Develop Bugs

[Q] Unlocked AT&T phones can verizon sim be used?

I am looking to purchase an AT&T Galaxy Note 2 and need the following question answered... I am aware of the unlock link http://forum.xda-developers.com/showthread.php?t=2014982 that uses the method of dialing the following keys *#197328640# but here is my concern... Does this method allow you to use a Verizon Sim as if you had purchased a Verizon Galaxy Note 2? In other words does it unlock the CDMA band also?
Thanks for any correct information...

The Adversary said:
I am looking to purchase an AT&T Galaxy Note 2 and need the following question answered... I am aware of the unlock link http://forum.xda-developers.com/showthread.php?t=2014982 that uses the method of dialing the following keys *#197328640# but here is my concern... Does this method allow you to use a Verizon Sim as if you had purchased a Verizon Galaxy Note 2? In other words does it unlock the CDMA band also?
Thanks for any correct information...
Click to expand...
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If im correct verizon and at&t use completely different frequency bands.
Sumone please correct me if im wrong
Sent from my SAMSUNG-SGH-I317 using xda app-developers app

Until vzw goes to VoIP in the next few years the only thing the sim supports is 4g data. Because lte is a gsm based network, sim cards are needed. Nothing else in a Verizon phone used the sim so no you would not receive full service using a vzw sim. Not sure if you'd receive data or not but I'm betting no

Verizon uses CDMA for voice, and CDMA/LTE for data. Not only are the LTE frequencies incompatible, but CDMA is incompatible as well. So no, the Note 2 will not work AT ALL on Verizon.
Also to note, Verizon will only let you activate VERIZON BRANDED phones on their network. You can't buy unlocked phones and use them like a GSM carrier (AT&T, T-Mobile in the US) would. Sprint is the same way.

entropism said:
Verizon uses CDMA for voice, and CDMA/LTE for data. Not only are the LTE frequencies incompatible, but CDMA is incompatible as well. So no, the Note 2 will not work AT ALL on Verizon.
Also to note, Verizon will only let you activate VERIZON BRANDED phones on their network. You can't buy unlocked phones and use them like a GSM carrier (AT&T, T-Mobile in the US) would. Sprint is the same way.
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Ok, so if I purchased a Verizon Galaxy Note 2, and rooted it, I could then use AT&T and later if I finally want to switch over to Verizon, I could... If I am mistaken about this, please let me know. Because I am trying to get a Galaxy Note 2 that will work with both GSM carriers and also work with Verizon when/if I choose to switch.

No. Verizon and AT&T phones/networks are not compatible with each other at all.
Sent from my SAMSUNG-SGH-I317 using xda app-developers app

The Adversary said:
Because I am trying to get a Galaxy Note 2 that will work with both GSM carriers and also work with Verizon when/if I choose to switch.
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This does not exist on ANY Note 2 on earth. Possible with *SOME* other phones, but not any Samsungs, and definitely more trouble than it's worth. NONE will be LTE compatible though. 99% of the GSM compatible phones on Verizon are locked on only work internationally, and will not work AT ALL for the US.

entropism said:
This does not exist on ANY Note 2 on earth. Possible with *SOME* other phones, but not any Samsungs, and definitely more trouble than it's worth. NONE will be LTE compatible though. 99% of the GSM compatible phones on Verizon are locked on only work internationally, and will not work AT ALL for the US.
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I've been wondering about this. Can't the Verizon "international" phones be unlocked, then used with a US SIM?

entropism said:
This does not exist on ANY Note 2 on earth. Possible with *SOME* other phones, but not any Samsungs, and definitely more trouble than it's worth. NONE will be LTE compatible though. 99% of the GSM compatible phones on Verizon are locked on only work internationally, and will not work AT ALL for the US.
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"Yes. Verizon GN 2 on AT&T network. Phone is rooted. AT&T APN added with APN Manager Pro. Decent speeds too with just 2 bars. Sent from my SCH-I605 using Tapatalk 2"
Just pulled this off of a different thread... http://forum.xda-developers.com/showthread.php?t=2044449
Seems like the Verizon GN2 can do AT&T with data, as long as you rooted and adjust the APN file. If this is incorrect please let me and the rest of the form know how or why this is incorrect....

The Adversary said:
"Yes. Verizon GN 2 on AT&T network. Phone is rooted. AT&T APN added with APN Manager Pro. Decent speeds too with just 2 bars. Sent from my SCH-I605 using Tapatalk 2"
Just pulled this off of a different thread... http://forum.xda-developers.com/showthread.php?t=2044449
Seems like the Verizon GN2 can do AT&T with data, as long as you rooted and adjust the APN file. If this is incorrect please let me and the rest of the form know how or why this is incorrect....
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I already said data "could" work. That'd not the issue. Getting everything to work is what seems to be unlikely. Different frequencies for voice/text.
Sent from the quad core monster in my pants

Any new Verizon phones can work on any GSM HSPA+ network with some trickery or are unlocked out the box. Some phones work on At&T and T-mobile while others only work with carriers outside the U.S. YMMV.
http://www.theverge.com/2012/9/25/3405610/verizon-iphone-5-unlocked-open-access-fcc
A guy has it working on AT&T.
http://forum.xda-developers.com/showthread.php?t=1905016&page=5

T-Mobile Galaxy Note 3 on Verizon?

Hello, everyone. Is this possible? I am absolutely sick of this locked bootloader and nothing working crap. I saw where you can use T-mobile on a Verizon device but can you go the other way as well? I really miss Cyanogenmod!

http://download.cyanogenmod.org/?device=hlte

Guero. said:
Hello, everyone. Is this possible? I am absolutely sick of this locked bootloader and nothing working crap. I saw where you can use T-mobile on a Verizon device but can you go the other way as well? I really miss Cyanogenmod!
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You can use the VZW devices on tmo but not the other way around. VZW uses cdma for voice and Tmobile devices do not carry the bands necessary as they are proprietary.
Sent from my SM-N900T using Tapatalk

Has it been attempted. On the Verizon board they seem to think it's only a software difference.

Guero. said:
Has it been attempted. On the Verizon board they seem to think it's only a software difference.
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First, there is no active CDMA radio in the N900T, so no, it's not just software. The Qualcomm SOC in this phone has the CDMA hardware permanently disabled.
Second, Verizon is very picky about CDMA devices they haven't sold, running in their network.
Since it would require a hack to enable the required bands (something not possible with this particular phone), there's no chance any non-native CDMA device would ever be allowed to register it's ESN on VZW's network.
Remember, the CDMA side does not use a SIM card, only the LTE side does.
Sent from my SM-N900T using XDA Premium 4 mobile app

Thanks for the help, time to put the Verizon phone on eBay and switch to t-mobile!

Developers Edition

So I was talking to a Samsung rep at a Best Buy and she told me they may release a Developers Edition of the Note 4. I Googled it and see confirmation that there will be a Developers edition and that it will be sold through Verizon but not subsidized to any carrier. It should be released mid-November and cost around $660.00 Full Price.
That being said, does anyone plan to get the Dev Edition in order to Root/ROM? I am still rocking my Galaxy S3 but may end up going with the Note 4 so long as it has full Root/ROM.

I already have a note 4 but i might...Is it going to be able to use AT&T's 4G LTE? or only H+?

It seems that it's going to be a Verizon exclusive and will stay that way... I guess that it could be unlocked but Verizon phones have no simcard right? So I assume it would never work with AT&T

lebertian said:
It seems that it's going to be a Verizon exclusive and will stay that way... I guess that it could be unlocked but Verizon phones have no simcard right? So I assume it would never work with AT&T
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Verizon uses sim cards now too. They use it for their 4g. If a verizon phone is unlocked it can be used on AT&T but usually only with H+. I just didn't know if there was a different case with this one. Why is verizon getting all of the good phones? Droid turbo and now this?

I'll probably wait until it does release to see if its compatible with AT&T but I definitely require it to be LTE and not just H+. Hopefully it is a fully unlocked device with all of the bands needed to work with AT&T.

If that's true I might even sell mine to get it

It's for Verizon only. They use a different LTE it's CDMA based so will be no help for ATT users. If you want to get one for ATT you need to have everyone blowing up their twitter Facebook etc to get one released.
Sent from my GT-N7105 using XDA Free mobile app

ShrekOpher said:
It's for Verizon only. They use a different LTE it's CDMA based so will be no help for ATT users. If you want to get one for ATT you need to have everyone blowing up their twitter Facebook etc to get one released.
Sent from my GT-N7105 using XDA Free mobile app
Click to expand...
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Just maybe like verizon's previous iphones that worked on att and tmobile just fine. But still doesnt make sense a developer version just for verizon, we know most developers are on gsm, jk

Tmobile Variant work with ATT all bands?

Hello All-
My Tmobile 6 Edge will be arriving tomorrow- Just curious if I ever decided to switch to ATT would the phone be able to take advantage of all the bands with ATT? Or would I be missing out on a couple?
Thank you for letting me know!
Scoob

scooby-snack said:
Hello All-
My Tmobile 6 Edge will be arriving tomorrow- Just curious if I ever decided to switch to ATT would the phone be able to take advantage of all the bands with ATT? Or would I be missing out on a couple?
Thank you for letting me know!
Scoob
Click to expand...
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T-Mobile Galaxy S6 Edge will fully operate with AT&T services.

LTE-X said:
T-Mobile Galaxy S6 Edge will fully operate with AT&T services.
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Only if we can unlock it

Right now it's unlockable. At least through my efforts.

mehdi_s82 said:
Only if we can unlock it
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Buy off-contract from T-Mobile and ask them to unlock it for you. I never had a problem doing that.

Itaintrite said:
Buy off-contract from T-Mobile and ask them to unlock it for you. I never had a problem doing that.
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Thats what most of us have done. I paid my device in full and they refuse to unlock it until I have been a T-mobile customer for 40 days.
OP - the T-Mobile edge lacks support for LTE bands 29 & 30 which you'll only need in a very heavily populated area. In most situations, the T-mobile edge will work great on AT&T.

verks said:
Right now it's unlockable. At least through my efforts.
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Is that a typo verks? Did you get it unlocked?

Goronok said:
Thats what most of us have done. I paid my device in full and they refuse to unlock it until I have been a T-mobile customer for 40 days.
OP - the T-Mobile edge lacks support for LTE bands 29 & 30 which you'll only need in a very heavily populated area. In most situations, the T-mobile edge will work great on AT&T.
Click to expand...
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Ask a friend who's been a T-Mobile customer for 40+ days to do it for you I did that with my sister's Note 4. Just had to use the phone for a day or two for it to register to the network.

Itaintrite said:
Ask a friend who's been a T-Mobile customer for 40+ days to do it for you I did that with my sister's Note 4. Just had to use the phone for a day or two for it to register to the network.
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The issue is that T-Mobile doesn't seem to know HOW to Unlock their own phone. At least that's what they're telling me. Supposedly, they may not have the instructions until after the 10th when the phone officially launches.

greyhulk said:
The issue is that T-Mobile doesn't seem to know HOW to Unlock their own phone. At least that's what they're telling me. Supposedly, they may not have the instructions until after the 10th when the phone officially launches.
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I unlocked my phone by using the pre-installed app which, after I hit unlock, claimed the device was unlocked and then simply disappeared from my launcher.

walloftext said:
I unlocked my phone by using the pre-installed app which, after I hit unlock, claimed the device was unlocked and then simply disappeared from my launcher.
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How long have you had tmobile for?
---------- Post added at 02:18 AM ---------- Previous post was at 02:16 AM ----------
Itaintrite said:
Ask a friend who's been a T-Mobile customer for 40+ days to do it for you I did that with my sister's Note 4. Just had to use the phone for a day or two for it to register to the network.
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So you used a friend's sim card for 2 days? Did you fully just let them use your phone for 2 days? If I can, I'd rather go this is route than wait another 32 days..

osmosizzz said:
How long have you had tmobile for?
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I have been a T-Mobile customer for about 3 years now. The point I was trying to make is that I didn't have to call T-Mobile to unlock the phone.

walloftext said:
I have been a T-Mobile customer for about 3 years now. The point I was trying to make is that I didn't have to call T-Mobile to unlock the phone.
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That's the thing. you have had tmobile for a while so unlocking it isnt an issue. that app checks how long your line has been active. i just activated mine to get the phone. sucks. i may end up switching to tmobile anyways. still deciding..

I want to buy a T-mobile s6 off craigslist (for $600 rather than $670+tax from T-mobile or $700 tonight only for an international version), but these posts are getting me scared. I also have no intention of starting up service with T-mobile. If I find a friend (or a seller) who is a loyal T-mobile customer, would I be able to unlock it in a timely fashion? Also, what specifically would the process be?

It will work on AT&T but the T-Mobile variant has fewer bands available.

The T-Mobile variant will have all bands with the exception of 20, 29, and 30.

done12many2 said:
The T-Mobile variant will have all bands with the exception of 20, 29, and 30.
Click to expand...
Click to collapse
Any idea if those missing bands are important or not?

I'd can't say that they are not important, but they do not account for the bulk of what you'll generally use. My understanding is they are going to be used in future high traffic areas, but my knowledge is pretty limited.
I can tell you that I have no LTE issues with my T-Mobile Note 4 which pulls generally the same speeds as my AT&T S6 edge side by side.

I'm in a bit of a predicament regarding purchasing my two S6 Edges. I've been on my two S4s for two years and got a Best buy protection plan for them which ends next month. Lucky for me the plan junked out and I'm getting two Bestbuy gift cards for the original value of my phones. The thing that sucks is they don't sell T-Mobile phones, or at least the T-Mobile S6 edge. I was leaning towards getting two At&t versions of the phone and unlocking them. However, I am not sure if features like VoLte(Voice over LTE). If I'm not mistaken LTE should work but I'm not to familiar with the At&t Edges frequency bands and Tmobiles network bands. Any help or suggestions would be greatly appreciated.

Kingissa said:
I'm in a bit of a predicament regarding purchasing my two S6 Edges. I've been on my two S4s for two years and got a Best buy protection plan for them which ends next month. Lucky for me the plan junked out and I'm getting two Bestbuy gift cards for the original value of my phones. The thing that sucks is they don't sell T-Mobile phones, or at least the T-Mobile S6 edge. I was leaning towards getting two At&t versions of the phone and unlocking them. However, I am not sure if features like VoLte(Voice over LTE). If I'm not mistaken LTE should work but I'm not to familiar with the At&t Edges frequency bands and Tmobiles network bands. Any help or suggestions would be greatly appreciated.
Click to expand...
Click to collapse
See attachments for bands supported by both AT&T and T-Mobile variants. If you're asking if both variant support VoLTE, they do.
The AT&T variant appears to covers all T-Mobile LTE bands but does not seem to cover the 1700 band.
Check threads on previous AT&T Galaxy models on T-Mobile.
I wish I could give you better clarity on using an AT&T device on T-Mobiles network, but I just haven't done it. I've only done it the other way around. I can tell you that I have done this for several generations of Galaxy releases and the results in performance has only been subpar on one occasion. I think that was the Note 2 or Note 3. I don't remember which one right now, but the data was just a little slower at times. This isn't what you're trying to do anyways.
I hope that help a little.

Unlocked TMobile on Verizon?

Sorry if this has been discussed, couldn't find it in search. There are a couple unlocked tmo phones available locally for a bit of a discount, and I'm wondering if there are any significant issues with using one of these phones on Verizon?

dopepope said:
Sorry if this has been discussed, couldn't find it in search. There are a couple unlocked tmo phones available locally for a bit of a discount, and I'm wondering if there are any significant issues with using one of these phones on Verizon?
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I've always used a carrier model, but there's been times I've used Verizon on T-Mobile. They were primarily iPhones.
Sent from my SM-N950U using Tapatalk

Carrier Switching Guide posted in guides ....

I have an network unlocked At&t Note 8 that i just configured for VZW using its APN settings and it did not work. The At&t models have the same if not more radio bands than VZW so im not sure what the problem is.

The At&t Note 8 need to have CDMA radio inside in order to work on Verizon.

New galaxy's have a universal modem but will have parts turned off. If the phone is unlocked you can flash the correct modem or the unlocked forward and it should work.

AT&T Note on VZW
kendotelie said:
I have an network unlocked At&t Note 8 that i just configured for VZW using its APN settings and it did not work. The At&t models have the same if not more radio bands than VZW so im not sure what the problem is.
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Hi did you ever get your AT&T Note 8 to work on VZW?

https://forum.xda-developers.com/showpost.php?p=74087340&postcount=1