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[Q] AT&T S4... Switch to T-mobile S4

I Have the AT&T S4... should I switch to T-mobile S4? (bootloader issues)... I want to make the move before I can no longer return my AT&T S4... any thoughts? I know the AT&T S4 would tend to have more going on in terms of roms and development, but even well known devs are saying stay away from this version... seems like they dont think it's gonna happen soon at all.

From what I read on the T-Mobile forums they are still trying to figure out if the bootloader is locked like ours
Sent from my SAMSUNG-SGH-I337 using xda premium

t2abousa said:
I Have the AT&T S4... should I switch to T-mobile S4? (bootloader issues)... I want to make the move before I can no longer return my AT&T S4... any thoughts? I know the AT&T S4 would tend to have more going on in terms of roms and development, but even well known devs are saying stay away from this version... seems like they dont think it's gonna happen soon at all.
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Click to collapse
right there with you, i've got 13 more days to return-no-questions-asked, just a little butt-hurt i already traded my lovely GS2 in :crying: should have kept that little sucker around until all this washed over. I would go over to HTC One, as it is developer-friendly, but i just can't bring myself to a non-reparable design as these USB ports at the bottom go after time, no swapable batt, and missing micro SD card (love having my pics there in case phone dies, while it's not the ultimate in security, it's at least a small form of backup). Also, the added screen real estate i think is the perfect phone size.
Really hoping the TMob version can be SIM swapped, might not make it to my return date to get confirmation on this....boo

I am thinking of going HTC one. Cant afford to wait a year for potential screw up where Samsung releases an unlock. There will be no unlock for boot loader u less Samsung or somebody working there leaks it.
Sent from my SAMSUNG-SGH-I337 using xda premium

Can anyone link me to the tmobile forum for this phone? Can't seem to find it lol

Questions go in Q&A
Thread moved

Get out while you still can
SENT FROM MY LTEVO

Apparently the t-mobile bootloader is unlocked, read the third paragraph
http://www.xda-developers.com/android/official-and-confirmed-att-galaxy-s-4-is-bootloader-locked/

crt60 said:
Apparently the t-mobile bootloader is unlocked, read the third paragraph
http://www.xda-developers.com/android/official-and-confirmed-att-galaxy-s-4-is-bootloader-locked/
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Click to collapse
Figures... now to see if I can buy the T-mobile version without having a t-mobile line. At&T and Verizon dont allow it. Anyone know if they will let you?

t2abousa said:
Figures... now to see if I can buy the T-mobile version without having a t-mobile line. At&T and Verizon dont allow it. Anyone know if they will let you?
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Click to collapse
This site claims to have the unlocked US T-Mobile S4 available for pre-order. I have no experience with them, but they are mentioned several times in the S4 forums.
http://negrielectronics.com/catalogsearch/result/?q=s4#.UYDASknD_IU
...and for $70 cheaper than the AT&T unlocked S4!

scott14719 said:
This site claims to have the unlocked US T-Mobile S4 available for pre-order. I have no experience with them, but they are mentioned several times in the S4 forums.
http://negrielectronics.com/catalogsearch/result/?q=s4#.UYDASknD_IU
...and for $70 cheaper than the AT&T unlocked S4!
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Click to collapse
Nice, thanks! My concern is that they are probably talking about sim unlock which is possible on At&T already, I wish we had someone who owns a t-mobile S4 and can confirm an unlocked or unlockable bootloader.
EDIT: Looks like according to the t-mobile forum theirs is unlocked bootloader. Im hoping we can just get the bootloader unlocked by then but if not.. plan B!

t2abousa said:
Nice, thanks! My concern is that they are probably talking about sim unlock which is possible on At&T already, I wish we had someone who owns a t-mobile S4 and can confirm an unlocked or unlockable bootloader.
EDIT: Looks like according to the t-mobile forum theirs is unlocked bootloader. Im hoping we can just get the bootloader unlocked by then but if not.. plan B!
Click to expand...
Click to collapse
Wasn't your original question about where to buy a T-Mobile S4 without having a T-Mobile line? If so, that site claims to have them. If you are planning on using the T-Mobile S4 on AT&T networks it will need to be sim unlocked. Otherwise, I'm not sure why you are looking to buy a T-Mobile S4 without having a T-Mobile line. As far as the bootloader goes, AT&T is locked, T-Mobile is not, but that has nothing to do with a T-Mobile phone on an AT&T line? Maybe I am just not understanding what you are looking for?

[Q] "Easiest" S4 to flash new ROMs?

I've been lurking around the forums for about a week now and thanks to the folks who contribute, I've been able to root, carrier unlock (tested to work with AT&T and Tmo), and side load a few ROMs on my I337 without bricking or even tripping KNOX. So again, thanks to all who contributed to those tutorials!
Unfortunately, the phone I bought came with MK2 pre-installed and since I'm a noob I wasn't aware of the limitations of this version until after reading these forums. You guys have saved me from bricking my phone though!
So my question... Do any of the other US variants of the S4 (aside from the I9505G) have similarly locked down bootloaders like the I337 (assuming latest OTA has been applied)? I'm gathering from various posts that AT&T was the only carrier implementing such nonsense. I'm asking because it seems like other models (M919, I545, and L720) sell for less on eBay and I'm considering selling my pristine I337 for another model. I want to make sure I don't end up with similar restrictions if I make such a move.
Secondly, can either the L720 or the I545 be unlocked to work with Tmo and AT&T in the US? I assume they all have the same radios, maybe just a firmware lock on frequencies?

The locked down bootloader should be only AT&T and Verizon.
The I545 should work on Tmobile and AT&T. . The L720 will not work on Tmobile or AT&T due to it being CDMA.

If you're liking for something you can rom and root easily and isn't carrier locked consider the nexus 5. I love it no carrier bloat and no gimmicky stuff you'll only use once.
Sent from my Nexus 5

I strongly agree with "jd1639"
Sent from my Nexus 5 using Tapatalk

Kaze105 said:
The locked down bootloader should be only AT&T and Verizon.
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Click to collapse
Good to know. Thanks!
Kaze105 said:
The I545 should work on Tmobile and AT&T. . The L720 will not work on Tmobile or AT&T due to it being CDMA.
Click to expand...
Click to collapse
I understand that Verizon and Sprint use CDMA, Tmo and AT&T use GSM. But phone wise, don't all four US carrier S4 variants contain the same radios? Did Samsung actually yank CDMA radios from the GSM variants and vice versa? just looking for clarification.
Let me ask another way... if you guys were to recommend an S4 for US GSM networks that could be "easily" ROM'd/root'd at will, which would you suggest?
I've considered the Nexus 5 very heavily, but I prefer the hard buttons on the S4 because they seem to leave a bit more screen real estate than the soft buttons on the N5. I'm somewhat trying for an N5 like experience on the S4. Yeah, I want to have my cake and eat it too.

Rickerdo said:
Good to know. Thanks!
I understand that Verizon and Sprint use CDMA, Tmo and AT&T use GSM. But phone wise, don't all four US carrier S4 variants contain the same radios? Did Samsung actually yank CDMA radios from the GSM variants and vice versa? just looking for clarification.
Let me ask another way... if you guys were to recommend an S4 for US GSM networks that could be "easily" ROM'd/root'd at will, which would you suggest?
I've considered the Nexus 5 very heavily, but I prefer the hard buttons on the S4 because they seem to leave a bit more screen real estate than the soft buttons on the N5. I'm somewhat trying for an N5 like experience on the S4. Yeah, I want to have my cake and eat it too.
Click to expand...
Click to collapse
For a bit more cash they have the Google Play Edition S4 from the play store as well at $649.00
None Touchwiz OS
https://play.google.com/store/devic...oogle_Play_edition?id=samsung_galaxy_s4&hl=en
Sent from my Nexus 5 using Tapatalk

jball said:
For a bit more cash they have the Google Play Edition S4 from the play store as well at $649.00
None Touchwiz OS
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
I think I left out the most important part... I'm cheap, er um, I mean very frugal. My like new I337 from ebay only cost me $370, so I'm looking to replace it with something around the same price that's more "hackable". This is why the Nexus 5 looked so appealing directly from the Play store. but, again, the screen on the N5 gets robbed a bit by the soft keys.
So, I guess I'm looking at an M919 (Tmo variant) as the best bang for the buck in terms of hacking friendly S4's. Is that the general consensus?

Honestly the keys aren't that bad once you have your hands on the Nexus 5 .the lack of a menu/settings button is a bit odd but the phone makes up for it in stock smoothness
Sent from my Nexus 5 using Tapatalk

[Q] Best buy "unlocked" galaxy s5: unlocked bootloader?

I've been an iPhone user for 5 years now. 3G and 5 versions. I am tired of iTunes I would also like to tinker a bit with my next phone. . I have used Linux as my main desktop os for a few years.
Anyways, I'm on a grandfathered unlimited data plan on att. My iphone 5 has no working power button, the mic is defective and the battery is worn.
I work in construction so i was considering the s5 for its dust rating and removable battery.
I spoke with tmobile today and they told me that any tmobile device, even if bought for full price new on amazon or best buy would be locked to tmobile service. They informed me I would need service with them in order to unlock. If that's the case it rules out buying a tmobile version for the unlocked bootloader.
Does the unlocked version from bestbuy come with the unlocked boot loader?

To clarify I meant the model listed as "Sam G900"

Sayn3ver said:
To clarify I meant the model listed as "Sam G900"
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Click to collapse
Go into settings and in "about device" for the model name. Sam G900 is not a model name.

lingowistico said:
Go into settings and in "about device" for the model name. Sam G900 is not a model name.
Click to expand...
Click to collapse
I'm pretty sure he's just going off what best buy says for the model.
I too am wondering this question. Very disappointed in the new S6, thought it was going to be "the next big thing", turns out they just want to be like apple now.
Side note, where would u recommend buying an unlocked bootloader S5, that has LTE capabilities for att? Or does that not exist in the US? Been searching but coming up empty handed.
Sent from my SAMSUNG-SGH-I337

I don't have the phone I am referencing. Like mentioned earlier, it's just the model number off of best buys webpage. They have the g900a model and a Sam-g900 for sale. They only sell the tmobile prepaids unlocked at a higher price point.
Is there a reputable online seller of new or refurbished unlocked tmobile versions?
I don't know if I wanna gamble buying used.

fals3illusion said:
I'm pretty sure he's just going off what best buy says for the model.
I too am wondering this question. Very disappointed in the new S6, thought it was going to be "the next big thing", turns out they just want to be like apple now.
Side note, where would u recommend buying an unlocked bootloader S5, that has LTE capabilities for att? Or does that not exist in the US? Been searching but coming up empty handed.
Sent from my SAMSUNG-SGH-I337
Click to expand...
Click to collapse
Buy a 900f from ebay. There are tons of reputable sellers there, just look at their feedback score. All qualcomm models support all lte frequencies, however they're not activated by default. There's a guide in general or q&a which shows how to activate all freqeuncies

lingowistico said:
Buy a 900f from ebay. There are tons of reputable sellers there, just look at their feedback score. All qualcomm models support all lte frequencies, however they're not activated by default. There's a guide in general or q&a which shows how to activate all freqeuncies
Click to expand...
Click to collapse
Does the 900f come with unlocked bootloaders? Is there a way you can identify if they have an unlocked bootloader without physically checking the phone just don't want to spend hundreds of dollars and kinda get stuck with a phone that's not what I wanted.
Sent from my SAMSUNG-SGH-I337 using XDA Free mobile app

I just purchased an unlocked GS5 G900T (Tmobile version) from eBay yesterday, and should have it by the end of the week. I've purchased my last 3 phones from eBay, and all have been true to the ad, and in excellent condition.
You do need to study the photos closely though, and make sure the seller has good feed back, and a lot of feedback (I never buy from sellers who have only a few ratings and/or using a new account).
I got this phone to use with ATT and wanted an unlocked bootloader. Kinda wish I knew that you could activate the frequencies on the 900F though, as it seems like most of the development is for that model. Oh well, as long as I can root and have a few choices of ROMs, I'll be happy.
I'll probably be using some sort of stock based rom on this phone (for a while at least).

fals3illusion said:
Does the 900f come with unlocked bootloaders? Is there a way you can identify if they have an unlocked bootloader without physically checking the phone just don't want to spend hundreds of dollars and kinda get stuck with a phone that's not what I wanted.
Sent from my SAMSUNG-SGH-I337 using XDA Free mobile app
Click to expand...
Click to collapse
Yes, the 900f/klte/international has an unlocked bootloader

lingowistico said:
Yes, the 900f/klte/international has an unlocked bootloader
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Click to collapse
ok cool, thanks for all the help!!
I did not know that T-Mobiles Galaxy S5 Came with unlocked bootloaders. I am just going to get one from them since T-Mobile and ATT run on basically the same LTE Basebands and LTE will not be affected as much as the international version when i'm on ATT's network

fals3illusion said:
I'm pretty sure he's just going off what best buy says for the model.
I too am wondering this question. Very disappointed in the new S6, thought it was going to be "the next big thing", turns out they just want to be like apple now.
Side note, where would u recommend buying an unlocked bootloader S5, that has LTE capabilities for att? Or does that not exist in the US? Been searching but coming up empty handed.
Sent from my SAMSUNG-SGH-I337
Click to expand...
Click to collapse
didn't read the rest of the replies but cricket...they sell it with unlocked boot loader, and you can sim unlock after six months...but they are owned wholly by att so you'll have att's reception and reliability. Of course your unlimited data would be history but crickets rates are significantly lower than most other mvno carriers
Edit: the model no is sm-g900az
Sent from my SM-G900F using Tapatalk

I called bestbuy.com customer service. The customer service agent was no help. No additional info than what's provided on the webpage (actual samsung model # is what I was looking for).
She transferred me to their technical support department. The gentleman spent about 5 minutes or so searching and couldn't come up with anything more.
I was told to call an actual best buy store and speak with their mobile department.
I called later today when best buy opened up. Sat on hold for 8min before an actual human being answered the phone. They too were no help. The conversation went like this...
Me: do you know which model of the g900 the sku 5760005 is referring to. . The listed model number Sam-g900 with that sku# is not an actual samsung model number.
Them: it's a g900.
Me: no you do not understand, g900 should be followed by one more letter. Is it a g900a, g900t, g900v, g900f, g900h, etc?
Them: it's a g900. What provider do you have?
Me: I'm on att but probably going to tmobile soon.
Them: we don't carry tmobile. I have a g900a. It works good. (they have the prepaid tmobile s5 on their website).
Me: nvm. Thanks have a nice day.....click.

Verizon vs T-Mobile S5 for TING?

Hello all,
I will need some UberGeek advice for this one...lol
I use TING as my MVNO provider. They offer CDMA and GSM networks backboning on Sprint and T-Mobile. I had to get a new phone and ordered a Sprint CDMA version G900P but received a Verizon model G900V. It works perfectly fine on the TING network.
I am just wondering if there is any reason not to get this phone and to go with a T-Mobile model instead? I normally would go Sprint/CDMA but wanted to try out GSM this time. Both have excellent coverage in my area. I also know about the ATT/Verizon bootloader being locked. I have already rooted this and it's running Lollipop just fine a sper the instructions found in threads here.
TING told me the phone is no different essentially and there should be no problems. As always their cust, svc. was excellent and informative. This phone apparently has dual radios...CDMA and GSM. I don't have to worry about warranties, KNOW tripping or Verizon's bs. As I said, I am rooted and running fine. I will either debloat this sucker or go with another ROM. Right now THE only bugaboo I see is that there are so few ROMs for the Verizon model. I am not into switching ROMs. If I ditch a debloated stock setup, it would have to be very something very clean and stable based on Lollipop. Seems like CM 12.1 could be nice but right now slightly risky and they don't have the Fingerprint feature working either.
Does anyone feel it would be smarter to return this and get a T-Mobile model? Any food for thought or advice or "Here is why you'll regret the Verizon model 6 months from now" kind of advice?
Thanks in advance!!!!!!!!

Besides the locked bootloader, the G900V is the same phone as the rest of the S5's (of course with different radios for CDMA). If you're cool with just running stock firmware forever then keep the Verizon model. The T-Mobile model would allow you to do whatever you like with it though, as the bootloader is unlocked. Virtually no possibility of losing root.

Sean89us said:
Besides the locked bootloader, the G900V is the same phone as the rest of the S5's (of course with different radios for CDMA). If you're cool with just running stock firmware forever then keep the Verizon model. The T-Mobile model would allow you to do whatever you like with it though, as the bootloader is unlocked. Virtually no possibility of losing root.
Click to expand...
Click to collapse
Thanks for the response. Pretty much what I figured. I have it rooted and using Safe Strap and MIGHT toy with CM 12.1 since there are many out there with the Verizon model that seem to like it. Plenty of YouTube videos too.

New S4 Recommendations

I'm looking to buy a new phone but don't want/need the latest and greatest. I'm happy with the performance of my HTC One Mini, my work HTC One X/XL and my wife's S4 Active, all AT&T phones used in the U.S. My One Mini just suffered a horrible mountain bike crash which busted the screen up pretty bad, then too, my old eyes are tired of that tiny screen. I've also had bad luck with the built in battery and lack of SD card slot. So I was thinking S4 would be ok by me. Asking on the device forum I've gotten 50-11 answers some of which are conflicting answers. I was thinking the i9505 would be the right phone until someone piped up stating it wouldn't work on LTE here. From all I've seen it looks to me like that senior member don't know what they're talking about. Here's my criteria:
1. 4.5" to 5" screen
2. Unlocked/unlockable and can easily accept custom ROMs
3. Prefer to stick with a Kit Kat Rom as it gets along with my Do Not Disturb app better than Lollipop due to the built-in app on Lollipop
4. Removable battery
5. SD Slot
6. LTE service on AT&T/T-Mobile and Caribbean and South American Countries
7. Custom ROM must allow hotspot w/o AT&T controlling my use (I have unlimited internet on my plan and want to make use of it)
Background: I'm almost green having only installed a custom ROM on my work phone an HTC One X/XL from AT&T. Apparently it's one of the harder phones to unlock the bootloader and permanent Root is impossible I think. I 1st installed CM12.1 on the HTC ONE X and ran into conflicts and buggy operations. After a few weeks of testing I backed it up, wiped it and installed CM11 which I truly like. No experience or much understanding of KNOX, ODIN or ODEX. I only read bits and pieces on those while trying to figure out which S4 variant will fit my need. Lastly, were can I get a new phone off contract? Anybody purchased from www.Cell2Get.com? I was about to buy this phone prior to the member claiming it wouldn't work on AT&T.
http://www.cell2get.com/samsung-galaxy-s4-i9505-16gb-unlocked-gsm-android-cell-phone-p-5122.html

IRBent said:
I'm looking to buy a new phone but don't want/need the latest and greatest. I'm happy with the performance of my HTC One Mini, my work HTC One X/XL and my wife's S4 Active, all AT&T phones used in the U.S. My One Mini just suffered a horrible mountain bike crash which busted the screen up pretty bad, then too, my old eyes are tired of that tiny screen. I've also had bad luck with the built in battery and lack of SD card slot. So I was thinking S4 would be ok by me. Asking on the device forum I've gotten 50-11 answers some of which are conflicting answers. I was thinking the i9505 would be the right phone until someone piped up stating it wouldn't work on LTE here. From all I've seen it looks to me like that senior member don't know what they're talking about. Here's my criteria:
1. 4.5" to 5" screen
2. Unlocked/unlockable and can easily accept custom ROMs
3. Prefer to stick with a Kit Kat Rom as it gets along with my Do Not Disturb app better than Lollipop due to the built-in app on Lollipop
4. Removable battery
5. SD Slot
6. LTE service on AT&T/T-Mobile and Caribbean and South American Countries
7. Custom ROM must allow hotspot w/o AT&T controlling my use (I have unlimited internet on my plan and want to make use of it)
Background: I'm almost green having only installed a custom ROM on my work phone an HTC One X/XL from AT&T. Apparently it's one of the harder phones to unlock the bootloader and permanent Root is impossible I think. I 1st installed CM12.1 on the HTC ONE X and ran into conflicts and buggy operations. After a few weeks of testing I backed it up, wiped it and installed CM11 which I truly like. No experience or much understanding of KNOX, ODIN or ODEX. I only read bits and pieces on those while trying to figure out which S4 variant will fit my need. Lastly, were can I get a new phone off contract? Anybody purchased from www.Cell2Get.com? I was about to buy this phone prior to the member claiming it wouldn't work on AT&T.
http://www.cell2get.com/samsung-galaxy-s4-i9505-16gb-unlocked-gsm-android-cell-phone-p-5122.html
Click to expand...
Click to collapse
- AT&T has it's own variant of the S4. It's called the "SGH-I337".
- The I9505 will not work with LTE on the AT&T network. It support different bands. So the member was correct. You can see it here:
https://en.wikipedia.org/wiki/Samsung_Galaxy_S4#Model_variants
- The "SGH-I337" has a locked bootloader and cannot be unlocked. Only some old devices will have an unlocked bootloader because they never upgraded their software. Thus you cannot use custom roms like CM.

Lennyz1988 said:
- AT&T has it's own variant of the S4. It's called the "SGH-I337".
- The I9505 will not work with LTE on the AT&T network. It support different bands. So the member was correct. You can see it here:
https://en.wikipedia.org/wiki/Samsung_Galaxy_S4#Model_variants
- The "SGH-I337" has a locked bootloader and cannot be unlocked. Only some old devices will have an unlocked bootloader because they never upgraded their software. Thus you cannot use custom roms like CM.
Click to expand...
Click to collapse
So is the GT-I9505G the preferred phone to have and to mod and if so, can I buy new one without getting a fake?
"Google Play Edition
At the Google I/O 2013 keynote, Samsung and Google revealed that an edition of the U.S. S4 would be released on June 26, 2013 through Google Play, initially featuring stock Android 4.2.2, later updated to 4.4.4, with Samsung provided updates; it has an unlockable bootloader (similar to Nexus devices) and supports LTE on AT&T and T-Mobile's networks. The model number is GT-I9505G."

I'm likely "that member", because I have an I9505 (not I9505G) running on Straight Talk, which is a US MVNO that rents bandwidth from all the major US carriers. The I9505 will not work on LTE here in the US because the LTE frequencies used worldwide (1, 3, 5, 7, 8, 20) are not the frequencies used by the carriers here in the US. The I9505G is a different story. It has the LTE frequencies needed to work here in the US, and does not have Touchwiz as it uses stock Android.
You can't purchase one new because they've been discontinued for some time now. You may want to check out Swappa (link at the top of the page) and see if they have a used one you can purchase.

Strephon Alkhalikoi said:
I'm likely "that member", because I have an I9505 (not I9505G) running on Straight Talk, which is a US MVNO that rents bandwidth from all the major US carriers. The I9505 will not work on LTE here in the US because the LTE frequencies used worldwide (1, 3, 5, 7, 8, 20) are not the frequencies used by the carriers here in the US. The I9505G is a different story. It has the LTE frequencies needed to work here in the US, and does not have Touchwiz as it uses stock Android.
You can't purchase one new because they've been discontinued for some time now. You may want to check out Swappa (link at the top of the page) and see if they have a used one you can purchase.
Click to expand...
Click to collapse
Really good and interesting reply. Being new to this stuff and having not kept up with cellphone technology, some of the things you guys just know, I'm having to try to understand. At first I assumed all 9505's were the same, but apparently I was wrong there. Then I also thought that since most cellphone review sites showed a plethora of Freq. and bands, with at least on or two being those that AT&T and most other North American GSM carriers use, I assume that meant I could get that model of phone. little did I know that those two lines of freqs and bands were for different versions of that same model, one for here and being a carrier locked phone and the other line being and international phone without the proper band for use here. So now after learning that difference it appears to me that there may be now way possible to purchase a new S4 and turn it into a custom ROM phone. So if I understand you and the carrier stuff correctly, you're using a plain 9505 and piggybacking off AT&T by way of StraightTalk like so many of us do. However since your phone is an international version you don't have LTE, is that right? One last thing I've yet to read or learn about but saw when I was putting CM11 and 12.1 on my HTC One X/XL (AT&T), I kept seeing stuff about "the radio". The way it read made me think they were NOT talking about an FM radio for music, but the freqs the phone itself uses. I think I recall them flashing "radios" which I assume they meant they were able to change the original freqs/bands that the model came with to one more useful here. Is that something that truly exists and can be done even on an S4 variant? My assumption is that it CANNOT be done or else you'd have done so already on your i9505.

IRBent said:
So if I understand you and the carrier stuff correctly, you're using a plain 9505 and piggybacking off AT&T by way of StraightTalk like so many of us do. However since your phone is an international version you don't have LTE, is that right?
Click to expand...
Click to collapse
Correct.
IRBent said:
My assumption is that it CANNOT be done or else you'd have done so already on your i9505.
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Click to collapse
Again correct. With Samsung, their firmware loading software, Odin, actually checks and makes sure the parts of the firmware match the model of the S4 connected to the PC. If they don't match, Odin will instantly fail. The only way to try and enable LTE on the I9505 is to delve into the low-level firmware for the LTE chip and attempt to rewrite it so it can see the added frequencies. However, I don't recommend it. Not only is it a very intricate process compared to something like rooting, it's also quite possible that you could render the LTE chip non-functional. I tried it, and nearly lost the ability to use my phone at all due to having my phone's SIM lock restored.
If you do decide to get an S4, an I9505G is likely your best bet. Not only does it have the AT&T frequencies, it's also got an unlocked bootloader (unlike the AT&T model) and is also carrier unlocked right out of the box. That last means you can use it on T-Mobile and carriers which use GSM SIM cards. Other choices would be the T-Mobile S4 (SGH-M919) or the North American S4 (SGH-I337M). All these phones include the AT&T frequencies and also have an unlocked bootloader so customization is easier.

Strephon Alkhalikoi said:
If you do decide to get an S4, an I9505G is likely your best bet. Not only does it have the AT&T frequencies, it's also got an unlocked bootloader (unlike the AT&T model) and is also carrier unlocked right out of the box. That last means you can use it on T-Mobile and carriers which use GSM SIM cards. Other choices would be the T-Mobile S4 (SGH-M919) or the North American S4 (SGH-I337M). All these phones include the AT&T frequencies and also have an unlocked bootloader so customization is easier.
Click to expand...
Click to collapse
I thank you so much sir. This answer is direct and explains exactly what I wanted to know. I only wish it were possible to purchase one of those models new so I could ensure years of use void of glitches due to possible abuse by the previous owner. If I can't find one of the above models I will probably be looking for some other make/model, preferably a new phone not used. Do you know if it's possible to get a new phone that meets the criteria below?
1. Unlocked bootloader or one that can be unlocked
2. Removable battery
3. 4.7" - 5" screen
4. SD card
5. Capable of being used as a hotspot ( I have unlimited internet but need to thwart AT&T from controlling my use)
6. Rootable and custom ROM capable
7. Can be used in U.S, South America and Caribbean (I think most of those places all use the same freqs/bands as U.S.)

That is why on Swappa you search for the ones labeled Mint or New. My device was Mint off Swappa, and the main reasons were that it was always in a case, and had a tempered glass screen protector installed.
For a current flagship-level device, looking at your laundry list, I believe you need to adjust your expectations. Not because of the software, but because of the hardware. LG is perhaps the only manufacturer still offering both removable batteries and MicroSD card slots, but their flagship device has a larger screen than you want. Motorola doesn't have removable batteries. Google provides neither, just like Samsung. Sony is an unknown, but their devices are not common here in the US.
Your best option is to go with a larger screen size and get an LG G4. If you absolutely MUST have the smaller screen, then you want a used Galaxy S4 or S5, so long as they aren't AT&T devices.

Strephon Alkhalikoi said:
For a current flagship-level device, looking at your laundry list, I believe you need to adjust your expectations. Not because of the software, but because of the hardware. LG is perhaps the only manufacturer still offering both removable batteries and MicroSD card slots, but their flagship device has a larger screen than you want. Motorola doesn't have removable batteries. Google provides neither, just like Samsung. Sony is an unknown, but their devices are not common here in the US.
Your best option is to go with a larger screen size and get an LG G4. If you absolutely MUST have the smaller screen, then you want a used Galaxy S4 or S5, so long as they aren't AT&T devices.
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I guess I should have made it clear too that flagships, latest and greatest wasn't necessary. I'm happy with the speeds my older HTC ONE X and HTC ONE Mini supply. But closing in on 50 years old, my eyes and the Mini's screen don't get along so well anymore.

If you have bad eyesight, a bigger screen can be a godsend.

Strephon Alkhalikoi said:
If you have bad eyesight, a bigger screen can be a godsend.
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Exactly. I need a bigger screen but a smaller phone because my hands can't reach around my HTC ONE Mini. Sometimes it sucks being 5'4". LOL

IRBent said:
Exactly. I need a bigger screen but a smaller phone because my hands can't reach around my HTC ONE Mini. Sometimes it sucks being 5'4". LOL
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I would not recommend someone buying the S4 anymore. It was and still is a great phone, but newer models are just way better. The battery life is to short with the standard battery.
Based on your preferences I would recommend one of the following:
- LG Nexus 5
- Oneplus one
- Motorola X Play
But then again, maybe they are to big for you. The LG is the smallest but doesn't have a sd slot.

Lennyz1988 said:
Based on your preferences I would recommend one of the following:
- LG Nexus 5
- Oneplus one
- Motorola X Play
But then again, maybe they are to big for you. The LG is the smallest but doesn't have a sd slot.
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Amazing discovery by me just now. Yes, I've seen folks here talk about the brand OnePlus but I didn't know who or what OnePlus was until just now. I used to keep up with all things electronics related, reading review sites and forums like this. 10 years ago or so a DVD manufacturer named OPPO was the talk. Excellent brand but unheard of. I just learned that OnePlus is a company started by an OPPO founder. I'm so out of the loop.