[Q] what are the benefits of having an Unlocked T999? - T-Mobile, Samsung Galaxy SIII

Ok ive never tried unlocking my phone yet but if i were to do it are there any other benefits other than being able to switch your sims to those of other phone companies? like if i were to switch to a verizon sim would i be able to flash verizon roms or is the phone restricted to tmobile based roms?

Always flash ONLY those items built specifically for your model device.
Sent from my SGH-T999 using Tapatalk

jodady23 said:
Ok ive never tried unlocking my phone yet but if i were to do it are there any other benefits other than being able to switch your sims to those of other phone companies? like if i were to switch to a verizon sim would i be able to flash verizon roms or is the phone restricted to tmobile based roms?
Click to expand...
Click to collapse
Unlocking allows you to use that device with other Carriers. With VZW, given that this is GSM Device and VZW is CDMA, Inherently they are not compatible. However people have reported success using VZW S3 on T-Mo. So who knows.
As Doc said, you still won't be able to flash VZW Roms, Modem etc.

unlocking a T999 won't do anything for you if you stick with T-Mobile services. It's beneficial if you keep the same phone and switch to ATT for example. Or in my case, ship the phone overseas to family members that can use an un-locked phone on one of their cell phone services

Related

Unlocked T999 Rom/Carrier Question

I have an unlocked T-Mobile S3 and I am ready activate it on Straight Talk which I believe uses ATTs network. My question is concerning custom roms; can anyone confirm that using roms specifically for the T-Mobile version will or will not cause issues if i use a different carrier?
Thanks
Infamous_Cheez said:
I have an unlocked T-Mobile S3 and I am ready activate it on Straight Talk which I believe uses ATTs network. My question is concerning custom roms; can anyone confirm that using roms specifically for the T-Mobile version will or will not cause issues if i use a different carrier?
Thanks
Click to expand...
Click to collapse
No it will not.
Don_Perrignon said:
No it will not.
Click to expand...
Click to collapse
I was a bit confused because there are several threads/devs trying to make sure users know to flash the right rom for their phone version. I also know that the ATT & T-Mobile versions are identical, besides the ATT version supporting ATT's LTE frequency and TM's supporting their HSPA+ frequency, and since I bought this phone off contract w/o warranty I want to make sure don't end up with a $600 paperweight.
Thanks for your confirmation!
Wait... Just some that we're on the same page, I read that as if you took a T-Mo phone, with a custom ROM, unlocked it, and used the phone on another GSM carrier, would there be problems - the answer is no.
If you take a T-Mo phone and use another carrier's ROM that's not compatible with T-Mo's phone - yes you will have problems.

Tmobile S4, Verizon sim

Has anyone accomplished this? Running a Verizon sim in a unlocked Tmobile S4?
i am curious about this as well. i dont think the lte bands are the same though
Verizon is LTE 18. Not worried about that too much. I believe 3g will be all it will get
While a Verizon S4 will work with T-Mobile, I don't think a Verizon S4 will work with T-Mobile. Unless you can somehow enable CDMA radios, which technically don't exist in the gsm variants.
serio22 said:
While a Verizon S4 will work with T-Mobile, I don't think a Verizon S4 will work with T-Mobile. Unless you can somehow enable CDMA radios, which technically don't exist in the gsm variants.
Click to expand...
Click to collapse
All S4's are actually gsm, including Sprint and Verizon. Both are unlock able and able to use on other carriers, so CDMA isn't really necessary
ShinySide said:
All S4's are actually gsm, including Sprint and Verizon. Both are unlock able and able to use on other carriers, so CDMA isn't really necessary
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Click to collapse
Yes I know many Sprint and Verizon smartphones are world phones, but Verizon still uses CDMA. So wouldn't you will still need a CDMA capable device if you plan to use it with Verizon? If it was the other way around, that's a different story
serio22 said:
Yes I know many Sprint and Verizon smartphones are world phones, but Verizon still uses CDMA. So wouldn't you will still need a CDMA capable device if you plan to use it with Verizon? If it was the other way around, that's a different story
Click to expand...
Click to collapse
Yeah but that's why I was telling you.... if a Verizon S4 is gsm and not CDMA, why wouldn't a gsm work on Verizon if the same phone is gsm?
It's probably completely possible. Device wise.... the big problem would be getting Verizon to allow it on the network if it did
Well, i can't unlock the damn thing anyways. Tried 3 times to avail.
Just as soon as I Odin back the NH7 modem i loose the unlock. Very weird.
ShinySide said:
Yeah but that's why I was telling you.... if a Verizon S4 is gsm and not CDMA, why wouldn't a gsm work on Verizon if the same phone is gsm?
It's probably completely possible. Device wise.... the big problem would be getting Verizon to allow it on the network if it did
Click to expand...
Click to collapse
that's because it has both gsm and CDMA radios, while T-Mobile's does not. At least as far as we know. I think the gsm portion is there for when you travel for edge and HSPA connectivity and of course also for the use of LTE. If you insert a gsm sim card into a Verizon 'global' gsm/CDMA device, it will display a message "switching to Global mode," enabling full gsm mode. You still need a CDMA capable phone for activation on their network AFAIK.
The Sickness said:
Well, i can't unlock the damn thing anyways. Tried 3 times to avail.
Just as soon as I Odin back the NH7 modem i loose the unlock. Very weird.
Click to expand...
Click to collapse
I would give it a shot but don't have a different sim card to test
Don't sweat it. Im keeping it.
I tried my unlocked S4 with my girlfriend's Verizon SIM from her S5 and couldn't get it to connect to anything. I tried every different network mode I had available and couldn't get it to see any sort of a signal. I'm pretty sure I also tried to manually search for a network and saw Verizon as an option, but didn't end up getting anything out of it.
Punkamonk said:
I tried my unlocked S4 with my girlfriend's Verizon SIM from her S5 and couldn't get it to connect to anything. I tried every different network mode I had available and couldn't get it to see any sort of a signal. I'm pretty sure I also tried to manually search for a network and saw Verizon as an option, but didn't end up getting anything out of it.
Click to expand...
Click to collapse
It probably picked up the LTE signal, since it is gsm

? About Verizon Prepaid + Vzw M7

So I have a Vzw m7, I'm on vzw but my service is temporarily suspended, vzw tried saying I used 27 extra gb's of data even though I have records proving I only used 13 extra, BUT THEN even though I bit the bulletv and paid it off because I need service, then the NEXT month they triedb charging me AGAIN for that same extra "27" gb, needless to say this time I DIDN'T pay it.
Now, my service is suspended until I pay that off, but I started looking into prepaid, and I saw there's only a few official vzw prepaid phones, BUT, vzw prepaid offers a Universal vzw prepaid sim card that says it enables you to use any Verizon phone on the Vzw prepaid network. I believe it says its a nano-sim card, (and also comes with an adapter tray). It gives u the 1st month of unlimited txts + calls + 1gb of data... WhAt I'm wondering is, has anybody tried this, or know if it should work with the vZw m7? It says as long as It's inserted into an official vzw phone, it'll work, but I wanna make sure before I give those greedy vzw @$§h0£€:$ anymore $....
Does anybody have any input/knowledge about this? I don't know much about bands/frequencys etc., or how much that comes in to play.. any advice/input would be GREATLY appreciated
I am currently using a prepaid and all the services work just as if you had Verizon. All Verizon roms work.
IceAzures said:
I am currently using a prepaid and all the services work just as if you had Verizon. All Verizon roms work.
Click to expand...
Click to collapse
N u did it the way I described, with that vzw universal sim card?
bdizzle1686 said:
N u did it the way I described, with that vzw universal sim card?
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Click to collapse
As I understand it-- and I may not be entirely correct-- Verizon in the US uses a unique type of network that is almost exclusively LTE based. I'm sure the details are a bit more complicated, but this much I do know:
--All Verizon phones until very recently were CDMA devices
--All *new* Verizon phones are global/GSM devices.
And all of them work on the Verizon network with VZW SIM cards.. so I think you should be good
In regard to ROMs... if it's not an M7VZW, you should not try to use an M7VZW ROM. The parititions and radios etc are not the same. Even if you are using it on the VZW network, a GSM phone has to be flashed with GSM ROMs, and VZW branded M7s need to be flashed with M7VZW ROMs.
firejuggler86 said:
As I understand it-- and I may not be entirely correct-- Verizon in the US uses a unique type of network that is almost exclusively LTE based. I'm sure the details are a bit more complicated, but this much I do know:
--All Verizon phones until very recently were CDMA devices
--All *new* Verizon phones are global/GSM devices.
And all of them work on the Verizon network with VZW SIM cards.. so I think you should be good
In regard to ROMs... if it's not an M7VZW, you should not try to use an M7VZW ROM. The parititions and radios etc are not the same. Even if you are using it on the VZW network, a GSM phone has to be flashed with GSM ROMs, and VZW branded M7s need to be flashed with M7VZW ROMs.
Click to expand...
Click to collapse
Definitely an official Verizon m7 model, all latest firmware etc., and running @santod040 s NuSense7 ever Since he released it, just didn't know if the Verizon Prepaid Universal sim card would work or not, wanted to make sure before I gave anymore money to those greedy Verizon ppl lol. Thanks for the input!
bdizzle1686 said:
Definitely an official Verizon m7 model, all latest firmware etc., and running @santod040 s NuSense7 ever Since he released it, just didn't know if the Verizon Prepaid Universal sim card would work or not, wanted to make sure before I gave anymore money to those greedy Verizon ppl lol. Thanks for the input!
Click to expand...
Click to collapse
Yeah the one you buy at Walmart or even the Verizon store? It still uses the LTE on the device, all and all it works as if you had an actual
plan.
UPDATE:
Just so anyonewho may be interested in converting their VZW M7 to a VZW PREPAID , it DOES in fact work. Have been running on the vzw prepaid network almost a month now. Only drawbacks is now Verizon Visual Voicemail and Caller Name id don't work anymore, but oh well. All I had to do was buy the universal vzw prepaid sim card and insert it into my m7 and all is well. And in case anyone's wondering, it works rooted and on custom rom as well, as I'm rooted, bootloader unlocked and S-Off on NuSense7

In need of a lil guidance?

Ok so I need some advice. I was finally able to root my Galaxy S6 recently with Odin/CF-AutoRoot. Now i've got a few questions before I go any farther. The main reason I wanted to root my phone was in hopes to edit my APN's and get my data working. This galaxy is on Marshmallow, the Sprint/Boost Mobile model. I bought it off ebay, when i first got it I took it to AT&T to get service on it. They got my talk/text working but not data because there was no APN options under Settings/mobile networks/etc. That option was not there. I'm hoping if I flash a rom that will restore my missing APN options.
-I need someone to recommend me a rom. I'm looking for a stable rom, preferable debloated too. I just want the phone to function as it normally should and have the apn options back.
-Also, do I need to install a custom kernal too?
This is the forum for Sprint Galaxy S6. Did you buy the Sprint model or the AT&T model.
From what I understand, they are different.
Sprint is on CDMA network and AT&T is GSM, and the two are not compatible.
Sent from my SM-G920P using XDA-Developers mobile app
DarkHorse420 said:
Ok so I need some advice. I was finally able to root my Galaxy S6 recently with Odin/CF-AutoRoot. Now i've got a few questions before I go any farther. The main reason I wanted to root my phone was in hopes to edit my APN's and get my data working. This galaxy is on Marshmallow, the Sprint/Boost Mobile model. I bought it off ebay, when i first got it I took it to AT&T to get service on it. They got my talk/text working but not data because there was no APN options under Settings/mobile networks/etc. That option was not there. I'm hoping if I flash a rom that will restore my missing APN options.
-I need someone to recommend me a rom. I'm looking for a stable rom, preferable debloated too. I just want the phone to function as it normally should and have the apn options back.
-Also, do I need to install a custom kernal too?
Click to expand...
Click to collapse
It sounds to me like you want to use the Sprint S6 on AT&Ts network. Should be possible. However, I believe it needs to be unlocked first in order to use the GSM bands. This may be one of the issues.
Secondly, I recommend doing everything yourself as there aren't many ROMs available for the Sprint S6, so tweaking everything is something you personally will have to do to make it work on AT&T.
Thirdly, why did you get a Sprint model if you wanted to use it on AT&T? I recommend talking to sprint to help you. Custom kernel has nothing to do with carriers, so using the one you have now will be fine.
IMHO: You should have done your research first. Honestly if you wanted to use it strictly for AT&T then you should have bought an AT&T variant, all your headaches and issues wouldn't exist lol. That being said, what you want is 100% feasible, but not by the average Joe. It requires some tinkering and know how and knowing how to navigate around the device.
hotwired34 said:
This is the forum for Sprint Galaxy S6. Did you buy the Sprint model or the AT&T model.
From what I understand, they are different.
Sprint is on CDMA network and AT&T is GSM, and the two are not compatible.
Sent from my SM-G920P using XDA-Developers mobile app
Click to expand...
Click to collapse
Just an FYI: You are right, but you're not fully right. lol
Sprint and Verizon CDMA phones normally have GSM capabilities for overseas business travel. In order to unlock the GSM bands, you must get the device unlocked, or tell and pay sprint that you are using it overseas. International Unlocking allows for overseas use, Domestic unlocking allows for USA GSM Carrier use. My phone is International and Domestically unlocked thanks to a very kind and generous xda member.
However, a GSM phone will not work on CDMA networks, just cause they lack the hardware. There really isn't a niche for it so they don't make them.

SIM unlocked T-Mobile Z2 Force - on Verizon?

There are a ton of entries on XDA about sim unlocking the T-Mobile and Sprint versions of the Z2 force, but none of them confirm once unlocked if they've used it on Verizon.
T-Mobile's page confirms their version utilizes bands 2,4 and 13 - all of which are Verizon's LTE bands.
Can anyone confirm?
I'm looking to buy this to replace a work phone on Verizon. My personal account is with T-Mobile, so would be very nice if I could just flip sims whenever I'd like. Appreciate in advance the responses!
(unlock T-Mobile bootloader, sim unlock, root and put a custom rom with safety net passes)
then type this on google and try.
Unlock all bands of your Qualcomm device! Use your phone globally! No bs! by olokos
or this one
torial] Unlock ALL bands on xt907 (moto_msm8960) by umar_fia
both links you want are first ones on google
test and report back
unlock band 13 for lte
if possible
unlock band CDMA BC1 (1900 PCS) and CDMA BC0 (800)
if given an option for cdma protocols
activate
cdmaOne 2G
CDMA2000 1xRTT 3G
CDMA2000 1xEV-DO Rel. 0 3G
CDMA2000 1xEV-DO Rev A 3G
If you can't activate the cdma bands, you will have no 3g connection.
Oh if this works I would be so happy to switch back to VZW. Anyone attempted it yet?
I'm interested in knowing if anyone tried this too
I’m too chicken to mess with anything not official from xda on my daily driver. I’m sucking it up and waiting out the period for the device unlock app to ‘officially’ sim unlock and try. When that day comes, I’ll post here.
I think it’s ignorant having to wait for a sim unlock for a phone you bought outright.
joesee said:
I’m too chicken to mess with anything not official from xda on my daily driver. I’m sucking it up and waiting out the period for the device unlock app to ‘officially’ sim unlock and try. When that day comes, I’ll post here.
I think it’s ignorant having to wait for a sim unlock for a phone you bought outright.
Click to expand...
Click to collapse
Eagerly awaiting news on this - why is there a waiting period on the sim unlock? How longs is that period? I'm about to head out to Tmobile store and buy me one too.
Verizon's LTE band 13 is exclusive to the Verizon model unfortunately. I wish it wasn't so you could use a bootloader unlocked Sprint or T-Mobile edition on Verizon. I did that with the Google Pixel - used the universal one on Verizon. I just got used to having an unrooted phone with the z2 Force. I switched to blokada after many years of always using ad away. I think most all ad blockers on unrooted phones are VPN based so it lags WiFi and mobile data a little but that's what you get to work with if you want the best moto phone running on Verizon.
Greefus said:
Verizon's LTE band 13 is exclusive to the Verizon model unfortunately.
Click to expand...
Click to collapse
Could you provide your source of information on that? T-Mobile's listing of the Z2 Force lists band 13 LTE capability, and multiple sources say that the Sprint variant has band 13 too. I am just about to pull the trigger on a Z2 Force variant that is bootloader unlockable, but whichever carrier version I get has to work with Straight Talk Verizon.
I'm seeing the sprint one listed as having band 13 now everywhere actually. My bad. I don't recall seeing that back when i got it and was shopping around. Let me know if the Sprint one works for you on vz because i miss having a a rooted phone.
The only different thing on the US phone's is the oem partition. Everything else hardware and software are very similar to the point I want to say identical. (Obviously, some slight changes in /system and stuff but that's with the territory of using OEM ROMs). I have flashed a T-Mobile flashall and it worked. I flashed back to Sprint shortly after. I did it for science.
So in short, will am unlocked T-mobile Moto Z2 work on the Verizon network with a sim swap? Or does it require a root or the bootloader thing that was mentioned, I haven't done either one as I am content with factory.
So, what's the verdict? Will unlocked T-Mobile Z2 force work with Verizon?
Most likely will not work. T-Mobile variant is GSM and most likely doesn't have the CDMA bands on it or programmed into it. Only thing you can try is flash Verizon firmware and see if it works. 99% chance T-mobile firmware will not work, Verizon firmware has about a 40% chance of working. If you don't have the device, I'd suggest not investing as no one has tried it.
I tried the Verizon flash all on my TMobile z2. Didn't work.lost baseband.
The flash all looked as if everything flashed properly...but when it finished and rebooted it still had tmo splash screen. So I don't know if it really did it.
If it's worth any thing my Verizon Sim in my tmo z2 gets great data...just no calls/messages
I have an unlocked Sprint variant that I flashed to Verizon and use with Straight talk Verizon. The only issue is that so far whenever an update comes in I have to back up all the things I want to save and flash the updated flashall, because the automatic updater just keeps on failing. I don't know if this matters, but I'm bootloader unlocked (had to for sim unlock) but without TWRP or root. It's possible that if I would try relocking the bootloader that the automatic update process would work. I briefly had a Mint sim in there (T-mobile) and everything seemed to work. I didn't really try things out with the Sprint rom, but as I remember everything worked, I just didn't like the icon style plus always having a notification saying something about a non Sprint sim card
zstricky said:
I have an unlocked Sprint variant that I flashed to Verizon and use with Straight talk Verizon. The only issue is that so far whenever an update comes in I have to back up all the things I want to save and flash the updated flashall, because the automatic updater just keeps on failing. I don't know if this matters, but I'm bootloader unlocked (had to for sim unlock) but without TWRP or root. It's possible that if I would try relocking the bootloader that the automatic update process would work. I briefly had a Mint sim in there (T-mobile) and everything seemed to work. I didn't really try things out with the Sprint rom, but as I remember everything worked, I just didn't like the icon style plus always having a notification saying something about a non Sprint sim card
Click to expand...
Click to collapse
Was it officially unlocked or was a modified file flashed to your phone? If you had a third party service unlock, then the hash check for that partition is incorrect and that's why updates fail.
I had a third party unlock it. Actually, it was the guy that people on this forum have talked about.
Will this work on Verizon? My tmo z2 was unlocked by TMobile not a third party
No it doesn't work... You can get data but that's it..
Uzephi said:
The only different thing on the US phone's is the oem partition. Everything else hardware and software are very similar to the point I want to say identical. (Obviously, some slight changes in /system and stuff but that's with the territory of using OEM ROMs). I have flashed a T-Mobile flashall and it worked. I flashed back to Sprint shortly after. I did it for science.
Click to expand...
Click to collapse
Hi- I am wondering about being able to buy a new-in-the-box z2 Force that was originally sold for Sprint, and being able to flash the T-mobile firmware to it for use with them. Is this possible? I have done this for Galaxy S8/S9 phones, but there is a deal right now where I can get this phone with 2 of the mods for dirt cheap, but it won't really matter if I can't do the conversion. Any advice?

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