Rom work with GSM sim without APN setting - Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot

I get international unlocked on S4... I have tried Domestic Unlocked and also tried CM 11 rom and then change the GSM only without any luck. Are there any way or any Rom can be work ??

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ROMS that allow dual boot between CDMA/LTE and GSM/tmo etc?

I was just wondering which roms allow for using a Verizon sim and a gsm domestic sim such as tmobile used with ease? If there are any does this mean that these roms have the radio edit in them ? Thanks !
cnotes2019 said:
I was just wondering which roms allow for using a Verizon sim and a gsm domestic sim such as tmobile used with ease? If there are any does this mean that these roms have the radio edit in them ? Thanks !
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Most of them should allow for it. I know dhacker29's latest CM10.1 and ParanoidAndroid builds work fine after making a small build.prop change and adding the APN that you need. The radio edit to enable domestic GSM support is done to the radio partition, not the system partition, so the ROM does not have anything to do with it. As long as you don't overwrite the radio partition by doing an OTA update, RSDLite restoration, etc., you will always have domestic GSM networks unlocked.
most of the aosp roms have a gsm fix for them, i use aokp with a net10 sim with no issue

Convert to i9500?

A friend of mine got a Sprint S4 but he wishes to use it with a GSM Carrier.
First couple things I noted are:
1) No SIM Card Contact Management, had to use an App to copy all to phone
2) Cannot find GSM APN settings to manually enter
Is it possible to flash a stock International i9500 ROM over this to alleviate the issues with using a mainly CDMA version?
Technoboi said:
A friend of mine got a Sprint S4 but he wishes to use it with a GSM Carrier.
First couple things I noted are:
1) No SIM Card Contact Management, had to use an App to copy all to phone
2) Cannot find GSM APN settings to manually enter
Is it possible to flash a stock International i9500 ROM over this to alleviate the issues with using a mainly CDMA version?
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I do not believe you can flash an international ROM to this phone unless you want a pretty paperweight. But there are some tutorials to unlock your SIM to be able to use on other carriers, here is where I'd start. However if he's on a Knox bootloader I think the chance is next to zero for using it on GSM because you have to 'go back' to MDC to do some required stuff.
If he wanted to use a gs4 on a GSM network he should have gotten a GSM version not a CDMA
Sent from my SPH-L720 using Tapatalk
It is actually already unlocked as he can use Voice etc just a bit tricky to get the APN settings to work for 3G...

[Q] Can I install a T-Mobile stock ROM on a AT&T unlocked version

Hey guys I need help... I got my wife an unlocked AT&T LG G2. I set up the APN setting and the LTE was working but as soon as I don't have a strong signal the phone drops to gsm and it doesn't give me the options to include other frequencies on settings. I worked with T-Mobile to fix the issue but they don't have a fix. I was adviced to flash a T-Mobile stock ROM is this possible if the build model is different?

[HELP] WCDMA Not Working On G530T1

Hello. I got a fairly used G530T1 MetroPCs. Calls and data works fine, only problem is 3G(WCDMA) won't work. If i change preferred network settings to WCDMA Only, the network signal goes off totally. I've flashed most stock ROMs and custom ROMs i can find here, but the problem still persists. The SIM works fine on other phones, so it is not the SIM card. I have tried other SIM cards too, still the same problem.
Anybody with a workaround or a fix should kindly help me out. Thanks
My G530T (T-Mobile) doesn't connect to 3G or 4G, only to LTE. I think that's just due to the hardware.
iamwhizkid said:
Hello. I got a fairly used G530T1 MetroPCs. Calls and data works fine, only problem is 3G(WCDMA) won't work. If i change preferred network settings to WCDMA Only, the network signal goes off totally. I've flashed most stock ROMs and custom ROMs i can find here, but the problem still persists. The SIM works fine on other phones, so it is not the SIM card. I have tried other SIM cards too, still the same problem.
Anybody with a workaround or a fix should kindly help me out. Thanks
Click to expand...
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ON PHONE
DIAL *#2263#
LTE Baseband Preferred
ALL
Turn on Airplane mode
Turn off
Violaa Worked 100000...% Tested by Sireal
iamwhizkid said:
Hello. I got a fairly used G530T1 MetroPCs. Calls and data works fine, only problem is 3G(WCDMA) won't work. If i change preferred network settings to WCDMA Only, the network signal goes off totally. I've flashed most stock ROMs and custom ROMs i can find here, but the problem still persists. The SIM works fine on other phones, so it is not the SIM card. I have tried other SIM cards too, still the same problem.
Anybody with a workaround or a fix should kindly help me out. Thanks
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I thought that the MetroPCS version didn't come with WCDMA support. Many devices only support GSM, and because this device was never meant to run on WCDMA networks (Metro is GSM only), you might not be able to have these bands. However, if this is not your main device, and the phone is unlocked, you could try flashing an odin file for another version of the Grand Prime. MAKE SURE that your grand prime has the same chipset as the file your flashing, as some grand prime devices have a different chipset. Also, you might have to use a patched version of odin, which is all over xda.

Sprint HTC 10 on T-Mobile?

Does the Sprint variant work with Ting GSM (essentially T-Mobile towers) if you SIM unlock it following the SIM unlock tutorials? Or would it require more than that? I looked on HTC's site and its shows the phone has all the same bands for the Sprint version and T-Mobile version. Does anyone have a Sprint version working with Ting or T-Mobile?
yadnom said:
Does the Sprint variant work with Ting GSM (essentially T-Mobile towers) if you SIM unlock it following the SIM unlock tutorials? Or would it require more than that? I looked on HTC's site and its shows the phone has all the same bands for the Sprint version and T-Mobile version. Does anyone have a Sprint version working with Ting or T-Mobile?
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I believe it does if you change your cid and flash it to the unlocked firmware. There are threads everywhere on how to do this, make sure to check the un-carrier branded HTC 10 xda site.
yadnom said:
Does the Sprint variant work with Ting GSM (essentially T-Mobile towers) if you SIM unlock it following the SIM unlock tutorials? Or would it require more than that? I looked on HTC's site and its shows the phone has all the same bands for the Sprint version and T-Mobile version. Does anyone have a Sprint version working with Ting or T-Mobile?
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I run a Sprint device on T-Mobile. Works perfect with the exception of WiFI Calling which I am currently trying to get working.
Simple way is to unlock SIM NV method, load custom recovery, load latest Viper ROM, on AROMA pick the proper base install MM or N and Choose T-Mobile for carrier and that's really it man. the LTE bands are already all there, reason why I say Viper after the unlock is because other people including me had trouble getting data to work on stock Sprint MM. Flashing Viper solved that beautifully.
jblparisi said:
I run a Sprint device on T-Mobile. Works perfect with the exception of WiFI Calling which I am currently trying to get working.
Simple way is to unlock SIM NV method, load custom recovery, load latest Viper ROM, on AROMA pick the proper base install MM or N and Choose T-Mobile for carrier and that's really it man. the LTE bands are already all there, reason why I say Viper after the unlock is because other people including me had trouble getting data to work on stock Sprint MM. Flashing Viper solved that beautifully.
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Thanks!
yadnom said:
Thanks!
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The only thing that sucks is you will be missing WiFi Calling which to me was a little annoying. I have tried everything, I went as far as S-OFF (kinda of a waste of $25) installed multiple firmwares (T-Mobile stock with Sprint radio, etc), different rom's, so far nothing, it seems tied to the actual us unlocked/t-mobile radio which as we know isn't compatible with the Sprint variant. On the plus everything else works including VoLTE.
jblparisi said:
The only thing that sucks is you will be missing WiFi Calling which to me was a little annoying. I have tried everything, I went as far as S-OFF (kinda of a waste of $25) installed multiple firmwares (T-Mobile stock with Sprint radio, etc), different rom's, so far nothing, it seems tied to the actual us unlocked/t-mobile radio which as we know isn't compatible with the Sprint variant. On the plus everything else works including VoLTE.
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If you ever figured out Wi-Fi calling on the Sprint HTC 10 for T-Mobile, do you remember how and can you tell me?

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