Need expert help to determine which model I have - AT&T, Rogers, Bell, Telus Samsung Galaxy S III

I have already been given great help (http://forum.xda-developers.com/showthread.php?t=2082364) but still don't really know what S3 I have?
Finding out what phone I got should be a easy task, but I get different information wherever I look.
Connected to Kies:
Device name: SGH-I747M PDA:LEM / PHONE:LEM /CSC:LEM (TLS)
Printed on phone (under battery):
GT-I9300
Setting- About device:
Baseband:T999UVLEM
Bulid number: romup dott com
Friend at Telenor (operator) says it comes up as 999 in the network
After taking the phone apart looking for clues I got more confused!
Got this Galaxy 3, in Chongqing China. In the middle of the haggling proses (700USD) I discovered that the IMEI on the box and the phone wasn’t matching (every possible thing have to be inspected in china). The seller didn't seem bothered by my questions about the IMEI, and told me something about Hong Kong, UK and smuggling, I didn't really get it! After some more negotiation I got the phone down to about 500USD, and where told 700USD if I wanted same IMEI on the box and the phone.
Anyway now I want stock rom on my phone and are unsure what rom to install?

And a picture from the back of the phone.

SGH-T999 is TMobile's id, but that can changed/faked by a new modem's baseband id, and the SGH-I747M (canadian s3 on rogers, but att similar) id can be changed by a custom rom's build prop.
i9300 is the international model, but if you don't have an Exynos chipset, then it's not really the international S3, as all the US variants have Qualcomm.
*shrug*
China.

Okey, so here I found a picture of a random 9300 and compered to my phone it seems a bit different. Does anyone with the 747 know how this part look like?

Is there any forum where the different hardware is discussed?

That's... a really weird device you have there.
In my experienced but amateur opinion, of all the info you've given us, the bit that's least likely to be able to be faked successfully would be the modem baseband, seeing as trying to use an incompatible baseband with a given device tends to either cause the phone to not recognise the baseband or to just fail to boot altogether. I'm also aware that in some circumstances, i747 ROMs can be successfully run on T999s (and possibly vice-versa), given that the hardware between T999s and i747s is similar (not as identical as, say, the i747 and i747m, but still possible).
Thus, I'm inclined to believe the base hardware is supposed to be a T999, which would be the T-Mobile version of the phone.
EDIT: Looking at the pictures, I'm inclined to believe your phone's been cobbled together from spare parts, with the base being a T999 and a lot of parts taken from an i747 - but the core phone probably would operate closest to a T999. What network are you running it on? That might help us figure things out further.

smelenchuk said:
That's... a really weird device you have there.
In my experienced but amateur opinion, of all the info you've given us, the bit that's least likely to be able to be faked successfully would be the modem baseband, seeing as trying to use an incompatible baseband with a given device tends to either cause the phone to not recognise the baseband or to just fail to boot altogether. I'm also aware that in some circumstances, i747 ROMs can be successfully run on T999s (and possibly vice-versa), given that the hardware between T999s and i747s is similar (not as identical as, say, the i747 and i747m, but still possible).
Thus, I'm inclined to believe the base hardware is supposed to be a T999, which would be the T-Mobile version of the phone.
EDIT: Looking at the pictures, I'm inclined to believe your phone's been cobbled together from spare parts, with the base being a T999 and a lot of parts taken from an i747 - but the core phone probably would operate closest to a T999. What network are you running it on? That might help us figure things out further.
Click to expand...
Click to collapse
Thanks for your info, my network is telenor mobil norway, and I have used the phone without problem around Asia and Europe.

Maybe its 2 phones that has broken parts and were combined to make 1 usable phone? That's what that looks like to me anyway
Sent from my SGH-I747 using xda premium

So the hardware do not look like the 747M? Tried to fine pictures online, but hard to find.

Download "android hardware info" and look through that. It'll say if it has 2 cores or 4 cores, etc. Build model. And what the device and product say.
Sent from my SAMSUNG-SGH-T989 using xda premium

I can't give help other than what's already been said, but my advice is don't buy things from China. And as soon as he said smuggling I would've walked out.

gulbir101 said:
Download "android hardware info" and look through that. It'll say if it has 2 cores or 4 cores, etc. Build model. And what the device and product say.
Sent from my SAMSUNG-SGH-T989 using xda premium
Click to expand...
Click to collapse
Not sure I downloaded the right app? But here is the info:
PROCESSOR (ARMv7)
Processor: ARMv7 Processor rev 0 (v7l)
Cores: 2
Max Frequency: 1512 Mhz
Instruction Sets: armeabi-v7a, armeabi
NEON Supported: Yes

I'm going to go out on a limb and say that it is a Tmobile variant. The T999. Though it does look like they just threw crap together, so there is no telling if you can just flash a stock TMobile ROM. The hardware is virtually the same, but there are some difference, mainly in the radio. So, you should be able to just Flash either any ROM (custom, not stock) from either AT&T forum or TMobile forum.
The radio is going to depend on what kind of phone service you are hooking into. Who is your network operator?

shoestar said:
I'm going to go out on a limb and say that it is a Tmobile variant. The T999. Though it does look like they just threw crap together, so there is no telling if you can just flash a stock TMobile ROM. The hardware is virtually the same, but there are some difference, mainly in the radio. So, you should be able to just Flash either any ROM (custom, not stock) from either AT&T forum or TMobile forum.
The radio is going to depend on what kind of phone service you are hooking into. Who is your network operator?
Click to expand...
Click to collapse
Im using telenor mobil in Norway. Is the radio a hardware component that is possible to locate, so I can know for sure?

interrogation said:
Not sure I downloaded the right app? But here is the info:
PROCESSOR (ARMv7)
Processor: ARMv7 Processor rev 0 (v7l)
Cores: 2
Max Frequency: 1512 Mhz
Instruction Sets: armeabi-v7a, armeabi
NEON Supported: Yes
Click to expand...
Click to collapse
So that cuts out the international version. Either you have T-Mobile or ATT. As for radio, I can't find anything. You probably would have to try a T-Mobile or ATT radios to see which works.
Sent from my SAMSUNG-SGH-T989 using xda premium

gulbir101 said:
So that cuts out the international version. Either you have T-Mobile or ATT. As for radio, I can't find anything. You probably would have to try a T-Mobile or ATT radios to see which works.
Sent from my SAMSUNG-SGH-T989 using xda premium
Click to expand...
Click to collapse
Thanks, is there any risk regarding flashing wrong radio?

interrogation said:
Thanks, is there any risk regarding flashing wrong radio?
Click to expand...
Click to collapse
Nope. If you don't get signal, flash the other.

shoestar said:
Nope. If you don't get signal, flash the other.
Click to expand...
Click to collapse
Great think I will try this, what rom do you recommend me to start off with? Any step-by-step guides? I have the rom manager app, is it possible to install from memory card?

Seeing as I'm not the only one who thinks this is most likely T999-based, I'd start with one of the stock ROMs for that model of device.

smelenchuk said:
Seeing as I'm not the only one who thinks this is most likely T999-based, I'd start with one of the stock ROMs for that model of device.
Click to expand...
Click to collapse
Thanks for the link, from what I can read im not sure if I can use the rom?
How to Flash the OTA's
Requirements:
Unmodified stock system
No modem or kernel changes

Related

Question: SGN CDMA Hardware Vs. GSM Hardware - Difference? - Testing

Ok,
I've been looking for an official spec data sheet on the CDMA and GSM Versions of SGN. Thus far I am unable to find it - I've found the generic spec thus far but nothing in detail.d
Verizon is sending me a new SGN This week and Im going to flash GSM Radio's to CDMA Phone (Yes, I know you dont need to say it) I am taking a gamble that the SGN is a Quad band phone like Rezound. (It has the menu interface for GSM both 3g and 4g) - Personally I would like to see the ability to use CDMA or GSM (Pick on boot or within the ROM) Similar to 4g/3g Swapping.
Let me know If I sound nuts.
Nuts.
But if it would work you'd be called a genius and loved like Einstein in your avatar.
Im thinking it's gonna brick the device but im not worried about that.
Anyone else think its gonna brick the device?
Super nuts. I hope it doesn't brick it but just brakes the radios. Good luck man.
Sent from my Galaxy Nexus using xda premium
Ok, I just Flashed
http://forum.xda-developers.com/showpost.php?p=20312089&postcount=6
It didn't brick the device (I assume because its radio only and not the BaseBand)
Gonna reflash my Hybrid 4.0.4 Radio to make sure all is well
Then reflash this and flash a GSM baseband/bootloader
IMO I call BullSh*t to Verizons Non-world phone idea. I think they pushed the phone out so fast that it was built on a universal hardware platform and the software is the limiting factor.
Ok, Flashed the Standard Euro Baseband XXKK6 - No luck on signal or getting IMEI off the phone now.
Gonna run to Tmobile and get a New Simcard for my extra account. At this point I am assuming the sim lock is blocking any efforts to use the GSM Bands.
Atlantian said:
Ok,
I've been looking for an official spec data sheet on the CDMA and GSM Versions of SGN. Thus far I am unable to find it - I've found the generic spec thus far but nothing in detail.d
Verizon is sending me a new SGN This week and Im going to flash GSM Radio's to CDMA Phone (Yes, I know you dont need to say it) I am taking a gamble that the SGN is a Quad band phone like Rezound. (It has the menu interface for GSM both 3g and 4g) - Personally I would like to see the ability to use CDMA or GSM (Pick on boot or within the ROM) Similar to 4g/3g Swapping.
Let me know If I sound nuts.
Click to expand...
Click to collapse
Atlantian said:
Im thinking it's gonna brick the device but im not worried about that.
Anyone else think its gonna brick the device?
Click to expand...
Click to collapse
You're stupid. You cant accomplish anything with this. It will NEVER work on a GSM network dude. Just buy a goddamn GSM version. You think you're just some pioneer that's going to crack this, as if its not widely known that the phones are physically different? It doesn't have the proper GSM radios in it...
You're just going to brick it. Before you do, why not just sell it and donate the money to charity. Money better used...
Is this a joke..?
So by your logic I can put a Verizon LTE sim card in my GSM nexus and achieve LTE speeds? Since you know, the hardware is the same.
Sent from my Galaxy Nexus using xda premium

Can I use T-Mobile Galaxy S II on AT&T by flashing the AT&T Kernel?

I'm asking if this is possible as I was able to use my T-Mobile Galaxy Tab 7 on AT&T by doing the same. Thanks
I don't think you have to flash kernel to use this phone in Att network. The phone does support Att 3G bands(in most areas) in hardware. Flashing att kernel may brick.
JoJo2211 said:
I'm asking if this is possible as I was able to use my T-Mobile Galaxy Tab 7 on AT&T by doing the same. Thanks
Click to expand...
Click to collapse
At most you would want to flash an AT&T Radio not a Kernel, your phone will not work right with a AT&T kernel ...
Search around there have been some discussions on the Radios, I think , I may be wrong, but people were having success with the Rogers radio ...
But as the other poster said, it will work on the AT&T 3G bands anyway, after you sim unlock it ...
just flash an att radio. Oh ps: skyrocket Kernel will not brick your phone.
Sent from my SGH-T989 using xda premium
JoJo2211 said:
I'm asking if this is possible as I was able to use my T-Mobile Galaxy Tab 7 on AT&T by doing the same. Thanks
Click to expand...
Click to collapse
I think all you need to do is get an unlock code and you'll be good to go.
As mentioned before, the phone supports AT&T 3G bands from the get go. I'm using my Skyrocket on AWS HSPA+ as well, both the Hercules and Skyrocket support each others networks (at least 3g in the case of Hercules)
Why not just get the AT&T model? It IS better...
Flashing att kernel will absolutely not brick your phone. It will be completely functional after turning off auto rotation.
Sent from my Skyrocket using XDA App
Thanks guys, is there a way to Unlock the phone using a free method? If not do you suggest I flash a rogers or skyrocket radio and get the t989 working on at&t?
BTW, i'm using this phone because I got it for really cheap off of craigslist(200)
JoJo2211 said:
Thanks guys, is there a way to Unlock the phone using a free method? If not do you suggest I flash a rogers or skyrocket radio and get the t989 working on at&t?
BTW, i'm using this phone because I got it for really cheap off of craigslist(200)
Click to expand...
Click to collapse
You don't need to flash any of the radios, it'll work out of the box once you unlock it
Is there a free unlock available anywhere? I tried Galaxy S unlock on the market but I get an error every time i run step 1. I'm rooted with busybox installed. Thanks
The Galaxy S unlock app doesn't work for this phone at the moment. Some Devs are working on finding the unlock key location though.
JoJo2211 said:
...really cheap off of craigslist...
Click to expand...
Click to collapse
Possibly related: I've no idea if At&T and T-mob share banned IMEI lists. Anybody know?
2hvy4grvty said:
Why not just get the AT&T model? It IS better...
Click to expand...
Click to collapse
The two phones are identical genius.
PJcastaldo said:
The two phones are identical genius.
Click to expand...
Click to collapse
Not to be pedantic, but... you might want to be a bit careful about calling people 'genius' - unless it's possible for two phones that have different external dimensions, different sized screens, different processors, and a few other things... to still be identical.
SGS2 T-mobile specs
SGS2 AT&T specs
both links are from the Samsung US site.
For that matter, flip the two phones over and look at them. The T-Mob back cover covers the entire back and the flash is below the camera, The AT&T (and international?) version's back cover doesn't cover the whole back and the flash is to the side of the camera.
I'm also pretty sure our version should be just a hair faster (1.5 GHz, Dual Core (Qualcomm Snapdragon S3) vs 1.2 GHz, Dual Core (Samsung Exnyos C210) ).
To be fair, I'm not 100% sure I can compare Snapdragon 1.5GHz to Exnyos 1.2GHz, but I think that's legit as both run the same instruction set, probably have similar pipelining, etc.
BTW, PJC: how is the at&t model better? From the spec, I get that it's a bit lighter (13g), and probably has better battery life as it's driving a bit smaller screen. Anything else?
bobkoure said:
Not to be pedantic, but... you might want to be a bit careful about calling people 'genius' - unless it's possible for two phones that have different external dimensions, different sized screens, different processors, and a few other things... to still be identical.
SGS2 T-mobile specs
SGS2 AT&T specs
both links are from the Samsung US site.
For that matter, flip the two phones over and look at them. The T-Mob back cover covers the entire back and the flash is below the camera, The AT&T (and international?) version's back cover doesn't cover the whole back and the flash is to the side of the camera.
I'm also pretty sure our version should be just a hair faster (1.5 GHz, Dual Core (Qualcomm Snapdragon S3) vs 1.2 GHz, Dual Core (Samsung Exnyos C210) ).
To be fair, I'm not 100% sure I can compare Snapdragon 1.5GHz to Exnyos 1.2GHz, but I think that's legit as both run the same instruction set, probably have similar pipelining, etc.
BTW, PJC: how is the at&t model better? From the spec, I get that it's a bit lighter (13g), and probably has better battery life as it's driving a bit smaller screen. Anything else?
Click to expand...
Click to collapse
Wow, Im really LOLing atm. You are comparing the other ATT GS2, not the skyrocket. You better research and know what hes talking about first and not just posting random stuff.
Maybe my new thread can help
http://forum.xda-developers.com/showthread.php?t=1495920
or
http://forum.xda-developers.com/showthread.php?t=1417095
bobkoure said:
Possibly related: I've no idea if At&T and T-mob share banned IMEI lists. Anybody know?
Click to expand...
Click to collapse
It doesn't have banned IMEI. I got a great deal. I actually bought two phones, HTC Amaze and GSII, , both clean IMEI, for 400 altogether. I sold off the Amaze for 435. LOL
bobkoure said:
Possibly related: I've no idea if At&T and T-mob share banned IMEI lists. Anybody know?
Click to expand...
Click to collapse
no they do not, banned t-mobile phones are banned for their carrier only so you can use it on att and vice versa
bobkoure said:
Not to be pedantic, but... you might want to be a bit careful about calling people 'genius' - unless it's possible for two phones that have different external dimensions, different sized screens, different processors, and a few other things... to still be identical.
SGS2 T-mobile specs
SGS2 AT&T specs
both links are from the Samsung US site.
For that matter, flip the two phones over and look at them. The T-Mob back cover covers the entire back and the flash is below the camera, The AT&T (and international?) version's back cover doesn't cover the whole back and the flash is to the side of the camera.
I'm also pretty sure our version should be just a hair faster (1.5 GHz, Dual Core (Qualcomm Snapdragon S3) vs 1.2 GHz, Dual Core (Samsung Exnyos C210) ).
To be fair, I'm not 100% sure I can compare Snapdragon 1.5GHz to Exnyos 1.2GHz, but I think that's legit as both run the same instruction set, probably have similar pipelining, etc.
BTW, PJC: how is the at&t model better? From the spec, I get that it's a bit lighter (13g), and probably has better battery life as it's driving a bit smaller screen. Anything else?
Click to expand...
Click to collapse
lol wut? genius
---------- Post added at 02:47 PM ---------- Previous post was at 02:46 PM ----------
JoJo2211 said:
It doesn't have banned IMEI. I got a great deal. I actually bought two phones, HTC Amaze and GSII, , both clean IMEI, for 400 altogether. I sold off the Amaze for 435. LOL
Click to expand...
Click to collapse
you got a really good deal off of it but you don't have to keep posting it over and over.
The two phones are virtually identical , but I will qualify that ..
T-Mobile t989 has a slightly larger screen .02" to be exact and a little different form factor , and a slightly larger battery ..
Both have the same CPU, but different chipsets, if what my research shows is correct, the AT&T i727 has the radio included in the CPU chipset, where the TMO t989 has a separate radio chip ...
The t989 has no LTE specific hardware, although theoretically can achieve the same speeds ...
So they are almost , the same phone ...
The one difference that I can neither confirm or deny, is everywhere I look Gorilla Glass is always talked about on the t989 , but is not mentioned in the i727 , and least from the sources I trust, but personally I would not think it would not have it ...
Some people have reported better AT&T usage using the Rogers radio, but the stock radio will work on the AT&T 3g network ...
http://www.gsmarena.com/samsung_galaxy_s_ii_t989-4129.php
http://www.gsmarena.com/samsung_galaxy_s_ii_skyrocket_i727-4303.php
EDIT: a Skyrocket kernel will not brick your phone just as others say, but autorotation will be flipped, and there have been "other" things reported, but certainly will not brick, unless you do it wrong ...

[Q] AT&T radio on T999?

I've had many Android devices over the years and flashed a few ROMs in my day. I haven't messed with any of that in quite a long while though.
I've recently switched from all Sprint and all HTC devices to T-Mobile's Galaxy S3. I searched and found the thread about the Team Sonic modem flasher. I tried to read as much as possible but don't think my question is answered there.
Basically.. I get no service at my house and cannot manually select the AT&T network. Everyone with AT&T (including my girlfriend who has the S3) gets service here. Can I flash an AT&T baseband on my T999? I currently have UVLJ4 and get nothing inside and 2G outside whereas all the AT&T people get 4G in my house.
Hope this hasn't been answered before.
Thanks
Sam
Pretty sure that's a no-no.
I think you could flash the modem, but you need to verify they use the exact same partition on both variants. If it flashed to the wrong partition you're likely to hard brick the phone.
An att modem is not going to get you on the att network. I seriously doubt it'd even let you even make a phone call on tmobiles network, though it could happen. I can't figure any real reason (other than pure dumb luck) that another carriers modem would be better than one coded specifically for the network you are on.
Your best bet is to try out all the available modems we already have before thinking about trying another carriers fw.
And search again, but look in the development stickies too! You may find other things you could try. For the moment the modem flasher is quite outdated. I may work on updating it this coming week for those who are still wanting it. We'll see!
Sent from my SGH-T999 using xda app-developers app
Aerowinder said:
Pretty sure that's a no-no.
Click to expand...
Click to collapse
Will this no-no brick my phone or will I just not be able to get any service once flashed and then flash back? I've been trying to scour XDA and the rest of the internet for answers. So far I found this info..
"The modems in the GS3 are SDR or software defined radios. Their frequency TX and RX spectrums can be modified through software. The nice thing about the MSM8960 SOC board is that the radios can be programmed to virtually any current GSM, HSPA or LTE frequency in use in the United States today"
If this is true, I should just be able to flash an AT&T baseband, correct? Then again, I read that the T999 doesn't have the LTE compatibility that every other S3 has. Is this software or hardware defined?
Its a hw limitation.
Call tmobile and let them know the situation. Since you're new to their network I doubt they'd do it but I've heard of them providing a cell repeater to put in your home. Worst they'll say is no!
Sent from my SGH-T999 using xda app-developers app
DocHoliday77 said:
I think you could flash the modem, but you need to verify they use the exact same partition on both variants. If it flashed to the wrong partition you're likely to hard brick the phone.
An att modem is not going to get you on the att network. I seriously doubt it'd even let you even make a phone call on tmobiles network, though it could happen. I can't figure any real reason (other than pure dumb luck) that another carriers modem would be better than one coded specifically for the network you are on.
Your best bet is to try out all the available modems we already have before thinking about trying another carriers fw.
And search again, but look in the development stickies too! You may find other things you could try. For the moment the modem flasher is quite outdated. I may work on updating it this coming week for those who are still wanting it. We'll see!
Sent from my SGH-T999 using xda app-developers app
Click to expand...
Click to collapse
We replied at the same times and I did not see this until I had already posted. Thank you. I guess I will try previous T-Mobile modems and see if one happens to be better for me. All I want is to roam but the phone won't let me choose the AT&T network even though it shows up in the network search. Customer service told me you are unable to roam as long as a T-Mobile network is available at your location.
I do not want to risk bricking so I will stay away from trying the AT&T modem as I am not familiar with this phone or any flashing that has come about in the past 2-3 years.

[Q] Modding the GT-n7105 to get LTE on Tmobile

I was recently gifted a Note 2, which is awesome and I love it, but I feel it's a shame for such a nice phone to be stuck on edge, even with Tmobile's refarming (laaaaaame). Everything I can find on Google says that it's a hardware limitation, not firmware. So I wonder, what if I swapped out the radios?
I'm aware that such a feat would require replacing the entire motherboard. If I buy a T889 motherboard and put it in my phone, what kind of issues would I run into, if any? I would have to flash firmwares and radios and such- would going to the Tmobile Note 2 board and flashing everything stock that I find over there be sufficient? Any IMEI issues that I would run into? Would my phone now be considered a SGH-T889?
No, returning/reselling and buying the T889 isn't an option. It's too much effort for uncertain risks for something I don't care all that much about. I'd be open to a trade, but it would have to be an exact counterpart to my own (unlocked, titanium gray, screen protector from new, great condition). I'm sure trading is much easier, but modding sounds much more fun.
Even if I do the mod, it won't be right away, as motherboards are rather scarce and the prices are higher than I'm willing to pay.
Not sure if it matters, but my note 2 is stock rooted and my efs partition is backed up.
Selofain said:
I was recently gifted a Note 2, which is awesome and I love it, but I feel it's a shame for such a nice phone to be stuck on edge, even with Tmobile's refarming (laaaaaame). Everything I can find on Google says that it's a hardware limitation, not firmware. So I wonder, what if I swapped out the radios?
I'm aware that such a feat would require replacing the entire motherboard. If I buy a T889 motherboard and put it in my phone, what kind of issues would I run into, if any? I would have to flash firmwares and radios and such- would going to the Tmobile Note 2 board and flashing everything stock that I find over there be sufficient? Any IMEI issues that I would run into? Would my phone now be considered a SGH-T889?
No, returning/reselling and buying the T889 isn't an option. It's too much effort for uncertain risks for something I don't care all that much about. I'd be open to a trade, but it would have to be an exact counterpart to my own (unlocked, titanium gray, screen protector from new, great condition). I'm sure trading is much easier, but modding sounds much more fun.
Even if I do the mod, it won't be right away, as motherboards are rather scarce and the prices are higher than I'm willing to pay.
Not sure if it matters, but my note 2 is stock rooted and my efs partition is backed up.
Click to expand...
Click to collapse
1. research/check on the LTE frequency bands t mobile uses then go check for example at gsmarena.com if the N7105 supports those bands by checking it's technical specifications
2. in the mean time you can try this.. go to SETTINGS then MORE SETTINGS then MOBILE WIRELESS change your NETWORK MODE to LTE/GSM/WCDMA AUTO
if this doesn't work and t mobile runs in an LTE frequency band supported by your handset it could also mean you need to upgrade/replace your SIM card .....same number but the new chip has LTE features inside it..it's possible
Sent from my GT-N7105 using Tapatalk 4
dead soul said:
1. research/check on the LTE frequency bands t mobile uses then go check for example at gsmarena.com if the N7105 supports those bands by checking it's technical specifications
Click to expand...
Click to collapse
I've done my research on this. Tmobile uses AWS, which the n7105 doesn't support. Tmobile is refarming some of their 1900Mhz to free up frequencies for LTE, which the n7105 does support, but I'm not getting 3G speeds in those areas at all. I've seen around these boards that I'm not the only one to do so.
dead soul said:
2. in the mean time you can try this.. go to SETTINGS then MORE SETTINGS then MOBILE WIRELESS change your NETWORK MODE to LTE/GSM/WCDMA AUTO
if this doesn't work and t mobile runs in an LTE frequency band supported by your handset it could also mean you need to upgrade/replace your SIM card .....same number but the new chip has LTE features inside it..it's possible
Click to expand...
Click to collapse
As I said before, my research indicates that it's a radio hardware issue, not firmware. There are posts on how to get AT&T/Verizon/Sprint/Tmobile versions to work on each other's networks, but not much on getting international versions to fully support LTE in the US. Besides, I get 4G just fine in my old G2.
Which brings me to my original question- what issues would I run into should I do a motherboard swap?
Bump.
Selofain said:
I've done my research on this. Tmobile uses AWS, which the n7105 doesn't support. Tmobile is refarming some of their 1900Mhz to free up frequencies for LTE, which the n7105 does support, but I'm not getting 3G speeds in those areas at all. I've seen around these boards that I'm not the only one to do so.
As I said before, my research indicates that it's a radio hardware issue, not firmware. There are posts on how to get AT&T/Verizon/Sprint/Tmobile versions to work on each other's networks, but not much on getting international versions to fully support LTE in the US. Besides, I get 4G just fine in my old G2.
Which brings me to my original question- what issues would I run into should I do a motherboard swap?
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Click to collapse
I have seen my note II bring opened up and I have seen a video of a N7100 being open up...they are virtually identical to me atleast.... I saw all the complex/circuitry /smart chips were all on one board like RAM, CPU including the radio...Obb the motherboard..most things if not all which connect to the motherboard are dumb circuits like there was a small board which holds the charging port and Mic and that board has a cable to connect to the main mother board...which I'm pretty sure it's dumb.no advanced circuitry...the 3.5 mm Jack port same thing, the antennas are just cables nothing smart on that, the LCD had a one cable I believed just connecting to the mother board...I personally, only my opinion there could even be a good chance somebody could even switch a note II motherboard and force into a note I so if you want to change mother boards between note II variants I think you could be successful...but again..I could be wrong...see some note II tear downs on YouTube between note II variants..and do the judging by yourself
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unlocked verizon LTE galaxy s3 sch-i535 on T-Mobile

I have been rooted unlocked for a while now on T-Mobile But the phone is having issues with data, calls, and generally not stable. I have 4.0.4 firmware baseband I535VRLHE. I want to know what Firmware and baseband are available that I can get and be able to root and unlock bootloader. for T-Mobile to be more compatible with current T-mobile. I have current CWM The VRZ build I got was from XDA contributor. I already know how to use ODIN. Please point me in the right direction If I left out any Info tell me. I need help. Thanks
You should be able to find the firmware for your model at http://sammobile.com/firmwares
You're probably experiencing issues because that device was built for a very different type of network. If I'm remembering right, that belongs to a CDMA network, while T-Mobile is a GSM one. So I kinda doubt that you'll be able to get decent performance out of it while on T-Mobile.
Give the update a try, but don't expect miracles. Maybe you'll see some improvement though.
Sent from my SGH-T999 using Tapatalk
DocHoliday77 said:
You should be able to find the firmware for your model at http://sammobile.com/firmwares
You're probably experiencing issues because that device was built for a very different type of network. If I'm remembering right, that belongs to a CDMA network, while T-Mobile is a GSM one. So I kinda doubt that you'll be able to get decent performance out of it while on T-Mobile.
Give the update a try, but don't expect miracles. Maybe you'll see some improvement though.
Sent from my SGH-T999 using Tapatalk
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I guess to simplify my quarry. I was asking which update to firmware like 4.1.1 or up will still allow me to root and unlock boot loader I know some newer firmwares won't allow root or boot loader unlock. from what I understand.
Also I want to change the radio to a newer one. The VFLHE is way to old even for CDMA. Thanks for the reply
You'll need to ask in the Verizon forums about that type of stuff. Our bootloader isn't locked, but I think yours is. The only thing I really know for certain about the I535, is that it's different enough that I don't want to try to answer that myself. I think they've always had to do things a good bit different from the rest of the US S3 models.
You should probably use that forum for any of the help you need. And only flash/use things that are intended for your model. Don't use anything here unless it's been verified by other I535 users that it is safe.
You might also find others who are doing the same or similar stuff you want to do. If so they can probably help more than anyone.
If you have any questions about T-Mobiles networks and things like that, that can't be answered in Verizons forums, we would do our best to answer them here if needed. But I really think you'll find a lot more reliable information in your devices forum.
Hope that helps!
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