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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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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

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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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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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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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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!
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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?

Can an AT&T or T-Mobile S4 be used on Verizon

I got a Galaxy S4 for AT&T cheap so cheap I just bought to play with. Any way to make it work on my provider verizon? Can I reflash the modem, rom, activate it change the sim or something to make it work? Or should I just turn it in to a small tablet for my son. lol

hunterboy2011 said:
I got a Galaxy S4 for AT&T cheap so cheap I just bought to play with. Any way to make it work on my provider verizon? Can I reflash the modem, rom, activate it change the sim or something to make it work? Or should I just turn it in to a small tablet for my son. lol
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I dont think u can use that as verizon is CDMA and at&t is gsm

That is correct. CDMA phones and GSM phones are not interchangeable. Neither will work on the other network. If there is nothing wrong with the phone, you could always just sell it on eBay or somewhere, and given the going rate for the S4 now, you should be able to get enough money to buy a Verizon one easily. That would be a very expensive "mini-tablet" for your son. :silly:

shuddle13 said:
That is correct. CDMA phones and GSM phones are not interchangeable. Neither will work on the other network. If there is nothing wrong with the phone, you could always just sell it on eBay or somewhere, and given the going rate for the S4 now, you should be able to get enough money to buy a Verizon one easily. That would be a very expensive "mini-tablet" for your son. :silly:
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Partially true. You can use a Verizon GS3/Note 2/iPhone 5 on GSM with some simple mods. To the |OP|, I would recommend putting it on swappa.com, XDA's official marketplace. Good, honest members are willing to pay top dollar for a clean phone.

I wasn't aware of that - in regards to the GS3/Note 2/iPhone 5. Thanks for clarifying!
Sent from my SCH-I545 using Tapatalk 4 Beta

[Q] Will my Unlocked Sprint S4 work with a Verizon prepaid SIM?

I have been doing research and searching these forums for a few days now, I'm trying to not be one of those people who ask questions that have been answered. But at this point I'm at the end of the road.
I bought a Sprint Galaxy S4, model SPH-L720.
I unlocked it using this method Sprint Galaxy S IV SPH-L720 SIM Unlock Method
Reverted back to MDC baseband and all that good stuff, just as instructed. It seemed to have went well without a hitch.
My question now is:
I want to buy one of these Verizon 4G Sim Activation Kits from walmart
Is it possible that I can buy one of those, insert the SIM into my unlocked Sprint S4, and have a working phone? I ask because I don't want to drop $50 if it doesn't have a chance of working. The instructions for this say that it will work with a VERIZON S4, but since my SPRINT S4 is unlocked, should that be okay?
I don't know much, but in my reading I found that Sprint and Verizon both use CDMA, not GSM. So I figured I had a better chance of this phone working if I go with Verizon because of this.
I am in the United States.
If you need any other information or screen shots please let me know, thank you for taking the time to help me out!!
EDIT: would it be possible to test it out, if one of my friends has a verizon phone under contract, and I took their SIM and inserted it into my phone?

Try it.

Like the guy above me said. Try it. One way to find out. Personally I don't think it would work. As the whole point of unlocking the sprint Gs4 is to use it on GSM networks. From what I know you have to flash the sprint phone to Verizon. Plus you WONT get LTE on Verizon because the bands are not supported. So you'll only get 3g.

daniel4653 said:
Like the guy above me said. Try it. One way to find out. Personally I don't think it would work. As the whole point of unlocking the sprint Gs4 is to use it on GSM networks. From what I know you have to flash the sprint phone to Verizon. Plus you WONT get LTE on Verizon because the bands are not supported. So you'll only get 3g.
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thank you for the info! i'm just learning about all of this, so i don't have a firm grip on everything yet.
in the tutorial i used and linked above, the file I used with Odin was actually titled "S4 Flasher", so I believe I unlocked it and flashed it with this? Again, Im sorry, Ive tried searching and am just looking for verification if Im correct.
I'm not worried about LTE, 3G is fine really. Also, I'm not set on Verizon, I just want my phone to work, doesn't matter what network I'm using. If it would be "safer" or a better bet to get into a GSM prepaid, I will do that instead. I was just under the assumption (incorrectly probably lol) that since sprint is CDMA, that going to another CDMA carrier would be easier.
Cricket, Net10, StraightTalk, and AT&T etc are all available at the store I think if I go GSM
Again thanks for taking the time to help everyone!

Galaxy330 said:
thank you for the info! i'm just learning about all of this, so i don't have a firm grip on everything yet.
in the tutorial i used and linked above, the file I used with Odin was actually titled "S4 Flasher", so I believe I unlocked it and flashed it with this? Again, Im sorry, Ive tried searching and am just looking for verification if Im correct.
I'm not worried about LTE, 3G is fine really. Also, I'm not set on Verizon, I just want my phone to work, doesn't matter what network I'm using. If it would be "safer" or a better bet to get into a GSM prepaid, I will do that instead. I was just under the assumption (incorrectly probably lol) that since sprint is CDMA, that going to another CDMA carrier would be easier.
Cricket, Net10, StraightTalk, and AT&T etc are all available at the store I think if I go GSM
Again thanks for taking the time to help everyone!
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I unlocked my sprint GS4 and went to Cricket. And I've been happier than when i was with Sprint (service wise). I have signal in 98% of the places I go to. Which is a HUGE improvement over sprint. And even though this phone only connects to HSPA+ which is capped at 3.5 Mbps its plenty fast for all my daily activities. So I recommend a GSM prepaid.

Taking Sprint S4 to Verizon? Other Carriers?

Greetings, I can't seem to find a definite answer or guide to this. I have a sprint galaxy s4 and once my contract was up I was looking to get off sprint and onto another contract, looking at verizon as my friends happen with them. I know they both use cdma. If I have them unlock the phone, can it be brought over and used that easily? If not, what must I do? Custom root? Find a verizon s4 motherboard with clean esn? I'm willing to do it to not spend a few hundred bucks on a new phone. I'd liketo give it to my mother and get the s6 for myself when it comes out.

Man, I'm 0 for 2 here. Anything?

bump?

Another bump. Can anyone help me?

94 views, not a peep. I thought these forums were active and helpful? Perhaps not?
All of my research leads me to believe I'd need to get a verizon logicboard with a clean esn. Maybe I can trade for one, but I would like some confirmation before I spend the 80 bucks or so. Thanks.

Dabba87 said:
Greetings, I can't seem to find a definite answer or guide to this. I have a sprint galaxy s4 and once my contract was up I was looking to get off sprint and onto another contract, looking at verizon as my friends happen with them. I know they both use cdma. If I have them unlock the phone, can it be brought over and used that easily? If not, what must I do? Custom root? Find a verizon s4 motherboard with clean esn? I'm willing to do it to not spend a few hundred bucks on a new phone. I'd liketo give it to my mother and get the s6 for myself when it comes out.
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is your phone still locked on sprint?

xDroidZz said:
is your phone still locked on sprint?
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Hello DroidZ,
It is. I was planning to have them unlock it. But I heard that though both are CDMA, I wouldnt have full 4g with it. I was contemplating buying a verizon (or any other carrier's logic board that I would switch to) and sell my sprint board.
Of course I'd need a clean esn right?

Another bump. Does the lack of responses mean it's harder than a logical board swap?

bump again

Bump

You can use the Sprint S4 on Verizon, assuming it's possible for you to unlock it from Sprint's network, but LTE will never work. Verizon uses standard LTE frequencies (750 & 1700MHz) while Sprint uses "Extended PCS", i.e. Spark. Totally different technologies.
You'll need a new phone to take full advantage of Verizon infrastructure, which unfortunately means dealing with an encrypted (locked) bootloader.

Strephon Alkhalikoi said:
You can use the Sprint S4 on Verizon, assuming it's possible for you to unlock it from Sprint's network, but LTE will never work. Verizon uses standard LTE frequencies (750 & 1700MHz) while Sprint uses "Extended PCS", i.e. Spark. Totally different technologies.
You'll need a new phone to take full advantage of Verizon infrastructure, which unfortunately means dealing with an encrypted (locked) bootloader.
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Greetings,
Does that mean swapping the logic board with a verizon version won't fix the LTE problem? So I'd get normal 4g? I suppose I could try it. Couldnt deal with 3G. I guess I'm asking if there are any parts I could swap out to fix the problem or if I'm just screwed.
Thanks man.
Dabba

If you have a Sprint phone, you cannot simply purchase a Verizon motherboard and replace the Sprint motherboard with it. Why it won't work is because the design of the two motherboards is sufficiently different that if you tried it the Verizon motherboard wouldn't fit in the midframe.
In simpler language, you're screwed. You need a new phone if you want LTE. Whether that is a new phone from Verizon or a used device off Swappa is irrelevant, so long as the MEID is clear.

Hmm, I didnt know the motherboards were actually different. That sucks, I assumed they were more like computers. Oh well, thanks for the info though, now I know!
Again, thanks a bunch

Att G6 Edge + on Verizon

I just won an ATT Galaxy 6S Edge + but I'm a Verizon subscriber. Does anyone know if I can get it to work on Verizon network?

sandstorm77 said:
I just won an ATT Galaxy 6S Edge + but I'm a Verizon subscriber. Does anyone know if I can get it to work on Verizon network?
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Probably but you'll have to find out how or where to get it unlocked and then have Verizon input their apn. Maybe they'd unlock it and activate it for you for a fee!

Verizon phones also support CDMA, you can't use a GSM only phone on Verizon network.

sandstorm77 said:
I just won an ATT Galaxy 6S Edge + but I'm a Verizon subscriber. Does anyone know if I can get it to work on Verizon network?
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Just sell it and buy a verizon one! Thats what I would do...

overlord727 said:
Just sell it and buy a verizon one! Thats what I would do...
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I was hoping i could just activate it. I might try swapping it out at Best Buy as the box will still be sealed. If not then i will just sell it.

sandstorm77 said:
I was hoping i could just activate it. I might try swapping it out at Best Buy as the box will still be sealed. If not then i will just sell it.
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Unfortunately it won't activate on Verizon due to the nature of their networks. Hopefully you can swap it or yeah worst case, you can sell it for profit and get what you want!

overlord727 said:
Unfortunately it won't activate on Verizon due to the nature of their networks. Hopefully you can swap it or yeah worst case, you can sell it for profit and get what you want!
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thanks