-crossed:
mahanddeem said:
The rom, yes...
The radio, if you use LTE here, it will not work on UVMB1, but HSPA is ok
My plan would be
1.Flash the T-Mobile rom now
2.Flash the skyrocket kernel now
3.Leave your radio alone..
4.Have few T-Mobile radios like UVMB1 on your sd, flash it on board at the airplane do it would be ready there...
Of course that's if you choose to go with tmobile path...
Click to expand...
Click to collapse
I like the way you think, buddy. So far if I can find an appropriate SIM plan, that is what I'll be doing.
akaneo said:
Thank you for your quick reply. I briefly looked into Giffgaff, and it seems like they charge for anything not between other Giffgaff users. This would make calling hotels, etc still costly. Plus, it looks like I need a UK postcode to receive a SIM card.
Also, we plan on doing some driving all throughout Scotland and the GPS option would greatly decrease any stress related to traveling, but thank you for your reassurance! :fingers-crossed:
Click to expand...
Click to collapse
Use the £5 or £10 goody bag. You can call anything in UK. Landlines, Mobiles and all. They don't care.
You can get the sims at shops too. Just the websites says post code.
250 or 500min is to landlines and whatever. The Giffgaff to Giffgaff ones are free.
Sent from my Sony Xperia Tablet Z using XDA Premium HD
It is good to research on network options while you're here...But probably you'll find a cell phones shop in the airport and buy a SIM from there..
Go to Wikipedia and read about their network bands, if they are compatible with AT&T specifications, you might need nothing done and your phone would work right away as soon as you put the new SIM and setup the correct apn...Of course that's if your phone is already unlocked..
By the way sir, this is the general section, all questions should be in Q/A forum...

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