Make VZW GS3 work on other Carriers - Verizon Samsung Galaxy S III

Is this even possible. To make the phone work on cdma and hspa. or gsm what ever you call it

Yeah if you use a gsm sim card just download phone info app from play store and change the radio to GSM. only voice and text works with this easy method. read the entire thread below to make data work. HSPA+ works on at&t but only edge for t-mobile. most worldwide networks should work with 3G or HSPA but you have to enter in the right APN.
http://forum.xda-developers.com/showthread.php?t=1775566

I got it to work on sprint, but call and text only. No data, I couldn't get it to work.
Sent from my SPH-L710 using xda premium

Related

will unlocked captivate work on t-mobile's blackberry plan?

I have had no luck getting my Vibrant to work with my T-mobile blackberry plan. Phone works, but no data.
If I get a Captivate, unlock it, will it work with T-mobile's blackberry plan for data?
I don't care if it's just 2g and not 3g, I just want data...
I was told by AT&T that it wouldn't work because the data is provisioned differently. I wanted to keep my Bold 9000 for work and the Captivate for all other times and couldn't do it. I'll have to assume that T-Mobile also provisions their data differently.
At&t 3G runs off a completely different radio frequency so an at&t phone wont work on T-Mobile 3g. It will work with 2g and data provisions have nothing to do with it. Still a GSM network. Just get your unlock code for your sim and switch away
Sent from my SAMSUNG-SGH-I897 using XDA App
An unlocked Captivate will work on Tmobile but you will only get Edge for data.
There is a big draw back as these phone were never design with anythin less than 3G in mind. When ever I was using data (edge) all my voice call went straith to voice mail with no indications of any missed calls.
With Wifi it's fine. Even peoples with AT&T 3G have these problems when they travel to an area with only 2G coverage. Even a person in India told me the same thing with his Galaxy S.
Yeah with edge you cannot talk and use data at the same time. That's why when you're using data it will not allow calls to go through until the data stops transferring.
Sent from my SAMSUNG-SGH-I897 using XDA App

No Straight Talk 3G data? Works on my E71...

Hi All,
I have my unlocked SGS4G with a Straight Talk SIM inserted. I can make calls and send/receive texts, but I can't seem to connect to 3G data. By default, the SIM seems to have wap.cingular as the APN. This gives me no data at all. When I switch the APN to att.mvno I can get edge, but no 3G.
There are 2 kickers to this:
1. When I lived in TX I tried the same thing with someone else's straighttalk SIM and I got 3G no problem using the att.mvno APN.
2. When I have the ST SIM in my nokia E71 (also ST) I get fast 3G internet. (But when I pop it in the SGS4G the MAX I can get is edge).
Does anyone have an idea of how I can get the 3G working? I have tried using a few different APN settings with no luck, but at this point I will try just about anything you throw my way!
http://simplemobile.webs.com/index/Android Configuration/Android Configuration.html
Those should do it for you.
Sent from my SGH-T959V using XDA App
camalus said:
http://simplemobile.webs.com/index/Android Configuration/Android Configuration.html
Those should do it for you.
Sent from my SGH-T959V using XDA App
Click to expand...
Click to collapse
Thanks for the tip, but those APN settings result in no internet at all. I do have an active T-mobile account to use the SGS4G on currently, but it roams on ATT in my area. So I'm thinking that simple mobile isn't supported here.
Does anyone know the exact APN settings from a current Nokia e71 for straight talk? When I try to access them, the software tells me I don't have permission to view it.
Solved (I Think)
I think I have found why this won't work in my area, but PLEASE correct me if I am wrong!
It looks as if the SGS4G does not support 3G on 850 MHz while the nokia E71 does.
Apparently where I was living in TX, ATT was transmitting 3G over 1900 MHz which I could pick up, but now in NM ATT uses only 850 MHz 3G so I am SOL.
Now I'm assuming that this incompatibility is strictly a hardware issue, hence flashing new modem FWs will not work. Is this right?
Right. This phone doesn't support 3g over 850mz, only 1700/2100 and 1900. Only 2g at 850.
This is a hardware limitation so no ROM can change it.
Sent from my SGH-T959V using XDA App

Roaming on At&t or any other domestic carrier?

With the Jelly bean update I noticed it made my GS3 into a world phone, if I select Preferred network and set it to GSM/UMTS and select manual At&t and T-Mobile are displayed but I can't connect...I'm assuming because my phone isn't provisioned to be used on those. But is there anyway to make this phone roam on other networks...I thought that was the whole point of roaming? I don't care about data when roaming just voice.
If I'm not mistaken, in order to roam on their networks you need an AT&T or T-Mobile sim card. I've never tried nor do I remotely know how this works though.
Sent from my SCH-I535 using xda app-developers app

Fix for T-Mobile LTE?

Is there a workaround or any suggestions to get everything functional such as calls etc.
As of now only data works but you can't receive or send out messages,make calls etc.
When connected to H+ everything works flawlessly and the carrier shows, when connected to LTE only data works nothing else and the phone can't identify what carrier is being used.
Sent from my HTC6525LVW using Tapatalk
UPDATE:
The issue seems to be that Verizon by default is locking the GSM radio. Users are reporting the same in the Moto X and Droid Ultra forum. Users using 4.4.2 on T-Mobile with a Verizon device.
charlieb620 said:
Is there a workaround or any suggestions to get everything functional such as calls etc.
As of now only data works but you can't receive or send out messages,make calls etc.
When connected to H+ everything works flawlessly and the carrier shows, when connected to LTE only data works nothing else and the phone can't identify what carrier is being used.
Sent from my HTC6525LVW using Tapatalk
UPDATE:
The issue seems to be that Verizon by default is locking the GSM radio. Users are reporting the same in the Moto X and Droid Ultra forum. Users using 4.4.2 on T-Mobile with a Verizon device.
Click to expand...
Click to collapse
I thought verizon was forced to sim unlock all their lte devices?
123421342 said:
I thought verizon was forced to sim unlock all their lte devices?
Click to expand...
Click to collapse
They are SIM unlocked as I'm using one but it seems the band we need for LTE isn't playing well.
Sent from my HTC6525LVW using Tapatalk
Was curious if anyone else was having this issue. Any thoughts that it might be related to skipping Verizon activation? When I got the phone, wasn't activated and on first turn on it prompted activating Verizon Sim but I exited out and just popped in T-Mobile Sim.
charlieb620 said:
Is there a workaround or any suggestions to get everything functional such as calls etc.
As of now only data works but you can't receive or send out messages,make calls etc.
When connected to H+ everything works flawlessly and the carrier shows, when connected to LTE only data works nothing else and the phone can't identify what carrier is being used.
Sent from my HTC6525LVW using Tapatalk
UPDATE:
The issue seems to be that Verizon by default is locking the GSM radio. Users are reporting the same in the Moto X and Droid Ultra forum. Users using 4.4.2 on T-Mobile with a Verizon device.
Click to expand...
Click to collapse
levilib said:
AFAIK, LTE (unless the carrier is using voLTE) is a data only network. Verizon uses LTE for data and CDMA for calls and text.
Verizon seems to only allow GSM/UMTS or CDMA/LTE on the M8 at one time, there doesn't seem to be a true Global mode that allows GSM/UMTS and LTE to run at the same time.
That would explain why people are reporting either LTE or calls/texting (which, as above mentioned, only works on 2G/3G (be that CDMA or GSM))
The question is, is there a way to get around this? On the S3/S4 there was an app called phoneinfo which showed more modes than the Mobile Network settings menu. Is there such a thing for the M8?
This is quite disappointing news for me, since this is the first Verizon phone I'm aware of that has the 1800MHz LTE band, and that's the band used in Australia where I'm headed soon. I was excited about being able to finally use LTE there! I guess I'll have a choice between LTE and calls/text like all those in this thread using T-Mobile.
Click to expand...
Click to collapse
Thought I'd copy this here
http://www.htc.com/us/support/htc-one-verizon-wireless/howto/394092.html
Hoping the best that this would be the fix for the GSM
while you edit the data as well I believe
Will never get 4G LTE on any other carrier besides Verizon in the US. Never have. Never will. Those radio bands are blocked at chip level.
prdog1 said:
Will never get 4G LTE on any other carrier besides Verizon in the US. Never have. Never will. Those radio bands are blocked at chip level.
Click to expand...
Click to collapse
They got the M8 Lte work with T-Mobile but Calls and messages are not working while you have LTE
youtube.com/watch?v=oJwqFersSoo
must.sayim said:
They got the M8 Lte work with T-Mobile but Calls and messages are not working while you have LTE
youtube.com/watch?v=oJwqFersSoo
Click to expand...
Click to collapse
More than likely it is same as Verizon. Won't happen till they have voice and data both over AWS network. Currently on Verizon data is on LTE and voice is on CDMA. If can get into signal settings may be a way to lock the voice section in. It is not on LTE. Verizon has had the two linked since TBolt. Others have had a problem doing this. Has to be able to do dual band at same time. Also shouldn't get LTE at all if not in T-Mobile AWS area.
Unless T-Mobile rolls out voLTE and the M8 is compatible, the VZW M8 won't work for both call/sms and LTE data simultaneously. The other solution would be figuring out a new mode that allows LTE and GSM/UMTS to work together, maybe a software update will do that, but something tells me VZW isn't running to make our lives easier in this regard (Unless they start offering international 4G LTE roaming, then they'll have to fix this issue - and that might be on the horizon as this is the first VZW phone to have LTE bands that VZW doesn't use nor has any plans to use, such band 3 1800MHz)
Phone info
Sent from my HTC6525LVW using Tapatalk
Apparently phone info isn't helping...
Sent from my HTC6525LVW using Tapatalk

Advanced calling with att sim card?

Do I have to have a Verizon sim card to turn on advanced calling option? I can't get voice and data while on call. I'm using att sim
warriorpluto said:
Do I have to have a Verizon sim card to turn on advanced calling option? I can't get voice and data while on call. I'm using att sim
Click to expand...
Click to collapse
Try changing the network mode from global mode to LTE / GSM / UMTS. It worked for me and I'm using T-Mobile. If you are trying to do video calling I still havent figured that out yet. But at least you can have data while your on a call.
Advanced calling is only available on Verizon's network with a Verizon sim card.
I don't know if there is another way to enable simultaneous voice and data on a Verizon phone that is on another carrier, but I know Advanced Calling won't work.
Also for Verizon advanced calling only works when you have LTE connection.
Sent from my SM-N920V using Tapatalk
i wonder if there is a way to access the service menu to change the bands. this phone has more bands then what it is using right now. the marshmallow update made it a little better. i have 3g while calling. kinda slow though. i can tell you guys that there are absolutely no developers tinkering with the verizon version of the note 5 and s6 edge plus. i mean nobody. all the devs have left the scene. we are on our own for now until someone steps up. its true rather you want to believe it or not. this is the end for samsung phones on verizon.

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