Database Users

[Q] S4 SGH-I337 or SGH-I337m? AT&T or Rogers?

Sorry moderators, put this in the wrong section last time! Feel free to delete previous post!
I spend 50% of my time in the US and 50% of my time in Canada and have a contract with both AT&T and with Rogers.
I am going to buy the S4 soon. Should I get the SGH-I337 variant with AT&T or the SGH-I337m variant with Rogers?
In about 14 months, I will be back in Canada (on Rogers) permanently. So far, I am leaning towards the AT&T variant due to greater rom availability, but I am worried about whether the S4 will work on Rogers 3G bands and LTE network.
The reason I am worried is that I am currently using an unlocked Sprint BB Tour 9630 Quadband on Rogers with specs:
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 2100
CDMA/EVDO Rev A 800/1900
And the Roger's EDGE network barely functions on that phone (many disconnects).
I am a little unfamiliar with network bands, but can you let me know if the phone's 3G radio and LTE radio are identical across Rogers and AT&T?
I read somewhere that Rogers S4 uses 2600 MHz LTE Band and AT&T uses 700 MHz LTE. Is this true? Or does this phone have both LTE bands built in?
Thank you!

After a quick search, I believe both phones should have identical network capabilities.
So you should be able to get LTE and 4G access on either of the networks using either of the phone variants.
The 'M' after the model number is definitely a Canadian carrier thing and it makes no difference. I have a Galaxy S2 from Virgin/Bell which was sold in Canada as GT-i9100M but it was identical to the international GT-i9100. So much so, that I was able to flash the ROM for the international GT-i9100 on my phone without any modifications or complications.
Hope it helps! Or a more senior member can chime in and correct me!

i would recommend going with the rogers i337m. the only reason that there is more roms for at&t version is that there is a stronger demand for them. but any roms meant for i337 will also work on i337m.

Buddyjohn said:
i would recommend going with the rogers i337m. the only reason that there is more roms for at&t version is that there is a stronger demand for them. but any roms meant for i337 will also work on i337m.
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Why would you choose the Rogers version?

if you were thinking about getting the s4 soon i would go with att variant like you said because of the rom availability, but if you were going to wait, let say a few weeks to a month i would just get the i337m because samsung will probably push another update to ruin djrbliss work to unlock the bootloader. just keep checking back to see if any update gets pushed through and youll be good

vRoman Godv said:
if you were thinking about getting the s4 soon i would go with att variant like you said because of the rom availability, but if you were going to wait, let say a few weeks to a month i would just get the i337m because samsung will probably push another update to ruin djrbliss work to unlock the bootloader. just keep checking back to see if any update gets pushed through and youll be good
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Click to collapse
Ah, the Rogers bootloader is unlocked, but AT&T is locked, correct?

golden_35 said:
Why would you choose the Rogers version?
Click to expand...
Click to collapse
Unlocked boot loader.
Sent from my SGH-I337M using xda app-developers app

Hmmmmm. Thank you all! I may just end up getting the 32gb model from AT&T, since I know the AT&T model has the same radio bands built in for 3G and LTE. I'll just hope for an unlocked bootloader!

golden_35 said:
Hmmmmm. Thank you all! I may just end up getting the 32gb model from AT&T, since I know the AT&T model has the same radio bands built in for 3G and LTE. I'll just hope for an unlocked bootloader!
Click to expand...
Click to collapse
AT&T has a locked bootloader, but you can get it in 32GB. However there are works underway to get around the locks.
Rogers has an unlocked bootloader but only comes in 16GB. Unfortunately there are no ways that I know of to get around the lack of internal space and JB does not let you install apps on external SDcards.

Perfect. I'm going to trade my Blackberry Q10 for the AT&T S4 32gb.
Thanks!

Rogers Galaxy S4/ Note 3 unlocked for Wind vs Wind versions

Hi, I am aware that Rogers' i337M (Galaxy S4) can be unlocked to work with Wind or Mobilicity, and unlocked Rogers Galaxy Note 3 can work with Wind or Mobilicity as well.
Now my question is, do they have same internal hardwares? e.g. CPU/GPS chip etc.
The reason for me to ask is, I need to decide whether to purchase the S4 or Note 3 from Wind. If the hardware is different, then I better buy Rogers version and unlock it, because Rogers or big 3 versions has larger community supports so I can get more custom ROMs 2 years down the road.
Thoughts?

brisk5181 said:
Hi, I am aware that Rogers' i337M (Galaxy S4) can be unlocked to work with Wind or Mobilicity, and unlocked Rogers Galaxy Note 3 can work with Wind or Mobilicity as well.
Now my question is, do they have same internal hardwares? e.g. CPU/GPS chip etc.
The reason for me to ask is, I need to decide whether to purchase the S4 or Note 3 from Wind. If the hardware is different, then I better buy Rogers version and unlock it, because Rogers or big 3 versions has larger community supports so I can get more custom ROMs 2 years down the road.
Thoughts?
Click to expand...
Click to collapse
I would first check to be 100% certain that the LTE bands are 100% compatible. Actually the 2G/3G bands too

Best version of Note 4, 910T/910F/910C?

I currently have a LG G4 verizon edition. I am jumping to ATT so I need a new phone. I looked at the G5s but not much changed or is different than my current g4. I would jump to G4 gsm version but the boot loop issue is not something I want to risk. I need the phone to last a couple years. Note 4 seems comparable to G4.
Things I care about:
- Removeable battery
- SD Card
- IR blaster
- OIS
- unlocked bootloader for root access
- support both ATT and Tmobile bands
Note 4 seems to check all these off. I been reading about the 910T (snapdragon tmobile version) and they seem to be able to unlock the bootloader and still support att bands. I know att and verizon tend to lock their phones down too tightly. Should I consider an international version (exynos), if so which version that supports both att and tmobile bands?
Does the exynos or snapdragon tend to have better unlocked bootloader/root support? I will probably just run a debloated stock firmware since I want s-pen support/etc.
Get the 910C (international exynos), 910T (tmobile snapdragon), or 910F (international snapdragon)?
Thanks

I have straight talk att service with my unlocked N910T and I wouldn't trade it for anything. I bought it specifically for the frredom that N910T offers just to unlock root and use with ST. The bootloaders are factory unlocked "for the most part". Meaning very open to to root and custom roms....but if you get one that has been updated to the latest 5.1.1 firmware (DOK2) you can't downgrade....at least as of right now...I did a lot of research on your question for myself and haven't regretted my decision not once since I bought it in january. But the question about exynos vs snapdragon is something that depends on the user...depends on what country you will use or whether it's just gonna be a phone to d OK root things to or if you plan on heavy gaming.....things like that
---------- Post added at 04:39 AM ---------- Previous post was at 04:33 AM ----------
So bottom line bud, I wouldn't go with anything else!!

I have the 910C & it's been great on AT&T Straight Talk. 910C got Marshmallow before the 910F did, which was great. Being an international model, there is no carrier bloatware, which is another plus.
Sent from my SM-G935P using Tapatalk

J0eggernaut said:
I currently have a LG G4 verizon edition. I am jumping to ATT so I need a new phone. I looked at the G5s but not much changed or is different than my current g4. I would jump to G4 gsm version but the boot loop issue is not something I want to risk. I need the phone to last a couple years. Note 4 seems comparable to G4.
Things I care about:
- Removeable battery
- SD Card
- IR blaster
- OIS
- unlocked bootloader for root access
- support both ATT and Tmobile bands
Note 4 seems to check all these off. I been reading about the 910T (snapdragon tmobile version) and they seem to be able to unlock the bootloader and still support att bands. I know att and verizon tend to lock their phones down too tightly. Should I consider an international version (exynos), if so which version that supports both att and tmobile bands?
Does the exynos or snapdragon tend to have better unlocked bootloader/root support? I will probably just run a debloated stock firmware since I want s-pen support/etc.
Get the 910C (international exynos), 910T (tmobile snapdragon), or 910F (international snapdragon)?
Thanks
Click to expand...
Click to collapse
Exynos might suit you better since SP has some lagging issues after 10min of doing graphical work like gaming , but most devs support SP and not exynos so it depends on you , personally im more into flashing stuff and ask myself everyday "why did i buy exynos ??" , if you really love Exy you might want to take a look at the 3g model (N910H) if the battery life matters to you , GoodLuck

Thank you the feedback. Are any of the phones running on MM 6.0 able to be rooted/ have an unlocked bootloader? I feel like there is a good chance that if I buy a used phone it will be on the latest OTA. Does that mean the 910T is out of the question?
Do the 910C and 910F come with unlocked bootloaders? I don't really game. The 910C and 910F seem to be about $100 more than the 910T. I don't really have a preference for SP or Exy, just as long as I can unlock the bootloader and de-bloat and it will work on ATT/T-mobile.

J0eggernaut said:
Thank you the feedback. Are any of the phones running on MM 6.0 able to be rooted/ have an unlocked bootloader? I feel like there is a good chance that if I buy a used phone it will be on the latest OTA. Does that mean the 910T is out of the question?
Do the 910C and 910F come with unlocked bootloaders? I don't really game. The 910C and 910F seem to be about $100 more than the 910T. I don't really have a preference for SP or Exy, just as long as I can unlock the bootloader and de-bloat and it will work on ATT/T-mobile.
Click to expand...
Click to collapse
Bootloader is unlocked(and locked )
Unlocked- You can flash same or newer ROM,recovery,etc etc
Locked- You cant downgrade to previous ROM(if u upgrade to last ROM you cant go back-except 6.0.1 it allow rollback to 5.1.1)
Ps : both N910c & N910F you can root without problems (even on 6.0.1)

Jovan1997 said:
Bootloader is unlocked(and locked )
Unlocked- You can flash same or newer ROM,recovery,etc etc
Locked- You cant downgrade to previous ROM(if u upgrade to last ROM you cant go back-except 6.0.1 it allow rollback to 5.1.1)
Ps : both N910c & N910F you can root without problems (even on 6.0.1)
Click to expand...
Click to collapse
So once you go to MM 6.01 you cant downgrade to lollipop? I am fine with that. I can still flash roms/recovery/root on MM though right?

Seeing as you live state side and want to switch to AT&T. You are better off getting a Note 4 from AT&T as that way you will be sure to get full access to their LTE/4G bands without any problems. While getting either any of the international variants may not be able to support the use of AT&T's LTE/4G bands.

DarkGuyver said:
Seeing as you live state side and want to switch to AT&T. You are better off getting a Note 4 from AT&T as that way you will be sure to get full access to their LTE/4G bands without any problems. While getting either any of the international variants may not be able to support the use of AT&T's LTE/4G bands.
Click to expand...
Click to collapse
I checked the bands all the phones mentioned support ATT. ATT/Verizon phones tend to be locked down.

I think I am going with the 910T given that it supports band 12 (ac) which ATT now supports. Phones that support band 17 bc dont support band 12a. I am mostly in the states so I like the freedom to jump between tmobile or att and 910C doesn't support band 12 which is primarily used by tmobile.
If someone else stumbles across the thread maybe this will help:
910T (tmobile snap) lte bands: 2/3/4/5/8/12ac/17bc
910C (international exy) lte bands: 1/2/3/4/5/7/8/17bc/20
910F (international snap) lte bands: 1/2/3/4/5/7/8/17bc/20
910A (att snap) lte bands: 2/4/5/7/12ac/17bc
edit: corrected

J0eggernaut said:
I think I am going with the 910T or 910F given that it supports band 12 (ac) which ATT now supports. Phones that support band 17 bc dont support band 12a. I am mostly in the states so I like the freedom to jump between tmobile or att and 910C doesn't support band 12 which is primarily used by tmobile.
If someone else stumbles across the thread maybe this will help:
910T (tmobile snap) lte bands: 2/3/4/5/8/12ac/17bc
910C (international snap) lte bands: 1/2/3/4/5/7/8/17bc/20
910F (international exy) lte bands: 1/2/3/4/5/7/8/12ac/17bc/18/19/20/26
910A (att snap) lte bands: 2/4/5/7/12ac/17bc
Click to expand...
Click to collapse
Actually both the N910C and N910F support the use of the same LTE/4G Bands as they are both designed for the same international markets. However the N910C is the equipped with the Exynos 5433 while the N910F is equipped with the Snapdragon 805.

DarkGuyver said:
Actually both the N910C and N910F support the use of the same LTE/4G Bands as they are both designed for the same international markets. However the N910C is the equipped with the Exynos 5433 while the N910F is equipped with the Snapdragon 805.
Click to expand...
Click to collapse
Yep, I mixed up the C and F snapdragon vs exynos, my original post had it correct. I guess they do have the same bands, both missing band 12.

Mobo
Can a 910f board fit in a 910t frame and lcd? What boards can fit in a 910t? Tyvm

Snapdragon chipset has 4-core 2.7 GHz chipset, Exynos chipset has 4x1.9 GHz and 4x1.3 GHz 8-core hybrid chipset. Thus, benchmark results and performance are sided to Exynos. However, Snapdragon chipset has Cat. 6 LTE modem, Exynos has only Cat. 4. Thus in theory, Snapdragon allows to speed of 300 MBit/s, Exynos allows to only 150 MB/s. Major pluses and minors are these.

Curioususer1 said:
Snapdragon chipset has 4-core 2.7 GHz chipset, Exynos chipset has 4x1.9 GHz and 4x1.3 GHz 8-core hybrid chipset. Thus, benchmark results and performance are sided to Exynos. However, Snapdragon chipset has Cat. 6 LTE modem, Exynos has only Cat. 4. Thus in theory, Snapdragon allows to speed of 300 MBit/s, Exynos allows to only 150 MB/s. Major pluses and minors are these.
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Please read my post above yours. Thanks

jerryspring said:
Please read my post above yours. Thanks
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All Note 4 versions use same frame and LCD. I don't have full knowledge of deep details of frame,LCD or board change but it should work I say.

Using a G950F on ATT

I've had ATT-variant phones up until now. All the way from a Nokia E71x, to an S2, to the S5 I have now. The S2 had the unlocked bootloader so I was able to load CM on it. S5, of course, has a locked bootloader, so I'm stuck on 5.0 unless I wanted to lose root. Since I've heard that all ATT phones will have locked bootloaders now, I'm going with an international version of the S8. I just want to make sure it'll work on ATT. So, has anyone used a G950F on ATT yet?

It should work fine. You will lose features but most probably don't use the features anyway like number sync if you have a gear S2 or 3 and wifi calling to name 2 things that won't work for sure.

I don't have a wearable. Wifi calling would be nice but it doesn't work very well on the S5 I have now.

If you are in an urban area the F model does not have ATT supplement frequency 2300 or 3000 I think and maybe 1 3G frequency.

dc5dd said:
If you are in an urban area the F model does not have ATT supplement frequency 2300 or 3000 I think and maybe 1 3G frequency.
Click to expand...
Click to collapse
I'm hearing that apparently I won't have LTE at all.

definitive FACTS on all s8 variants

I bought a Verizon SM-G950UZKAVZW direct from Samsung. I thought that I was buying a phone that I could take to any carrier. I'm hearing that might not be true. Does anyone have definitive, confirmed specs ie supported radio bands on all of the carrier variants as well as the upcoming intl version? Also I heard other reports that the hardware is identical and it's firmware that is limiting the phones. Not sure if that is true either. Samsung was absolutely not helpful.
Bottom line I need to know:
1 if I keep the SM-G950UZKAVZW, will I be able to use it with other carrier networks?
2 if I can use the SM-G950UZKAVZW with other carriers, what actions (if any) would I need to take to do that? (Other than swapping a sim card)
3 would the phone I currently possess be limited in any way if I were to use it with other carriers? (Limited is defined here as "performing differently in contrast to that carriers native S8 model variant") if so, specifically how would it be limited?
4 if I were to purchase an unlocked international model once it becomes available, would that phone be limited in any way when used on any US carrier? (Limited is again defined here as "performing differently in contrast to that carriers native S8 model variant") if so, specifically how?
If you aren't sure, please don't reply. There's plenty of people documenting their best guess already. I'm looking for the straight story.
Thanks for reading!

All of Verizon phones are Sim card unlocked and since there is really only 1 version of the S8/S8+ in the US (with different model #'s corresponding to the different carriers) using the phone on another carriers network is not going to be an issue. All you need to do is insert the sim card in.
http://www.gottabemobile.com/how-to-unlock-the-galaxy-s8/
As a quick note, if you have a Verizon Galaxy S8 congratulations. Your phone is already unlocked. Verizon Wireless no longer locks phones, regardless of what you might hear from friends or family. Simply drop a T-Mobile or AT&T SIM card in a Verizon model and it works. It may require manually configuring the APN settings though, so keep that in mind.
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Click to collapse
The ONLY exception that might be would be Sprint since they are CDMA as well, but who really wants to go from Verizon to Sprint?????
All 4 Major US(and subsequent sub carriers) are receiving the same version of the phone(meaning same internals). From my understanding, inserting the carriers Sim card into the verizon phone just means you start going at that point and have access to all the carriers bands
If you got an international version, it most likely would be powered by an Exynos CPU vs the Snapdragon 835 so there would be some performance differences (typically Exynos models perform marginally better based on previous history)
If you're looking for a US unlocked model - wait until next month
http://www.theverge.com/circuitbrea...-unlocked-galaxy-s8-plus-pricing-release-date

I appreciate your clear response! Would it be accurate to say that I will have just as much freedom to hop from one carrier to another using the phone I have, as opposed to purchasing the upcoming US unlocked variant?
Also, I have heard the same thing about the hardware, that all of the carrier variants are the same physical model. But some folks, including the Samsung tech support rep I spoke to (unfortunately that probably doesn't mean a whole lot) seem to think that the carrier firmware is limiting the radio bands. Do you know this to be false?

I have the Verizon version and works fine on Tmo out of the box. Have to use Verizon update software through Windows though. OTA's will never come through.

I am using Verizon GS8 on att, it works but I only get HSPA mostly. No LTE, so band is definitely capped by firmware.
I didn't have any issue receiving ota with att sim in vzw gs8

I saw a review that said the s8 gets locked to the first carrier sim it accepts. Can someone confirm swapping sims of different carriers works?

Whanksta said:
I am using Verizon GS8 on att, it works but I only get HSPA mostly. No LTE, so band is definitely capped by firmware.
I didn't have any issue receiving ota with att sim in vzw gs8
Click to expand...
Click to collapse
Have you tried going into the network band menu and locking it to one of the AT&T LTE bands?
This still works on the S8 (found this on the S7 and used it to lock my S7 to band 4 for Tmobile)
https://forum.xda-developers.com/tm...ng-network-t3331555/post65722081#post65722081

ElBeaner said:
Have you tried going into the network band menu and locking it to one of the AT&T LTE bands?
This still works on the S8 (found this on the S7 and used it to lock my S7 to band 4 for Tmobile)
https://forum.xda-developers.com/tm...ng-network-t3331555/post65722081#post65722081
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Click to collapse
I am unable to access the service menu via the S7 method

Whanksta said:
I am unable to access the service menu via the S7 method
Click to expand...
Click to collapse
Ok forgot you were Verizon - you have to edit a setting because they block you from that access
Try this if you're daring enough
https://forum.xda-developers.com/verizon-galaxy-s6/general/enabling-using-servicemode-t3109579
EDIT Damn, looks like you have to be rooted first
---------- Post added at 12:06 PM ---------- Previous post was at 11:18 AM ----------
Whanksta said:
I am unable to access the service menu via the S7 method
Click to expand...
Click to collapse
You'll need to wait unti the official AT&T rom is available from Smasung and then you should be able to flash it via ODIN onto the phone and get all the AT&T carrier bands

mredamon said:
I bought a Verizon SM-G950UZKAVZW direct from Samsung. I thought that I was buying a phone that I could take to any carrier. I'm hearing that might not be true. Does anyone have definitive, confirmed specs ie supported radio bands on all of the carrier variants as well as the upcoming intl version? Also I heard other reports that the hardware is identical and it's firmware that is limiting the phones. Not sure if that is true either. Samsung was absolutely not helpful.
Bottom line I need to know:
4 if I were to purchase an unlocked international model once it becomes available, would that phone be limited in any way when used on any US carrier? (Limited is again defined here as "performing differently in contrast to that carriers native S8 model variant") if so, specifically how?
Click to expand...
Click to collapse
Once it becomes available? You can buy Exynos right now from other countries. Clove in UK will region unlock the phone before shipping to you in the U.S. What needs to become available?
Don't confuse the "unlocked" S8 Samsung will sell here in the U.S. in a month or so with the Exynos international variant. The "unlocked" S8 coming to the U.S. is still the bootloader locked Snapdragon version, just without carrier branding. It will be carrier unlocked but not bootloader unlocked. If you care about rooting, TWRP, ROMs, etc Exynos is what you want.
would that (Exynos international variant) phone be limited in any way when used on any US carrier?
(Limited is again defined here as "performing differently in contrast to that carriers native S8 model variant") if so, specifically how?
Click to expand...
Click to collapse
NO, except if you are on CDMA-handicapped Sprint or Verizon. If you use Sprint or Verizon be aware Exynos doesn't have 3G CDMA bands to fall back on if you can't get LTE. For AT&T or T-Mobile, YES it has all the LTE/HSPA/GSM bands.
The "international" Exynos variant can be bootloader unlocked, rooted, etc. so tons of advantages. While it has Verizon LTE bands, there's no CDMA. This means you really need Verizon VoLTE to work and I don't have the answer to that. And if you can't get LTE signal on mobile network, you won't have any signal due to no CDMA fallback. Again, only an issue because of CDMA if you stay on Verizon instead of using AT&T or T-mobile (or their network affiliates). You seem like you want to switch to another carrier? So, go ahead and do so!
EXYNOS VARIANTS LTE BANDS:
LTE Bands: FDD: B1(2100), B2(1900), B3(1800), B4(AWS), B5(850), B7(2600), B8(900), B12(700), B13(700), B17(700), B18(800), B19(800), B20(800), B25(1900), B26(800), B28(700), B32(1500), B66(AWS- 3) | TDD: B38(2600), B39(1900), B40(2300), B41(2500)
GSM/GPRS
850 / 900 / 1800 / 1900 MHz
3G/HSPA
850 / 900 / 1900 / 2100 MHz

ChazzMatt said:
Once it becomes available? You can buy Exynos right now from other countries. Clove in UK will region unlock the phone before shipping to you in the U.S. What needs to become available?
Don't confuse the "unlocked" S8 Samsung will sell here in the U.S. in a month or so with the Exynos international variant. The "unlocked" S8 coming to the U.S. is still the bootloader locked Snapdragon version, just without carrier branding. It will be carrier unlocked but not bootloader unlocked. If you care about rooting, TWRP, ROMs, etc Exynos is what you want. /QUOTE]
Yeah I screwed up. I did confuse them.
I'm not interested in all that rooting stuff I just want a phone that pretty much works anywhere I want to take it and if it's slower on one network than another I wanna know what I'm getting myself into.
Click to expand...
Click to collapse

Whanksta said:
I am using Verizon GS8 on att, it works but I only get HSPA mostly. No LTE, so band is definitely capped by firmware.
I didn't have any issue receiving ota with att sim in vzw gs8
Click to expand...
Click to collapse
Hey guys
I'm from Brazil and I wanna buy the Verizon's S8 but I'm afraid about the 4G.
I saw that this model has the Brazil LTE frequencies, but I read here that Verizon capped the band from the firmware.
Somebody knows if I could flash via ODIN the unlocked rom that will come with the unlocked version in USA and so get the LTE free to use in any place?
I don't want to assume the risk to have a top mobile phone but don't be able to use 4G.
Thank you very much guys

Hey mredamon. Did you ever get a clear response here or somewhere else about this?