Just like on the Samsung Infuse 4G, ATT's radio on the SGSII restricts the band selection\alternate carrier selection when using different SIMs .... are there any radios yet that can be flashed to disable this limitation yet? Flying to Asia tomorrow so would be nice to have the ability.
As far as I knew it has nothing to do with the Carrier software (at least it doesn't with non-android phones I have. They have a manual selection menu hidden, it's just the SIM locks it down.
naturefreak85 said:
As far as I knew it has nothing to do with the Carrier software (at least it doesn't with non-android phones I have. They have a manual selection menu hidden, it's just the SIM locks it down.
Click to expand...
Click to collapse
Well if a sim locks it down that's a carrier restriction
If all you want is Sim unlock, get your Sim unlock code. ROM or modem won't make that happen.
There are a few ways to unlock your phone. Do a search.
Sent from my SAMSUNG-SGH-I777 using XDA App
foxbat121 said:
If all you want is Sim unlock, get your Sim unlock code. ROM or modem won't make that happen.
There are a few ways to unlock your phone. Do a search.
Sent from my SAMSUNG-SGH-I777 using XDA App
Click to expand...
Click to collapse
Not to be rude but there's more to it than that... I travel internationally weekly and you're correct when it comes to using country specific Sims in thosecountries bit not when it comes to using a "country x" sim in "country z" on an att phone. I went through this with infuse too and flashing Rogers radio solves the issue. Its an att imposed limitation.
Sent from my SAMSUNG-SGH-I777 using xda premium
That is because if you are using AT&T Sim, there is a built in preferred carrier list from
AT&T to keep the cost down, to At&t, not necessary to you.
IIRC, if you Sim unlock and use a local Sim, you will have the option to manually select network.
Sent from my SAMSUNG-SGH-I777 using XDA App
foxbat121 said:
That is because if you are using AT&T Sim, there is a built in preferred carrier list from
AT&T to keep the cost down, to At&t, not necessary to you.
Sent from my SAMSUNG-SGH-I777 using XDA App
Click to expand...
Click to collapse
Right and that's why I said yo don't understand because I'm not referring to att Sims. Its a function of the radio and affects any sim hence why I had to flash the Rogers radio
Sent from my SAMSUNG-SGH-I777 using xda premium
foxbat121 said:
That is because if you are using AT&T Sim, there is a built in preferred carrier list from AT&T to keep the cost down, to At&t, not necessary to you.
Click to expand...
Click to collapse
Known as a PRL (preferred roaming list) but this does not effect the ability to use a different SIM. The PRL is on the SIM not on the phone. Typically, you have the option on the device to ignore the PRL and do a manual network selection but only if the subsidy lock allows it.
bella92108 said:
Right and that's why I said yo don't understand because I'm not referring to att Sims. Its a function of the radio and affects any sim hence why I had to flash the Rogers radio
Click to expand...
Click to collapse
You should be able to remove the subsidy lock without having to change the modem firmware. As for the band selection, a modem from the international version of SGSII is probably your best bet. But do a search to see what happens when applying different modems for overseas use.
bella92108 said:
Well if a sim locks it down that's a carrier restriction
Click to expand...
Click to collapse
But that's not a carrier software and will not be resolved by flashing a different Modem software.
ianwood said:
Known as a PRL (preferred roaming list) but this does not effect the ability to use a different SIM. The PRL is on the SIM not on the phone. Typically, you have the option on the device to ignore the PRL and do a manual network selection but only if the subsidy lock allows it.
You should be able to remove the subsidy lock without having to change the modem firmware. As for the band selection, a modem from the international version of SGSII is probably your best bet. But do a search to see what happens when applying different modems for overseas use.
Click to expand...
Click to collapse
Yeah, that's the issue is I need to be able to select a carrier. The phone is sim unlocked, but it's preferring a different carrier than I need to be using. Any way to free myself from being able to get the international version? Won't the International version not have the appropriate "4G" AT&T frequency\technology?
Thanks!
As a side note, I'm in Bangkok at the moment. I just grabbed a dtac one day sim (cause using local sims work, it's just when using foreign roaming sims i have the att issue selecting a carrier manually), and whatever category of HSPA+ they're using is rockin no a mofo... I'm getting 11mbps down and 2.44mbps upload. Now THAT seems more like "4G" than anything we have back home in the US, hehe.
naturefreak85 said:
But that's not a carrier software and will not be resolved by flashing a different Modem software.
Click to expand...
Click to collapse
Not true, on the Infuse and this phone, it's ATT's radio that prevents manual selection of networks. If you take an infuse, and unlock, then try to manually select a network operator, the menu is grayed out. If you then flash the rogers radio, wa=lahh... the network selection is available.
Yea, this restriction has nothing to do with the SIM. It's the AT&T-customized radio that's in our phones. The AT&T Android also removes the 3g/2g toggle, but that has nothing to do with the radio, and is a simple Android tweak.
I think we're gonna have to wait and see if an I9100 modem will work with our GS2s and if it will support both 850 Mhz and 1900 Mhz WCDMA...
Shammyh said:
Yea, this restriction has nothing to do with the SIM. It's the AT&T-customized radio that's in our phones. The AT&T Android also removes the 3g/2g toggle, but that has nothing to do with the radio, and is a simple Android tweak.
I think we're gonna have to wait and see if an I9100 modem will work with our GS2s and if it will support both 850 Mhz and 1900 Mhz WCDMA...
Click to expand...
Click to collapse
Yeah. I'm finding that it's not a huge deal anyhow w\ Google Voice. More and more while travelling I want to use my phone for internet, and thats never cost effective for using a global roaming sim like Tru anyhow. Here DTAC, the biggest carrier just turned on "4G" (funny enough they call it 4G+ haha), and I'm getting 10mbps+ down and 2.5mbps+ upload. It's crazy-fast compared to my ATT at home. And for 30 Thai Baht per 24 hours it's unlimited data and unlimited local calls. Can't beat that. Here until Friday, so for $5 I have a week of amazingly fast internet.
Question for you. Does the International unlocked version have the ability to use the same HSPA+ frequencies and work fine on ATT? I like that idea if it does, seems a lot more people developing for it. But I'm not sure I can give up having 4 capacitive touch keys having had them for 2 phones now, hehe. A physical button just looks so old-fashioned, hehe.
Thanks!
bella92108 said:
Question for you. Does the International unlocked version have the ability to use the same HSPA+ frequencies and work fine on ATT? I like that idea if it does, seems a lot more people developing for it. But I'm not sure I can give up having 4 capacitive touch keys having had them for 2 phones now, hehe. A physical button just looks so old-fashioned, hehe.
Thanks!
Click to expand...
Click to collapse
International version of GS2 has quad-band HSPA+ radio (supports all AT&T bands w/o problems) while AT&T GS2 has only tri-band HSPA+. If you travel a lot internationally and want local 3G/4G data speed, international vesion is a better choice.
foxbat121 said:
International version of GS2 has quad-band HSPA+ radio (supports all AT&T bands w/o problems) while AT&T GS2 has only tri-band HSPA+. If you travel a lot internationally and want local 3G/4G data speed, international vesion is a better choice.
Click to expand...
Click to collapse
That seems like it'd solve my issues. Just wish it had the 4 capacitive buttons not the silly big button.
Sent from my SAMSUNG-SGH-I777 using xda premium
foxbat121 said:
International version of GS2 has quad-band HSPA+ radio (supports all AT&T bands w/o problems) while AT&T GS2 has only tri-band HSPA+. If you travel a lot internationally and want local 3G/4G data speed, international vesion is a better choice.
Click to expand...
Click to collapse
Any idea what the best going price on these is? I'll look at the market here in BKK
Sent from my SAMSUNG-SGH-I777 using xda premium
foxbat121 said:
International version of GS2 has quad-band HSPA+ radio (supports all AT&T bands w/o problems) while AT&T GS2 has only tri-band HSPA+. If you travel a lot internationally and want local 3G/4G data speed, international vesion is a better choice.
Click to expand...
Click to collapse
That may not be the case.
The Captivate had a published "tri-band UMTS radio w/ 850/1900/2100" support, but in reality the radio supported 850/900/1900/2100. Suspect it's the same case with the SGH-i777. Further, the potentially missing UMTS/WCDMA band (900 MHz) is used in very few places, and almost no where exclusively.
But back on topic:
When I have some more time and feel like mucking around, I might run through a bunch of different i9100 modems and see what happens.
Shammyh said:
That may not be the case.
The Captivate had a published "tri-band UMTS radio w/ 850/1900/2100" support, but in reality the radio supported 850/900/1900/2100. Suspect it's the same case with the SGH-i777. Further, the potentially missing UMTS/WCDMA band (900 MHz) is used in very few places, and almost no where exclusively.
But back on topic:
When I have some more time and feel like mucking around, I might run through a bunch of different i9100 modems and see what happens.
Click to expand...
Click to collapse
Hmmm. If the phones were physically identical I'd have done the i9100 in a heartbeat. For me the radio issue is annoying .
Sent from my SAMSUNG-SGH-I777 using xda premium
bella92108 said:
Any idea what the best going price on these is? I'll look at the market here in BKK
Sent from my SAMSUNG-SGH-I777 using xda premium
Click to expand...
Click to collapse
In US, i9100 is around $550 to $600 but none of them come with any US warranty, only international warranty which ironically excludes US.
Shammyh said:
That may not be the case.
The Captivate had a published "tri-band UMTS radio w/ 850/1900/2100" support, but in reality the radio supported 850/900/1900/2100. Suspect it's the same case with the SGH-i777. Further, the potentially missing UMTS/WCDMA band (900 MHz) is used in very few places, and almost no where exclusively.
But back on topic:
When I have some more time and feel like mucking around, I might run through a bunch of different i9100 modems and see what happens.
Click to expand...
Click to collapse
This same thing is true with the i777. And turning on the 900MHz band is done with the same method. Not sure if it will stick though.
Related
I'm leaving for hong kong in a month and I plan to call tmobile to get an unlock code for my phone. I was wondering if our phones would worth there if I picked up a sim card? Would out work with their cell frequency?
Sent from my SGH-T959 using XDA App
I've an unlocked Vibrant and it works just fine here in Jordan, as it did with many countries' sim cards I used when traveling on this phone. So I suppose you wouldn't have a problem.
I'm going to china also. (have a US vibrant)
But what I'm concerned about is :
NOTE: I plan to live in Guangzhou , China.
1) The ability to make phone calls
2) data plans work there? If not, how can I check?
3) So wifi should work (Be universally compatible)?
4) Any other issues? or potential issues?
Jhnboy said:
I'm going to china also. (have a US vibrant)
But what I'm concerned about is :
NOTE: I plan to live in Guangzhou , China.
1) The ability to make phone calls
2) data plans work there? If not, how can I check?
3) So wifi should work (Be universally compatible)?
4) Any other issues? or potential issues?
Click to expand...
Click to collapse
Lol completely irrelevant but at least now I know I'm probably not the only Cantonese speaking person on the vibrant forums lol.
Sent from my SGH-T959 using XDA App
Unlock your phone and check what bands carriers use there. I would guess you will be okay.
pvspencer22 said:
Unlock your phone and check what bands carriers use there. I would guess you will be okay.
Click to expand...
Click to collapse
+1 this is correct you may need to go in and lock the band to whatever they are using over there. Also, it may be cheaper to buy a Hong Kong sim
(prepaid kind) not sure if they do that there but that is often much cheaper look on the net.....
oka1 said:
+1 this is correct you may need to go in and lock the band to whatever they are using over there. Also, it may be cheaper to buy a Hong Kong sim
(prepaid kind) not sure if they do that there but that is often much cheaper look on the net.....
Click to expand...
Click to collapse
What do you mean by checking what brands they use?
do you mean to check if china mobile service providers use Samsung galaxy s phones? But couldn't they be just using a different version of the phone with differing hardware specs ( as to mins compatible)?
Because, unless im mistaken, the vibrant is unique to America and the rest of the world uses the i9000 galaxy s ? In other words, even if thet use a Samsung smartphone in china, that doesn't guarantee my vibrant to be fully compatible there though right?
Thanks
Jhnboy said:
What do you mean by checking what brands they use?
do you mean to check if china mobile service providers use Samsung galaxy s phones? But couldn't they be just using a different version of the phone with differing hardware specs ( as to mins compatible)?
Because, unless im mistaken, the vibrant is unique to America and the rest of the world uses the i9000 galaxy s ? In other words, even if thet use a Samsung smartphone in china, that doesn't guarantee my vibrant to be fully compatible there though right?
Thanks
Click to expand...
Click to collapse
It should work on everything (calls, texts, everything).
The only problem you might have is 3G. Unless the carrier you are using has the AWS bands (1700/2100), you won't get 3G. You also need BOTH bands to get 3G, not just one.
Although, I suppose if they use AT&T like bands, you would get 3G, as long as they have 1900 support.
Longcat14 said:
It should work on everything (calls, texts, everything).
The only problem you might have is 3G. Unless the carrier you are using has the AWS bands (1700/2100), you won't get 3G. You also need BOTH bands to get 3G, not just one.
Although, I suppose if they use AT&T like bands, you would get 3G, as long as they have 1900 support.
Click to expand...
Click to collapse
Yeah i think 3g is only compatible in the north where they use 1900 band
I used a G1 in China and Honk Kong last summer with my T-mobile SIM. Cellular calls, text and GPRS data worked. I'm not sure if EDGE would work or not (probably have better luck with a local SIM) since I was trying not to use any cellular data at all. I'm pretty sure 3G would not work. I would imagine you would have a similar experience with the Vibrant since it uses the same frequencies as the G1.
So if i'm understanding everything correctly, there are TWO types of compatibilities for phones (mainly):
- Cell network for CALLING (ex: quad band )
- Data frequencies
So the vibrant is QUAD BAND right? so calls for sure will work.
For data:
Do you guys know what frequencies the providers use for data in china and whether the vibrant supports them? (what data bands the vibrant uses?)
Thanks!
Once unlocked,will the i777 be able to access data at 3G and 4G speeds on T-Mobile USA's cellular network?
monoloco1 said:
Once unlocked,will the i777 be able to access data at 3G and 4G speeds on T-Mobile USA's cellular network?
Click to expand...
Click to collapse
to put it plainly,
NO
the i777 does not support the required bands for accessing TMobile's 3g/4g network.
Had the merger gone through, possibly. But as of right now, no.
Tmobile is on 1700MHz and 2100MHZ while AT&T is on 850MHz and 1900MHz.
No, and this is the case for every AT&T device in existence to my knowledge.
In fact, the ONLY device I know of that is not sold by T-Mobile and supports their HSPA bands is the GSM Galaxy Nexus, which is one of the first (if not the first) phones to do pentaband HSPA.
Personnally I tested the Unlock Process with a T-Mobile SimCard...not sure if working properly due to a operation range described by the fellows
Entropy512 said:
No, and this is the case for every AT&T device in existence to my knowledge.
In fact, the ONLY device I know of that is not sold by T-Mobile and supports their HSPA bands is the GSM Galaxy Nexus, which is one of the first (if not the first) phones to do pentaband HSPA.
Click to expand...
Click to collapse
actually....
in even more bastardization provided by Samsung, the skyrocket can work on TMobile's 3/4G as long as you flash a TMo modem.bin to it.
jcomana said:
Personnally I tested the Unlock Process with a T-Mobile SimCard...not sure if working properly due to a operation range described by the fellows
Click to expand...
Click to collapse
You can still get 2G on T-Mo because T-Mo uses the standard 850/1900 for 2G. What OP asks is 3G/4G.
Entropy512 said:
No, and this is the case for every AT&T device in existence to my knowledge.
In fact, the ONLY device I know of that is not sold by T-Mobile and supports their HSPA bands is the GSM Galaxy Nexus, which is one of the first (if not the first) phones to do pentaband HSPA.
Click to expand...
Click to collapse
Actualy the T-Mobile version of the Samsung Galaxy SII Can work on AT&T`s 3G network. with BETTER Speeds than the AT&T version Data wise
hyelton said:
Actualy the T-Mobile version of the Samsung Galaxy SII Can work on AT&T`s 3G network. with BETTER Speeds than the AT&T version Data wise
Click to expand...
Click to collapse
How is that an exception to what I'm saying. The T-Mobile version is not a device sold by AT&T, and is, by definition, a device sold by T-Mobile.
It's always been a bit easier to get T-Mo phones to work on AT&T - a number of them support the AT&T bands. But it's never been easy (and with the possible exception of the Skyrocket, never even possible) to go the other way without losing 3G.
Entropy512 said:
How is that an exception to what I'm saying. The T-Mobile version is not a device sold by AT&T, and is, by definition, a device sold by T-Mobile.
It's always been a bit easier to get T-Mo phones to work on AT&T - a number of them support the AT&T bands. But it's never been easy (and with the possible exception of the Skyrocket, never even possible) to go the other way without losing 3G.
Click to expand...
Click to collapse
exactly. The skyrocket is the ONLY at&t phone i have seen that has this capability, and i have been hacking away on phones for a while, and i have both carriers
Pirateghost said:
to put it plainly,
NO
the i777 does not support the required bands for accessing TMobile's 3g/4g network.
Click to expand...
Click to collapse
That would be the obvious answer based on the published specs, but I found an unselected listing in the hidden modem/ band settings for WCDMA 1700 MHz (Band IV) on my i777. I don't know if it works, but it's listed. From the phone keypad on the stock version, type in *#2263# and then look under Combinations. The phone lists 7 different GSM/PCS/WCDMA frequencies and only the obvious 5 are selected.
Anyone with an unlocked i777 on Tmo want to try it out?
Sent from my SAMSUNG-SGH-I777 using xda premium
Even though there is a setting for wcdma on 1700, it doesn't seem to make a difference. Still stuck on edge.
Sent from my SAMSUNG-SGH-I777 using XDA App
desertflyer said:
Even though there is a setting for wcdma on 1700, it doesn't seem to make a difference. Still stuck on edge.
Sent from my SAMSUNG-SGH-I777 using XDA App
Click to expand...
Click to collapse
WCDMA is 2G/Edge technology. HSPA is 3G/4G technology.
maybe it will possible if we can flash a T-Mobile midem on out phone with out breaking it
jaysix79 said:
maybe it will possible if we can flash a T-Mobile midem on out phone with out breaking it
Click to expand...
Click to collapse
Unlikely. Unless the phone has the hardware support for it.
I found out after extensive research on the Nexus One, that even though the radio chip inside it supports both frequency sets (pentaband, I suppose); the power amplifiers were only connected to certain frequency outputs, depending on the carrier it was advertised for. Which means even if I flashed a T-Mobile radio, the signal wouldn't be strong enough to get outside the case of the phone, let alone to a cell tower.
Your best bet is with European phones, as I believe they use the same frequencies as T-Mobile (since they're owned by a euro company).
Someone should confirm, but I would guess that the I9100 will work on T-Mobile with 3G.
Phoenix84118 said:
Unlikely. Unless the phone has the hardware support for it.
I found out after extensive research on the Nexus One, that even though the radio chip inside it supports both frequency sets (pentaband, I suppose); the power amplifiers were only connected to certain frequency outputs, depending on the carrier it was advertised for. Which means even if I flashed a T-Mobile radio, the signal wouldn't be strong enough to get outside the case of the phone, let alone to a cell tower.
Your best bet is with European phones, as I believe they use the same frequencies as T-Mobile (since they're owned by a euro company).
Someone should confirm, but I would guess that the I9100 will work on T-Mobile with 3G.
Click to expand...
Click to collapse
No.
Tmo's AWS band its an odd ball. Only certain Canadian Carriers use the same band.
Sent from my SAMSUNG-SGH-I777 using XDA App
Red5 said:
WCDMA is 2G/Edge technology. HSPA is 3G/4G technology.
Click to expand...
Click to collapse
No, WCMDA = UMTS = pure vanilla 3G.
2G = GSM/GPRS
"2.5G" = EDGE
3G = vanilla UMTS (WCDMA)
3.5G = HSDPA
3.75G = HSPA+
3.9G (it's not really 4G) = LTE
true 4G = LTE Advanced
Most phones, even if they support advanced modulation schemes (HSPA, HSPA+) will list the band support as "UMTSxxxx or WCDMAxxxx"
I heard (it's actually confirmed, can't find the article), T-Mo has the same 3G bands as AT&T in some remote part of the USA, I think somewhere in Washington state, not sure though? The OP might want to move there
veliksam said:
I heard (it's actually confirmed, can't find the article), T-Mo has the same 3G bands as AT&T in some remote part of the USA, I think somewhere in Washington state, not sure though? The OP might want to move there
Click to expand...
Click to collapse
That might explain why the Vibrant apparently supported one (but not both) of AT&T's bands.
As I understand it, unlike the N1, the international HSPA+ Galaxy Nexus is full-blown pentaband.
Tmo has roaming agreement with at&t. So it is possible in places there is no tmo tower, your tmo phone could roam to at&t tower without showing the roaming sign.
veliksam said:
I heard (it's actually confirmed, can't find the article), T-Mo has the same 3G bands as AT&T in some remote part of the USA, I think somewhere in Washington state, not sure though? The OP might want to move there
Click to expand...
Click to collapse
Sent from my SAMSUNG-SGH-I777 using XDA App
Do these two phones have identical hardware but different firmware, so that flashing for example the CM9 mod would make them identical, or do their hardware differs from each other, considering different band support and lack of LTE on T-Mobile?
Thank you.
For the most part hardware seems yo be same... you may have to switch the modems though. Expect a common Cm9 base and then a zip flash for each service provider.
Sent from my GT-I9300 using Tapatalk 2
Hopefully there will be some good collaboration between the ATT/Tmo (and possibly some parts from Sprint/Verizon) devs since the hardware is so similar.
It opens up the possibilities for a lot more ROMs!
Actually my question was more about the possibility to use the devices across the networks using custom mods (e.g. to use the I747 on the T-Mobile network).
Thank you.
mikhailmv said:
Actually my question was more about the possibility to use the devices across the networks using custom mods (e.g. to use the I747 on the T-Mobile network).
Thank you.
Click to expand...
Click to collapse
You can do this without mods but you won't have access to the 3g band on TMo just like TMo won't have access to the LTE 4g ATT Band...flashing a diff modem/radio won't give you the missing bands unless the hardware actually supports them and its just locked out...which currently isnt known.
djkinetic said:
You can do this without mods but you won't have access to the 3g band on TMo just like TMo won't have access to the LTE 4g ATT Band...flashing a diff modem/radio won't give you the missing bands unless the hardware actually supports them and its just locked out...which currently isnt known.
Click to expand...
Click to collapse
That is what my question was about. So the answer is unknown.
Thank you.
mikhailmv said:
That is what my question was about. So the answer is unknown.
Thank you.
Click to expand...
Click to collapse
It's a very valid question… the AT&T Galaxy S III is $550 out of contract; the T-Mobile version, $630.
If you're paying out of pocket, $80 less for what amounts to the same device (arguably, the AT&T one is better since it has an LTE radio) is nothing to sneeze at.
I am having the same question as well.
The situation here is the same to what I have as Rogers/Bell/Telus vs Wind/Mobilicity
I'd like the flexibility to use the phone across the network since the new carriers charge way cheaper than the big 3....
I suppose the hardware between the two model are identical. All support the same band 850 900 1700 2100 (AWS/LTE). Only the AWS version has the LTE radio disabled and HSPA 42 enabled???
It should work, the phone is locked to att thou. You will have to have it unlocked. But the skyrocket and the hercules were interchangeable between networks. But the international will not work on lte or Hspa.
Sent from my SGH-T989 using xda premium
Micronads said:
It should work, the phone is locked to att thou. You will have to have it unlocked. But the skyrocket and the hercules were interchangeable between networks. But the international will not work on lte or Hspa.
Sent from my SGH-T989 using xda premium
Click to expand...
Click to collapse
So you are saying that that radio modules of these two phones are identical. Meaning that T989 supports LTE, and I747 supports the 1700 band (they just have to be unlocked).
I'm gettin mine unlocked and using it on straight talk t mobile. I need to get that hspa 42 workin. It's just software. From what I gather, once t mobile rolls out their LTE they may just release a firmware update enabling LTE on the t mobile galaxy sIII's. This phone is a seven band monster world phone. To such an extent that carriers are turning features off.
---------- Post added at 09:46 PM ---------- Previous post was at 09:43 PM ----------
mikhailmv said:
So you are saying that that radio modules of these two phones are identical. Meaning that T989 supports LTE, and I747 supports the 1700 band (they just have to be unlocked).
Click to expand...
Click to collapse
All the radio modules on this phone are integrated in the S4 processor. And the processor is identical. One would have to conclude, that yes, that is the case.
From a strictly electrical background the modem is software running on transistors which can handle being pushed to the frequencies T-mobile requires, so I would think that it would be doable with the right software. When a transistor has the ability to handle the current and frequency the rest would be a matter of software, I assume.
As for LTE I have no knowledge as to the hardware or if there its something missing in non LTEs.
noahattic said:
I am having the same question as well.
The situation here is the same to what I have as Rogers/Bell/Telus vs Wind/Mobilicity
I'd like the flexibility to use the phone across the network since the new carriers charge way cheaper than the big 3....
I suppose the hardware between the two model are identical. All support the same band 850 900 1700 2100 (AWS/LTE). Only the AWS version has the LTE radio disabled and HSPA 42 enabled???
Click to expand...
Click to collapse
I have unlocked (Sim Unlocked) my SGSIII I747 from Bell and it works with Rogers and all... however i do not have a micro sim from Wind or Mobilcity to test it... however i wiill go to a few stores to test it out... if it works... which i assume it should.... but there are so many factors that it might not....
However, if someone like tomin.... i cant rememebr his id can provide an interchangable flashable modem for the two phones i747 could be used on aws 1700 using the radio from t999.
See the chart on Wikipedia
Samsung Galaxy S III Model variants
I've looked at the specs sheet from samsung.com and it's the same thing.
Weve been arguing in the other thread about how t999 has msm8260 instead of a msm8960Sent from my cm_tenderloin using Tapatalk 2
Unlocked as in correect combination of software loaded on the phone to correspond with the carrier, not simply unlocking the phone. More like unleashing its potential.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
It is interesting as its normally a possibility with Galaxy devices. This is a bit different since they have used slightly different models. We won't know until we get flashable radios and someone is brave enough to try to flash it on their device. I know with the Skyrocket I was able to flash a T-Mobile radio and get a 3G signal on wind (same type of network but in canada). The only limit was that you couldn't take a t-mobile version, flash at&t's radio and get LTE.
y2whisper said:
It is interesting as its normally a possibility with Galaxy devices. This is a bit different since they have used slightly different models. We won't know until we get flashable radios and someone is brave enough to try to flash it on their device. I know with the Skyrocket I was able to flash a T-Mobile radio and get a 3G signal on wind (same type of network but in canada). The only limit was that you couldn't take a t-mobile version, flash at&t's radio and get LTE.
Click to expand...
Click to collapse
It would be great if we ca use the same technique to make i747 work with Wind & Mobilcity and make it just like T999
Any Luck>>>
it's good finally there's not that big of a difference in hardware and looks vs the Galaxy s2. too many variants makes it difficult to buy any accessories
Long story short, I rooted using the Exynos Abuse and flashed the SuperNexus I777 ROM and am only getting EDGE.
My friend gave me his ATT Galaxy S2 SGH-1777. I have a local carrier that also uses GSM. So I have a non-ATT SIM card.
When I plugged in the SIM card to this ATT SGS2, only the texting and dialing worked. I didn't get any data. I talked to ATT for an unlock code (which they gave me). It wasn't until after I got the unlock code that I found out the phone was already GSM unlocked.
So I proceeded to root and flash the ROM I listed above. I am only getting EDGE data. Wifi works and as far as I know (with the minimal poking around) everything else does so far.
Am I missing something in terms of toggle switches inside the settings menu to turn on EDGE? Is this carrier specific? I don't see why EDGE would work but 3G wouldn't if I am in the coverage area.
I am doing this for a friend. I am a HTC Thunderbolt user so the SGS2 is new to me. What are these modems people are flashing? Should I flash one of these in hopes of picking up a 3G signal through the Non-ATT carrier?
zilla. said:
Long story short, I rooted using the Exynos Abuse and flashed the SuperNexus I777 ROM and am only getting EDGE.
My friend gave me his ATT Galaxy S2 SGH-1777. I have a local carrier that also uses GSM. So I have a non-ATT SIM card.
When I plugged in the SIM card to this ATT SGS2, only the texting and dialing worked. I didn't get any data. I talked to ATT for an unlock code (which they gave me). It wasn't until after I got the unlock code that I found out the phone was already GSM unlocked.
So I proceeded to root and flash the ROM I listed above. I am only getting EDGE data. Wifi works and as far as I know (with the minimal poking around) everything else does so far.
Am I missing something in terms of toggle switches inside the settings menu to turn on EDGE? Is this carrier specific? I don't see why EDGE would work but 3G wouldn't if I am in the coverage area.
I am doing this for a friend. I am a HTC Thunderbolt user so the SGS2 is new to me. What are these modems people are flashing? Should I flash one of these in hopes of picking up a 3G signal through the Non-ATT carrier?
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Click to collapse
What carrier are u on? If u are accessing other towers besides at&t then u will pretty much get edge
Sent from my Pink Unicorn stable
brandonarev said:
What carrier are u on? If u are accessing other towers besides at&t then u will pretty much get edge
Sent from my Pink Unicorn stable
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Click to collapse
The carrier is Cincinnati Bell. Is it possible to get the phone to pick up towers specific for Bell or do I need the carrier to do this?
zilla. said:
The carrier is Cincinnati Bell. Is it possible to get the phone to pick up towers specific for Bell or do I need the carrier to do this?
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Click to collapse
I'm pretty sure Cincinnati Bell uses T-Mobile towers so all the limitations that T-Mobile had with At&t phones on its network applies here
Sent from my Nexus 7 using Tapatalk HD
Pirateghost said:
I'm pretty sure Cincinnati Bell uses T-Mobile towers so all the limitations that T-Mobile had with At&t phones on its network applies here
Sent from my Nexus 7 using Tapatalk HD
Click to expand...
Click to collapse
^^This! Confirm what network your carrier is accessing. If it's T-Mobile you're out of luck
Sent from my Pink Unicorn stable
brandonarev said:
^^This! Confirm what network your carrier is accessing. If it's T-Mobile you're out of luck
Sent from my Pink Unicorn stable
Click to expand...
Click to collapse
If the phone is GSM unlocked, should it be able to access the respective tower of the carrier that is tied to the SIM card?
If not can the radios (?) specifically select towers?
zilla. said:
If the phone is GSM unlocked, should it be able to access the respective tower of the carrier?
Click to expand...
Click to collapse
Not if the phone doesn't have the hardware to support those specific bands.
Sent from my Zanpakuto using Getsuga Tensho!
zilla. said:
If the phone is GSM unlocked, should it be able to access the respective tower of the carrier?
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Click to collapse
Yes. Your phone is GSM unlocked; therefore it can access the Cincinnati Bell towers. However, since those are actually T-Mobile towers, you can only use T-Mobile bands. Since T-Mobile and AT&T used different bands for 3G, and the phone's radio is designed to use AT&T's bands, you can only access the 2G bands.
EDIT: Ninja'd
mattdm said:
Yes. Your phone is GSM unlocked; therefore it can access the Cincinnati Bell towers. However, since those are actually T-Mobile towers, you can only use T-Mobile bands. Since T-Mobile and AT&T used different bands for 3G, and the phone's radio is designed to use AT&T's bands, you can only access the 2G bands.
EDIT: Ninja'd
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Click to collapse
Thank you for the insight. I will call to confirm.
some of the newer tablets have both bands built in....so then you could use both gsm bands on tmo and att.....like the new note 8....it will have more gsm and lte bands than those in the past
mokokawi said:
some of the newer tablets have both bands built in....so then you could use both gsm bands on tmo and att.....like the new note 8....it will have more gsm and lte bands than those in the past
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Click to collapse
thanks for this insightful post that has ZERO to do with the i777.....
mattdm said:
Yes. Your phone is GSM unlocked; therefore it can access the Cincinnati Bell towers. However, since those are actually T-Mobile towers, you can only use T-Mobile bands. Since T-Mobile and AT&T used different bands for 3G, and the phone's radio is designed to use AT&T's bands, you can only access the 2G bands.
EDIT: Ninja'd
Click to expand...
Click to collapse
Sorry for bringing this up again, I was looking at the specs of the SGH-I777 (ATT's SGS2) vs SGH-T989 (T-Mobile's SGS2). It looks like both of the phones use the same bands except T-Mobile is capable of one more: WCDMA 2100. Is this the band that T-Mobile transmits it's 3G over? Otherwise they look almost identical.
Attached screenshot of comparison: http://imgur.com/8OQXftD
T-Mobile utilizes AWS (1700 MHz) band. Look better and you'll see that what you marked isn't a difference, 1700 is.
Google "List of UMTS networks".
Jack_R1 said:
T-Mobile utilizes AWS (1700 MHz) band. Look better and you'll see that what you marked isn't a difference, 1700 is.
Google "List of UMTS networks".
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Click to collapse
Oh of course. I glanced over that way too fast. Thanks.
As posted here: http://forum.xda-developers.com/showthread.php?t=2188467
Do you guys think the devs will be able to enable AWS HSPA bands on the ATT / Rogers / Bell / TELUS devices?
Many of us in Canada use Roam Mobility (T-Mo MVNO) when we roam in the USA. Having access to AWS + 1900 HSPA would be great so that we're camping on 2G less often.
It is in there, the problem is unlocking it. ATT may have required an efuse based lock that cannot be changed once set at the factory.
Sent from my HTC One using xda app-developers app
Interesting thing is htc has listed data speeds for canadian version via hsdpa is up to 42mb and it's the same for t-mobile USA, only At&t has different one. This could mean, that Canadian version might be similar to T-mobile version. But, this could just mean at&t's network doesn't support speeds of 42mb on hsdpa. I'm leaning toward network limitations.. But, I'm hoping I'm wrong haha
htc fan89 said:
Interesting thing is htc has listed data speeds for canadian version via hsdpa is up to 42mb and it's the same for t-mobile USA, only At&t has different one. This could mean, that Canadian version might be similar to T-mobile version. But, this could just mean at&t's network doesn't support speeds of 42mb on hsdpa. I'm leaning toward network limitations.. But, I'm hoping I'm wrong haha
Click to expand...
Click to collapse
ATT does not support 42mbit (network limitation).
Hunt3r.j2 said:
It is in there, the problem is unlocking it. ATT may have required an efuse based lock that cannot be changed once set at the factory.
Sent from my HTC One using xda app-developers app
Click to expand...
Click to collapse
It was so easy on the S3 / Note 2 (using Qualcomm software). I'm using a Bell version of the HTC One.
WorldIRC said:
It was so easy on the S3 / Note 2 (using Qualcomm software). I'm using a Bell version of the HTC One.
Click to expand...
Click to collapse
Once I get mine I will take a look on a telus model with the Qualcomm baseband software, like I did on my note 2.
Dazog said:
Once I get mine I will take a look on a telus model with the Qualcomm baseband software, like I did on my note 2.
Click to expand...
Click to collapse
Thanks! I look forward to your findings.
WorldIRC said:
It was so easy on the S3 / Note 2 (using Qualcomm software). I'm using a Bell version of the HTC One.
Click to expand...
Click to collapse
That's great, but Samsung's lock was superficial, incredibly easy to bypass. Maybe flashing TMOUS radios will do it, but there's no guarantees and it requires S-OFF.
Hunt3r.j2 said:
That's great, but Samsung's lock was superficial, incredibly easy to bypass. Maybe flashing TMOUS radios will do it, but there's no guarantees and it requires S-OFF.
Click to expand...
Click to collapse
We know, but the hack or mod will allow us to keep the latest radio's released modded for all frequencies.
Instead of cross flashing all the time.
Dazog said:
We know, but the hack or mod will allow us to keep the latest radio's released modded for all frequencies.
Instead of cross flashing all the time.
Click to expand...
Click to collapse
Honestly I don't think this is something worth investigating until S-OFF is achieved. Then we have to figure out whether or not the lock on AWS WCDMA can be removed with software means.
The iPhone 5 had the same exact problem. For T-Mobile they released a phone with the same model number as the ATT version but with AWS WCDMA unlocked. Apple was unable to do anything for the ATT users because the lock went so low level that no software could change it, so they had to just change the software from the factory instead.
The same thing may be happening here.
Has anyone figured this out yet using the QPST method in the Qualcomm software like we do with Samsung?
WorldIRC said:
Has anyone figured this out yet using the QPST method in the Qualcomm software like we do with Samsung?
Click to expand...
Click to collapse
Is there any update on this?
I can understand them locking the AT&T version down at hardware, but no the International version.
Anyone know if I can flash the International to open up 1700 AWS?
Does anyone know if the AT&T HTC One has the 2600 Mhz 4G/LTE band?
The International model does, but not sure if after converting the AT&T one changing the MID, CID and RUU will unlock the band.