[Q] Can I flash SGH-i337 modem on i9505 - Galaxy S 4 Q&A, Help & Troubleshooting

Hello guys, I bought a I9505 from Europe a while ago and I'm using it in US, the carrier is AT&T.
The signal outside is OK. but when I in the school building, it's really bad.
So I am wonder if can flash a i337 modem or maybe a I9505G(google edition) Modem to it.
If I can, will it do any help?
Thank you

Of course you cannot do that. It are totally different models.

Lennyz1988 said:
Of course you cannot do that. It are totally different models.
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Click to collapse
but according to gsmarena the hardware is the same !

GSMArena is a bad primary source.
The hardware is not the same. An I337 motherboard has a different design from that of an I9505 so they can't be swapped. The major difference between the two boards is in the LTE antenna. You can try flashing an AT&T modem if you want, but even if you do it won't magically enable LTE. The band support is coded into the LTE chip itself and cannot be changed. I would know, as I've tried it myself.

Related

Gt-i9505 = i337?

is the model number just renamed, or are there any differences? when floods of roms and development support comes out for i9505, will it be exclusively for i9505 or for I337 as well?
Sent from my GT-I9300 using xda app-developers app
soraxd said:
is the model number just renamed, or are there any differences? when floods of roms and development support comes out for i9505, will it be exclusively for i9505 or for I337 as well?
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
Yes. Just as with the SGS3 each US provider had a different phine version number. Some SMALL things would need to be changed between each providers version like the modem. But the firmware is easily ported between different providers firmwares. Just look at the SGS3's ATT/ROGERS/Bell/Telus forum. Then there are ports from other US providers in there as well. So it SHOULD be the same and probably EXPANDED since the UK and other areas will have a version based on the qualcomm processor. So MANY MANY possibilities.
Sent from my SAMSUNG-SGH-I747 using xda premium
It just doesn't have US LTE for AT&T so you get only HSDPA+ coverage.
RaptorMD said:
It just doesn't have US LTE for AT&T so you get only HSDPA+ coverage.
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Click to collapse
I believe this to be wrong. The i9505 from UK should be the same exactly harwdare wise as the ATT model 1337 which IS a i9505 and should use the SAME bands. It has always been that way. Now in all the past variations of the ATT(SGS2 SGS1) and UK (I9000 I9100) versions the modem was different if course. And had to make a change in the kernel.
NOW if your talking about the gt-i9500 then that is ONLY a 3G device and ALSO uses the same frequency bands as ATT for the 3G (huspa+).
Sent from my SAMSUNG-SGH-I747 using xda premium
I thought i9505 would cover all LTE bands. Why is ATT needing a different variant?
Sent from my GT-I9100 using xda premium
MaKTaiL said:
I thought i9505 would cover all LTE bands. Why is ATT needing a different variant?
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
Because the ATT version has physical branding (on back) and reworked software. It keeps people from confusing it with other versions. All US carriers do the same.
Sent from my HTC One X
MaKTaiL said:
I thought i9505 would cover all LTE bands. Why is ATT needing a different variant?
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
aren't there like 20 bands of LTE? not sure if LTE works differently than HSPA but till now the best phones only boasted quadband.. a jump from quad-band to vigint-band seems crazy lol
Sent from my GT-I9300 using xda app-developers app
RockRatt said:
I believe this to be wrong. The i9505 from UK should be the same exactly harwdare wise as the ATT model 1337 which IS a i9505 and should use the SAME bands. It has always been that way. Now in all the past variations of the ATT(SGS2 SGS1) and UK (I9000 I9100) versions the modem was different if course. And had to make a change in the kernel.
NOW if your talking about the gt-i9500 then that is ONLY a 3G device and ALSO uses the same frequency bands as ATT for the 3G (huspa+).
Sent from my SAMSUNG-SGH-I747 using xda premium
Click to expand...
Click to collapse
you are wrong i3 att is different than t mobile or sprint or Verizon.. tgw modem from one will brick other carriers phone.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2
lgkahn said:
you are wrong i3 att is different than t mobile or sprint or Verizon.. tgw modem from one will brick other carriers phone.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2
Click to expand...
Click to collapse
Re-read what I wrote and you quoted. I said the MODEMS are different between each providers versions and HAD TO BE REPLACED. The hardware of the ATT "SHOULD BE" the same as the Interntional UK version of the i9505.
ATT has always used the same frequency bands as the UK and much of the rest of the GSM networks world wide. TMob uses a different band and always has for data. The CDMA versions have always been a completely different beast from the ATT/INTERNATIONAL versions BECAUSE the latter use GSM(WCDMA I BELIEVE) networks and NOT CDMA like verizon and sprint.
"I am NOT saying" that you can interchange the modems from ANY of the providers. In fact when the SGS2 ATT version i777 came out I could IN FACT put the INTERNATIONAL SGS2 I9100 firmware in my phone and it would work without bricking it. Without changing anything out. But calls would not work correctly as talked about below...
BUT if you look at my ATT Modem thread http://forum.xda-developers.com/showthread.php?t=1336958 you will see that I tried the modems from the i9100 onto the i777 and could make calls but the other person on the line could NOT hear me. This is where the OTHER change comes to play and has to be mic swapped, the mic has to be swapped to use the international versions firmware on the i777 to fix the mics being swapped differently between the two devices. The ATT version I777 used the exyrnos processor as did the i9100 international SGS2. The ONLY REAL difference between the internation i9100 and i777 ATT was the ATT version had different mic locations and did NOT have the fm tuner. Other than that they were almost the exact same.
So back to the original question from the OP, I believe the i9505 International Version and the ATT I337 (A I9505 VARIANT) will be close or the same hardware wise and roms should be VERY EASILY interchangeable as was/is the case between the i9100/i777 versions. Of course the cdma versions will be totally different due to DIFFERENT hardware needed for CDMA. And TMob different due to 1 different radio frequency needed for data
Sent from my SAMSUNG-SGH-I747 using xda premium
Any one tried to odin I9505 rom to an I337
Has Anyone tried to odin the I9505 rom to an I337 or does anyone know someone who did? I would think if it worked it would unlock the I337 bootloader.
edit.. quite unofficial but using pdadb.net the LTE bands for the 2 are different
I337 : LTE700 (B17), LTE1700/2100 (B4)
I9505: LTE2100 (B1), LTE850 (B5), LTE1800 (B3), LTE2600 (B7), LTE900 (B8), LTE800 (B20)
so maybe you could Odin flash I9505 then Odin just the modem from the I337 if it's available.
Also based on RockRatt's post does anyone know if the mic's or anything else is actually different?
My s4 says under "About Device" that its model number is I337. However, doing an IMEI lookup, it says i9505. So I would assume no difference aside from the LTE bands, and some really small fine tuning under the hood..
After reading this thread, I am a little disappointed. I bought an international S4 i9505 with the intention of using it in USA. And now I am reading that the LTE bands on the i9505 and ATT version are different which means I cant use the i9505 in the US without a mod which is not guaranteed 100% ?
Has anyone tried flashing the i9505 with ATT modem with success?
jesa said:
Has Anyone tried to odin the I9505 rom to an I337 or does anyone know someone who did? I would think if it worked it would unlock the I337 bootloader.
edit.. quite unofficial but using pdadb.net the LTE bands for the 2 are different
I337 : LTE700 (B17), LTE1700/2100 (B4)
I9505: LTE2100 (B1), LTE850 (B5), LTE1800 (B3), LTE2600 (B7), LTE900 (B8), LTE800 (B20)
so maybe you could Odin flash I9505 then Odin just the modem from the I337 if it's available.
Also based on RockRatt's post does anyone know if the mic's or anything else is actually different?
Click to expand...
Click to collapse
You can't ODIN a I9505 rom on the I337 because it's bootloader is locked and only files with samsung's encryption key for the I337 will flash via ODIN. The bootloader is locked so we can't flash anything via ODIN except official AT&T firmware, and if you have the latest MF3 full update you can't flash anything other than MF3, you can't flash back to mdl or mdb after upgrading.
No way to truly unlock the bootloader at this point, Loki is just a work-around.
Because of the very different LTE bands in the Europe and the US, I think their are likely some hardware changes between the I9505 and the i337, even if it's only related to LTE chips.
The compatibility of AT&T and UK phones was true with GSM and HSPA, but now with LTE bands they are diverging, so what applies to the old S1 and S2 doesn't necessarily apply anymore.
I think it's unlikely that you'll get LTE working in the US on a I9505, might want to sell it and get a T-mobile version, that will work with AT&T LTE and the bootloader is unlocked
I'm a S4 newbie. Has anyone used the I9505 on AT&T network and if so, what are the issues? I'd like to find a phone that supports TWRP and I know the I337 doesn't
It supports SafeStrap, but that's a different issue. Anyway, the I9505 will not get LTE on any US carrier due to the device not having the US LTE frequencies. The I9505 otherwise functions as expected on AT&T. HSPA is slow compared to LTE, but not a deal breaker.
[QRCODE][/QRCODE]
Strephon Alkhalikoi said:
It supports SafeStrap, but that's a different issue. Anyway, the I9505 will not get LTE on any US carrier due to the device not having the US LTE frequencies. The I9505 otherwise functions as expected on AT&T. HSPA is slow compared to LTE, but not a deal breaker.
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Click to collapse
Thanks. When you reference SafeStrap I assume you are referring to the I337. I've already installed SafeStrap which is OK as an interim solution, but I'd rather install TWRP as my recovery software. Do you know of any S4 variants that have a) unlocked bootloader and b) are compatible with AT&T? According to this site: http://www.phonemore.com/compare/phones/ the I9505G supports the same LTE frequencies as the I337/?
Your two options are the I9505G - good luck in finding it - and the T-Mobile M919. In the case of the T-Mobile device you have to carrier unlock it to use it on AT&T.
Strephon Alkhalikoi said:
Your two options are the I9505G - good luck in finding it - and the T-Mobile M919. In the case of the T-Mobile device you have to carrier unlock it to use it on AT&T.
Click to expand...
Click to collapse
Thanks. Great info. According to this reference the M919 supports only one of the three LTE frequencies of the I337. Is that true and if so, is it significant?
http://www.phonemore.com/compare/ph...vs-samsung-galaxy-s4-sgh-i337-att-32gb/340721
Also, according to the same site, the I9505G supports all three, but as you say it's tough to find one at reasonable price. Thanks again.
That site is full of crap. The M919 supports the same exact frequencies as the I337.
Strephon Alkhalikoi said:
That site is full of crap. The M919 supports the same exact frequencies as the I337.
Click to expand...
Click to collapse
Thanks again. I appreciate the feedback. For my future reference can you refer me to a site that has accurate information?

WIND mobile (Canada) Galaxy S4 compatibility

Hello everyone,
I am really confused about different versions of Galaxy S4 and their compatibility with Wind mobile in Canada.
As far as I know, there are i9500, i9505 and i377 variants.
I was looking forward to buy the i9505 model but I'm not sure if it is compatible with Wind mobile network. (Right now I am outside of Canada for a while so getting a phone in a duty free shop makes sense.)
Does anyone know if i377 or any other variants of Galaxy S4 is compatible with Wind mobile?
If it matters, right now I have a T999V (galaxy S3) which works fine with Wind's network.
Thanks in advance
SirM2X said:
Hello everyone,
I am really confused about different versions of Galaxy S4 and their compatibility with Wind mobile in Canada.
As far as I know, there are i9500, i9505 and i377 variants.
I was looking forward to buy the i9505 model but I'm not sure if it is compatible with Wind mobile network. (Right now I am outside of Canada for a while so getting a phone in a duty free shop makes sense.)
Does anyone know if i377 or any other variants of Galaxy S4 is compatible with Wind mobile?
If it matters, right now I have a T999V (galaxy S3) which works fine with Wind's network.
Thanks in advance
Click to expand...
Click to collapse
The GT-i9500 uses the exynos octa core cpu and isn't available in North America because it doesn't support LTE here.
The GT-i9505 is the international S4 that uses the qualcomm quadcore cpu which is marketed in the USA as i377 (at&t) and i377m (bell/rogers/telus) in Canada. These 2 variants don't support AWS bands out of the box, but users have shown a way to enable that on these phones.
There is also another variant of the i9505 marketed as SGH-M919 for T-Mobile in USA and SGH-M919V for Wind/Videotron in Canada. These support AWS bands out of the box and work perfectly well on all North American providers such as At&t, Rogers, Bell, Virgin Mobile, T-Mobile, etc.
Hope this helps your dilemma!
dj_aj said:
The GT-i9500 uses the exynos octa core cpu and isn't available in North America because it doesn't support LTE here.
The GT-i9505 is the international S4 that uses the qualcomm quadcore cpu which is marketed in the USA as i377 (at&t) and i377m (bell/rogers/telus) in Canada. These 2 variants don't support AWS bands out of the box, but users have shown a way to enable that on these phones.
There is also another variant of the i9505 marketed as SGH-M919 for T-Mobile in USA and SGH-M919V for Wind/Videotron in Canada. These support AWS bands out of the box and work perfectly well on all North American providers such as At&t, Rogers, Bell, Virgin Mobile, T-Mobile, etc.
Hope this helps your dilemma!
Click to expand...
Click to collapse
Thank you for your elaboration.
In other words, if I went and bought an SGS 4 with model number i9505, it wouldn't work on -say- Wind mobile out of the box? Should I strictly go for M919? Or are they all the same i9505 hardware only different radios? This "radio": are we referring to the baseband firmware or the actual circuitry inside the phone itself?
Sorry for asking again but I'm trying to clear up the confusion.
Thank you very much in advance
SirM2X said:
Thank you for your elaboration.
In other words, if I went and bought an SGS 4 with model number i9505, it wouldn't work on -say- Wind mobile out of the box? Should I strictly go for M919? Or are they all the same i9505 hardware only different radios? This "radio": are we referring to the baseband firmware or the actual circuitry inside the phone itself?
Sorry for asking again but I'm trying to clear up the confusion.
Thank you very much in advance
Click to expand...
Click to collapse
1) All GT-i9505 variants have the same hardware which includes the radio chip, cpu, ram etc.
2) The software part (modem) that controls the radio module is different in the variants which is why some of the users were able to 'activate' AWS band support on the At&t/Rogers/Bell S4 by flashing the appropriate modem/rom.
3) I believe if you purchase the GT-i9505 it will still work on Wind Mobile and the other carriers. But keep in mind that you may or may not be able to connect to LTE or lose reception in some areas where they only run the network on a respective band.
This is where you have to do your homework. Go to Wind Mobile's website and see what bands they use & then cross reference them with the GT-i9505 supported bands.
After you do that yourself and are fairly confident that the phone should work. I'd suggest that you call up Wind mobile and ask them to ensure if that model will work on Wind completely. Just a heads up, you may not get the most knowledgeable tech on your first try...so you may have to try again.
If you just really want that model from the duty free, just get it! I'm sure one of the more advanced users here will be able to point out what needs to be tweaked for it run flawlessly on whatever network.
dj_aj said:
1) All GT-i9505 variants have the same hardware which includes the radio chip, cpu, ram etc.
2) The software part (modem) that controls the radio module is different in the variants which is why some of the users were able to 'activate' AWS band support on the At&t/Rogers/Bell S4 by flashing the appropriate modem/rom.
3) I believe if you purchase the GT-i9505 it will still work on Wind Mobile and the other carriers. But keep in mind that you may or may not be able to connect to LTE or lose reception in some areas where they only run the network on a respective band.
This is where you have to do your homework. Go to Wind Mobile's website and see what bands they use & then cross reference them with the GT-i9505 supported bands.
After you do that yourself and are fairly confident that the phone should work. I'd suggest that you call up Wind mobile and ask them to ensure if that model will work on Wind completely. Just a heads up, you may not get the most knowledgeable tech on your first try...so you may have to try again.
If you just really want that model from the duty free, just get it! I'm sure one of the more advanced users here will be able to point out what needs to be tweaked for it run flawlessly on whatever network.
Click to expand...
Click to collapse
Thank you
Now that clears everything up
bought the GT i9500
I bought the GT i9500 galaxy s4 when I was on vacation outside Canada.
Now I'm back here and cannot connect to wind network.. It always goes on roaming :crying:
Please someone let me know what to do with my phone. Can I sell it to someone using Rogers/Bell/Telus? as my friend has a rogers sim card and its working on my phone
Also would be thankful if someone could tell me what could I do to make wind work on my phone.
I had the simcard cut by the phoneseller when I bought it so I could use it when I come back here. Could that be the problem? I mean, would it work if I bought a new small sim card from Wind?
No it won't work.I
I got a phone UK from 3 network and it didn't work and after lots of research I found that it is missing the AWS mode. Mine also works with Rogers, Telus and Bell but not Wind mobile. The store just cut my cimcar for $5 and did not work.
I was reading that there is a ROM or firmware that should be updated.
good luck and let me know if you fixed it.
Samsung Galaxy S4 on Wind Mobile
Were you able to get this working on WIND Mobile? I am in the same predicament, and need to get this working but it just keeps roaming. Wonder if there is a ROM that can be flashed to support the AWS frequency for WIND.
unhappy_with_s4 said:
I bought the GT i9500 galaxy s4 when I was on vacation outside Canada.
Now I'm back here and cannot connect to wind network.. It always goes on roaming :crying:
Please someone let me know what to do with my phone. Can I sell it to someone using Rogers/Bell/Telus? as my friend has a rogers sim card and its working on my phone
Also would be thankful if someone could tell me what could I do to make wind work on my phone.
I had the simcard cut by the phoneseller when I bought it so I could use it when I come back here. Could that be the problem? I mean, would it work if I bought a new small sim card from Wind?
Click to expand...
Click to collapse
Activate AWS on i9505
Check out this link to learn how to activate AWS
http://forum.xda-developers.com/showthread.php?t=2291589

[Q] *** N9005 on ATT LTE / Rogers LTE ***

Hello,
Has anyone actually tried an N9005 on ATT LTE or Rogers LTE?
Lot's of speculation and indeed online the specs say it should not work. Hopefully there is an ATT or Rogers modem to flash soon.
Thanks,
Kevin
@Class said:
Hello,
Has anyone actually tried an N9005 on ATT LTE or Rogers LTE?
Lot's of speculation and indeed online the specs say it should not work. Hopefully there is an ATT or Rogers modem to flash soon.
Thanks,
Kevin
Click to expand...
Click to collapse
What speculation? It is missing the required bands to work on AT&T.
The hardware has support for it - so its a software restriction. But you're right it has been confirmed that the N9005 stock doesn't work on AT&T / Verizon.
Note II received AWS bands by a modified QCP file. Some people say its just a modem flash.
Yeah I'm wondering the same thing my unlocked n9005 works on Rogers lte but I was hoping there was a modem I could flash since coverage isn't great and I heard it's because of software reasons
Sent from my SM-N9005 using Tapatalk
I am using an n9005 and it works on LTE just fine. Maybe the coverage area is good where I normally use it.
The n9005 will work on Rogers LTE where there is some 2600mhz coverage.
Sent from my SM-N900 with Tapatalk
@Class said:
Note II received AWS bands by a modified QCP file. Some people say its just a modem flash.
Click to expand...
Click to collapse
Would lovee if someone would share if it could be done.
PatienceWithin said:
Would lovee if someone would share if it could be done.
Click to expand...
Click to collapse
Yeah would be a dream come true if it could be achieved on the Note 3. I wonder what's so different from Note 2 to Note 3 that it can't be done the same way?
sc2ascend said:
Yeah would be a dream come true if it could be achieved on the Note 3. I wonder what's so different from Note 2 to Note 3 that it can't be done the same way?
Click to expand...
Click to collapse
I'm waiting for something to happen on this front as well... I've had my n9005 for about 2 months on at&t and have been settling for hspa+ but it's *really* slow. if anybody has any ideas as to how to get LTE working on the n9005 i'd really like to hear about it.
cpgeek said:
I'm waiting for something to happen on this front as well... I've had my n9005 for about 2 months on at&t and have been settling for hspa+ but it's *really* slow. if anybody has any ideas as to how to get LTE working on the n9005 i'd really like to hear about it.
Click to expand...
Click to collapse
+1
I've attempted to flash the modems from N900W8 firmwares without success.
Still looking for a way to enable 4G LTE with Telus on the n9005.
Expliciate said:
+1
I've attempted to flash the modems from N900W8 firmwares without success.
Still looking for a way to enable 4G LTE with Telus on the n9005.
Click to expand...
Click to collapse
You would at least need the AWS band on your device to start thinking that enabling LTE for Telus is feasible...
Your device does not even have this band on 3G...
Sent from my SM-N900 with Tapatalk
cpgeek said:
I'm waiting for something to happen on this front as well... I've had my n9005 for about 2 months on at&t and have been settling for hspa+ but it's *really* slow. if anybody has any ideas as to how to get LTE working on the n9005 i'd really like to hear about it.
Click to expand...
Click to collapse
zadigre said:
You would at least need the AWS band on your device to start thinking that enabling LTE for Telus is feasible...
Your device does not even have this band on 3G...
Sent from my SM-N900 with Tapatalk
Click to expand...
Click to collapse
Both the n9005 and n900w8 have the same hardware. It's just primarily based on software at this point.
Expliciate said:
Both the n9005 and n900w8 have the same hardware. It's just primarily based on software at this point.
Click to expand...
Click to collapse
Same cpu / chipset does not necessarily mean same power amplifiers or same antennas
Sent from my SM-N900 with Tapatalk
zadigre said:
Same cpu / chipset does not necessarily mean same power amplifiers or same antennas
Sent from my SM-N900 with Tapatalk
Click to expand...
Click to collapse
Ah okay, gotchaa.
Finally got some LTE action in TX
Hello, I have an sm-n9005 on AT&T (go phone). Been living with HSPA since getting this phone in early April. I'm on vacation in Texas visiting relatives and on the way from Dallas to Houston I actually got 4G in two locations briefly while driving. Oddly, both of these locations were not in Houston or Dallas where one would expect them to be, rather in smaller towns. I don't care what anyone here says about modems, firmwares, etc. They HAVE the capability to serve LTE to these phones but won't. The bottom line is deregulation is killing the consumer while these clowns pretend each one has "the best" or "the most reliable" LTE service.

Rogers Galaxy S4 Mainboard Failure - Does it matter which provider I select?

Hey folks. Just got my S4 I337M back from sending it away with Rogers for repair. I was foolish and didn't think about how I flashed it previously, so it got sent back not fixed, with the paperwork claiming mainboard failure. I'm more than happy to fix this privately, but I'd like to shop around for the part myself. Problem is that the price is very inconsistent between provider brandings. Is there a difference between them at all, so long as it isn't a mini or value edition or whatever other branding? I just want to get the cheapest fix available for this thing so I can cost out the difference to just getting a new phone. Thanks for any info.
Then you are better off buying a phone with a busted screen and just replace the motherboard.
Do take into account that some providers lock the bootloaders. Also take into account that the S4 variants all not all the same, so not every motherboard might fit in perfectly.
GDReaper said:
Then you are better off buying a phone with a busted screen and just replace the motherboard.
Do take into account that some providers lock the bootloaders. Also take into account that the S4 variants all not all the same, so not every motherboard might fit in perfectly.
Click to expand...
Click to collapse
Not to be ungrateful, but this only rephrases my initial question. I'm aware that there are several variants and that there are several methods of acquiring the board, either new or from a busted phone. My question is which boards wouldn't be compatible with the I337M variant.
JavaMac said:
Not to be ungrateful, but this only rephrases my initial question. I'm aware that there are several variants and that there are several methods of acquiring the board, either new or from a busted phone. My question is which boards wouldn't be compatible with the I337M variant.
Click to expand...
Click to collapse
You are changing the whole board, not just one small part from the board. This includes the ram, processor, internal memory and such, right?
So the only incompatibility issues there may be are the frame and board sizes. Theoretically you can put any other S4 board in there (as long as you change the whole motherboard and daughter board).
But I doubt there is any way to tell which fits in what, unless you try it.
Just get one from another I337M is my suggestion. Hope this is somewhat more clearer now.
There are two options for an s4 from a Canadian carrier: sgh-i337m (Telus, Rogers, Bell) or sgh-m919 (Wind, Videotron).
For the i337m, it does not matter which carrier sold the phone as the hardware is identical and ROMs from sammobile.com for the i337m can be cross flashed among carriers. The only difference is the pre-installed apps. I have a Telus s4 (came with 4.4.2) that I flashed with Bell 5.01 firmware. Same applies to the Wind/Videotron version of the s4.
In the i337m and m919, there are connections for USB flex cable, cameras, headphone jack, LCD, and wi-fi cable. No other boards that I noticed.
If you want a motherboard with a busted screen, check out Kijiji or craigslist. Just make sure the imei has not been blacklisted, and the wifi and sim reader work.
GDReaper said:
You are changing the whole board, not just one small part from the board. This includes the ram, processor, internal memory and such, right?
So the only incompatibility issues there may be are the frame and board sizes. Theoretically you can put any other S4 board in there (as long as you change the whole motherboard and daughter board).
But I doubt there is any way to tell which fits in what, unless you try it.
Just get one from another I337M is my suggestion. Hope this is somewhat more clearer now.
Click to expand...
Click to collapse
There's plenty of ways to tell, like asking someone with a working knowledge of these devices, which is why I'm on this forum. To learn and apply. Speculation isn't useful.
audit13 said:
There are two options for an s4 from a Canadian carrier: sgh-i337m (Telus, Rogers, Bell) or sgh-m919 (Wind, Videotron).
For the i337m, it does not matter which carrier sold the phone as the hardware is identical and ROMs from sammobile.com for the i337m can be cross flashed among carriers. The only difference is the pre-installed apps. I have a Telus s4 (came with 4.4.2) that I flashed with Bell 5.01 firmware. Same applies to the Wind/Videotron version of the s4.
In the i337m and m919, there are connections for USB flex cable, cameras, headphone jack, LCD, and wi-fi cable. No other boards that I noticed.
If you want a motherboard with a busted screen, check out Kijiji or craigslist. Just make sure the imei has not been blacklisted, and the wifi and sim reader work.
Click to expand...
Click to collapse
Awesome. Thanks for the info here.

using my axon 7 US model around the world

Hey guys I've had my Axon 7 for almost 2 years now, I am planning a trip to Tokyo for just over 2 weeks at the end of August and want to be able to get a sim in Japan and use my phone as normal. Now our Axon 7 u supports 3/4 of SoftBank lte bands and 2/3 of the other bands it needs. So this option doesn't seem too bad.
Now getting closer to my question.
International or us versions of the a7 all have the snapdragon 820 which contains the modem. This same chip is available around the world including Japan. So
Does the snapdragon 820 have different versions with different modems? Or is the software the reason only certain bands are available in different versions of the phone.
If the software decides which bands are available is it possible to edit it to unlock any bands I may want when I am in Tokyo this summer?
I am on unlocked bootloader twrp etc. and have used lineage os and other ROMs right now on a stock based room rooted
Any help and knowledge is appreciated. I googled around a bit and didn't find much on the subject
Simply having a chip that supports a band is not enough, it needs antennas that are properly modulated and shielded for that frequency.
Even if you were to patch the modem to enable a certain band, you would most likely not get reception at all or cause interference on other channels
masong397 said:
Hey guys I've had my Axon 7 for almost 2 years now, I am planning a trip to Tokyo for just over 2 weeks at the end of August and want to be able to get a sim in Japan and use my phone as normal. Now our Axon 7 u supports 3/4 of SoftBank lte bands and 2/3 of the other bands it needs. So this option doesn't seem too bad.
Now getting closer to my question.
International or us versions of the a7 all have the snapdragon 820 which contains the modem. This same chip is available around the world including Japan. So
Does the snapdragon 820 have different versions with different modems? Or is the software the reason only certain bands are available in different versions of the phone.
If the software decides which bands are available is it possible to edit it to unlock any bands I may want when I am in Tokyo this summer?
I am on unlocked bootloader twrp etc. and have used lineage os and other ROMs right now on a stock based room rooted
Any help and knowledge is appreciated. I googled around a bit and didn't find much on the subject
Click to expand...
Click to collapse
I'm guessing you aren't too aquaintanced with custom ROMs and that kinda stuff for the axon 7. lemme explain.
There are 3 versions: A2017 (china), A2017G (Int'l, the one used in Japan i think), and A2017U (US). All of them have different modems.
The updates for each device all come with different NHLOS.bin files, which are the modem files. If you flash the U file on a G you won't have any signal. Sometimes you can even wipe out your IMEIs.
But why do you need LTE for a 2 week trip though? You'll get phone signal and data anyways...
Choose an username... said:
I'm guessing you aren't too aquaintanced with custom ROMs and that kinda stuff for the axon 7. lemme explain.
There are 3 versions: A2017 (china), A2017G (Int'l, the one used in Japan i think), and A2017U (US). All of them have different modems.
The updates for each device all come with different NHLOS.bin files, which are the modem files. If you flash the U file on a G you won't have any signal. Sometimes you can even wipe out your IMEIs.
But why do you need LTE for a 2 week trip though? You'll get phone signal and data anyways...
Click to expand...
Click to collapse
I know all about the different versions of the phone, I've been around here for a while. My first question was simply if the 820 has different versions with different banded modems. After reading your reply I'm still not sure. Like I said I know about the different versions of the phone and the fact that they have different modem firmware. My question was hardware related, based on another guys reply it seems not likely it's there antenna that is the deciding factor in what bands can work as far as hardware is concerned which obviously means there is no possibility of unlocking any bands
masong397 said:
I know all about the different versions of the phone, I've been around here for a while. My first question was simply if the 820 has different versions with different banded modems. After reading your reply I'm still not sure. Like I said I know about the different versions of the phone and the fact that they have different modem firmware. My question was hardware related, based on another guys reply it seems not likely it's there antenna that is the deciding factor in what bands can work as far as hardware is concerned which obviously means there is no possibility of unlocking any bands
Click to expand...
Click to collapse
What I mean is that installing different modem firmware basically makes the modem inoperable. hence, there are key differences between the models
I'm in Tokyo right now and get LTE on Docomo via band 3, which doesn't seem to be advertised anywhere. I was quite surprised! Speeds have been great!
Technically, it can work in Japan. It will get LTE in urban areas and a mix of LTE and HSPA+ elsewhere. From a practical point of view, the garbage radios in the Axon 7 are a serious problem if you're roaming. Hopping around on different bands and carriers causes the radio to constantly die, lose data, or lock onto the wrong cell tower. You'll have to cycle airplane mode frequently and you can't count on incoming calls/texts working.
I haven't had time to try LineageOS in Japan yet. It seems to have fewer radio problems so it might do OK.
Axon in Japan
Hey, I use a American Axon 7 in Japan with no issues, if you use any MVNO sim that uses NTT Docomo Network you should be fine, for example BicSim, IIJMio Travel sim etc.

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