Database Develop

[Q] no 4g or lte on stock or custom rom

So I've had this phone for almost a week now and I used to he able to get 4g LTE. But ever since I rooted it, I no longer get more than 3g. I now have bananacakes Holiraider 1.6 but I still don't get any higher than 3g. So my question is how do I get 4g and 4g lte. Oh and if anyone is using that custom Rom, is it possible to get faster than 1512? In his thread it shows you can clock it to 1566. Thanks a bunch I'm kinda new to this!

try dialing *#*#4636#*#* and see what your modem is set to, it should be GSM/WCDMA/LTE auto
you also may have an APN issue, verifiy that your APN is correct, perhaps contact your carrier for the correct APN settings for you phone and plan.

Well I'm now running a custom ROM. The apn is the same as other users and it does say the above. And yes I am in a 4G LTE area
Sent from my HTC Raider X710e using XDA App

Try doing the above and change to LTE only.
Then once you have 4G change it back. It should stay on 4G. I had to do this to get 4G on official rom.

Ok I just tried that but it wouldn't let me to switch it to LTE only. When I did, it switched it back to GSM/WCDMA/LTE auto. I'm just gonna relock my phone and set it back to the original stock rom and format my phone (yes I have the apps and stuff backed up). Because my actual mobile connection fluctuates on and off as well

the phone should be locked into the GSM/WCDMA/LTE setting. If you try to change it from that setting it just returns back. The phone will get instructions from the carrier's base station to tell it whether to be on LTE or just 4G/3G. Using *#*#4636#*#* under phone information, what is listed as the Network type?
bangorang said:
Ok I just tried that but it wouldn't let me to switch it to LTE only. When I did, it switched it back to GSM/WCDMA/LTE auto. I'm just gonna relock my phone and set it back to the original stock rom and format my phone (yes I have the apps and stuff backed up). Because my actual mobile connection fluctuates on and off as well
Click to expand...
Click to collapse

It is locked in GSM/WCDM/LTE auto.

above that option it should tell you the network type. it is about half way between the "run ping test" button and the "Set Preferred Network type" option. Need to know what it says there.

Oh ok I see what you mean, it says HSDPA

make sure that you are in a active LTE area. toggle the radio off and on. the network type should change to LTE if it is available. remember that if you make a phone call your phone will drop back to just 4g/3g and it might take a second for it to switch back to LTE.

I live in Los Angeles so I'm like in the center of the LTE center in Southern California. But for some reason my phone won't get anything higher than 3G, and my actual cellphone reception toggles on and off randomly too.

It worked before. For the first 3 days atleast. And now all of the sudden it wouldn't work, so I rooted it and installed a custom ROM

Try one of WildChilds custom ROMS. LTE works on both and they're tailored to US users.
Sent from my HTC PH39100 using xda premium

if the problem arised before you rooted and rom'd the phone I doubt the rom is the problem. there is always the chance that you have a bad radio.

rft3ch said:
if the problem arised before you rooted and rom'd the phone I doubt the rom is the problem. there is always the chance that you have a bad radio.
Click to expand...
Click to collapse
That's what I'm thinking... What would I do about this?

i would verify your sim with another 4gLTE phone and vice versa.

Hrm... So it could be a Sim card problem eh? Unfortunately there are no other LTE devices for me to get a hold of... Would this be the only way?

it could be. i hope you have pulled battery/sim and then rebooted already. you can verify your phone with a known good sim and verify your sim with a known good phone. I would try your local at&t store. they might be able to help.
bangorang said:
Hrm... So it could be a Sim card problem eh? Unfortunately there are no other LTE devices for me to get a hold of... Would this be the only way?
Click to expand...
Click to collapse

rft3ch said:
it could be. i hope you have pulled battery/sim and then rebooted already. you can verify your phone with a known good sim and verify your sim with a known good phone. I would try your local at&t store. they might be able to help.
Click to expand...
Click to collapse
I have done it many times . Yeah I'm actually going to head over to the at&t store in a few minutes, I'll keep you posted. Thank you so much for your help! rft3ch!

I will be replacing my phone. I replaced the sim card and that wasn't the problem . The rep said that someone else came in with the same problem as well.

Unlocked HTC One Having AT&T LTE Issues

Hey everyone I just bought an unlocked HTC One and switched the SIM card from my iPhone 5 into the new phone. I unlocked the bootloader, rooted it, and installed ARHD Sense version and I am having problems with the phone getting LTE. No matter where I am, I am unable to acquire LTE on the phone. Even in places where I know for sure that it has LTE (due to getting it previously on my iPhone) I'm stuck on HSPA+. Anyone have any ideas what the problem might be? Faulty device maybe? Would rather not have to send the phone back. I have tried also changing the APN, which changed nothing.

brandenk0 said:
Hey everyone I just bought an unlocked HTC One and switched the SIM card from my iPhone 5 into the new phone. I unlocked the bootloader, rooted it, and installed ARHD Sense version and I am having problems with the phone getting LTE. No matter where I am, I am unable to acquire LTE on the phone. Even in places where I know for sure that it has LTE (due to getting it previously on my iPhone) I'm stuck on HSPA+. Anyone have any ideas what the problem might be? Faulty device maybe? Would rather not have to send the phone back. I have tried also changing the APN, which changed nothing.
Click to expand...
Click to collapse
Do you have LTE turned on? You should be on LTE/GSM/WDCMA under Network Mode in settings. Wording may very depending on your ROM.

Yeah I have Lte enabled, which is why I'm confused as to why lte is not working.
Sent from my HTC One using Tapatalk 4

My best guess... Consider calling AT&T and switching off the iPhone data plan to a "smartphone" data plan. I don't know the differences between the 2 but it could be effecting your ability to connect to lte from the one.

viperlox said:
My best guess... Consider calling AT&T and switching off the iPhone data plan to a "smartphone" data plan. I don't know the differences between the 2 but it could be effecting your ability to connect to lte from the one.
Click to expand...
Click to collapse
Hmm I've been considering it just I have seen other people just pop their iPhone 5 SIM into an unlocked/developer edition HTC One and have full LTE connectivity, and not to mention the fact that dealing with AT&T is a pain.

brandenk0 said:
Hmm I've been considering it just I have seen other people just pop their iPhone 5 SIM into an unlocked/dev edition the fact that dealing with AT&T is a pain.
Click to expand...
Click to collapse
I know what ya mean... You could also try flashing at&ts latest radio... It probably only really effects AT&T based roms but it's supposed to open up some new lte bands. I used the link from post 95. http://forum.xda-developers.com/showthread.php?t=2325564&page=10 just make sure you grab the right one installing the one for cm 10 on a sense Rom will mess up your signal strength because it replaces some ril files while flashing the radio. It's a shot in the dark but wont hurt to try.

viperlox said:
My best guess... Consider calling AT&T and switching off the iPhone data plan to a "smartphone" data plan. I don't know the differences between the 2 but it could be effecting your ability to connect to lte from the one.
Click to expand...
Click to collapse
That actually used to be a really common problem, but they seem to use the same data plans for all smartphones now. Still, might be worth a try.

brandenk0 said:
Hey everyone I just bought an unlocked HTC One and switched the SIM card from my iPhone 5 into the new phone. I unlocked the bootloader, rooted it, and installed ARHD Sense version and I am having problems with the phone getting LTE. No matter where I am, I am unable to acquire LTE on the phone. Even in places where I know for sure that it has LTE (due to getting it previously on my iPhone) I'm stuck on HSPA+. Anyone have any ideas what the problem might be? Faulty device maybe? Would rather not have to send the phone back. I have tried also changing the APN, which changed nothing.
Click to expand...
Click to collapse
dial *#*#4636#*#*
click phone info
scroll down
click above "Radio Button"
choose "LTE Only"
reboot device
if didnt work choose "LTE CDMA"
if didnt work
flash another Radio (newer or older)
if didnt work take to to AT&T

Muhammad.Muayad said:
dial *#*#4636#*#*
click phone info
scroll down
click above "Radio Button"
choose "LTE Only"
reboot device
if didnt work choose "LTE CDMA"
if didnt work
flash another Radio (newer or older)
if didnt work take to to AT&T
Click to expand...
Click to collapse
Thanks will try that out soon. Also, to the person above, tried flashing an AT&T radio, which didn't help anything, but was worth the shot. Thanks for the help guys.
EDIT: So tried out switching it to LTE Only and it wouldn't let the setting stick. It would automatically change the preferred network type back to what it was whenever selecting LTE Only. Also, the LTE, CDMA option did not change anything. Again thanks for the help, I'm just going to send it back and hope for the best with a new device.

LG G4 Sprint SIM / Network unlock

Has anyone been able to SIM / network unlock Sprint variant of LG G4? For international use? for domestic carriers?
The phone appears to be locked. I tried putting GSM micro SIM and putting phone in to GSM mode. Got an icon about invalid SIM in notification tray. But no prompt to unlock. Also no menu in settings to unlock via network like my note 3 had. Even worse, no menu to select GSM Network operator in the settings.

leond said:
Has anyone been able to SIM / network unlock Sprint variant of LG G4? For international use? for domestic carriers?
The phone appears to be locked. I tried putting GSM micro SIM and putting phone in to GSM mode. Got an icon about invalid SIM in notification tray. But no prompt to unlock. Also no menu in settings to unlock via network like my note 3 had. Even worse, no menu to select GSM Network operator in the settings.
Click to expand...
Click to collapse
if you are in US i think you can call sprint and they will unlock your phone for free.

elmy2424 said:
if you are in US i think you can call sprint and they will unlock your phone for free.
Click to expand...
Click to collapse
I know , that is the theory, I am curious if anybody actually tried it. I am concerned about the fact that I don't see a menu to select GSM network, which was there in Note 3
it almost looks like the phone can roam on GSM network using Sprint SIM, but all the menus that would allow presence of different SIM where removed.

leond said:
I know , that is the theory, I am curious if anybody actually tried it. I am concerned about the fact that I don't see a menu to select GSM network, which was there in Note 3
it almost looks like the phone can roam on GSM network using Sprint SIM, but all the menus that would allow presence of different SIM where removed.
Click to expand...
Click to collapse
that option is just hidden, when someone get the phone unlocked the option in the menu will be enabled, are you inside USA

I did try a Simple Mobile Sim and it worked just fine. Have you tried any of the movs from Att or Tmobile??
Sent from my SM-G900V using XDA Free mobile app

bump...anyone

Google~Android said:
bump...anyone
Click to expand...
Click to collapse
Friend called Sprint and they unlocked his phone OTA. Now when non-sprint SIM is inserted it no longer complains about invalid SIM, however it will not connect to any networks in USA and still no way to see a list of networks or do a manual selection of network. That menu is still missing. I suspect the phone will now work outside of the USA in automatic network selection mode only, which may not be a good thing some times.

leond said:
Friend called Sprint and they unlocked his phone OTA. Now when non-sprint SIM is inserted it no longer complains about invalid SIM, however it will not connect to any networks in USA and still no way to see a list of networks or do a manual selection of network. That menu is still missing. I suspect the phone will now work outside of the USA in automatic network selection mode only, which may not be a good thing some times.
Click to expand...
Click to collapse
Ive got a really smart friend working on it... Im positive he'll get it done.. Jt matter of patience now...

Google~Android said:
Ive got a really smart friend working on it... Im positive he'll get it done.. Jt matter of patience now...
Click to expand...
Click to collapse
Doesn't matter what you try, you cannot use Sprint's phone on AT&T T-mobile here or any US GSM carriers. When sprint unlocks it for you, then you can use it outside of US on GSM Networks.

chirayu said:
Doesn't matter what you try, you cannot use Sprint's phone on AT&T T-mobile here or any US GSM carriers. When sprint unlocks it for you, then you can use it outside of US on GSM Networks.
Click to expand...
Click to collapse
You must be new here. Domestic gsm has been unlocked on most modern Sprint smart phones. Just in the years I've been with Sprint ive unlocked the Moto Q, G2, S4, and now the G3 for ATT and straight talk. Ive read of several others having the same ability. The s5 can also be unlocked but only one guy knows how but you gotta pay him for it. Kinda ****ty but it actually works.
Sent from my LGLS991 using Tapatalk

just get shortcut master (lite)
click the 3 dots in the upper right, click secret code explorer, click system apps and there are a few ATT hidden menus in there.
now no clue if they do anything.

chirayu said:
Doesn't matter what you try, you cannot use Sprint's phone on AT&T T-mobile here or any US GSM carriers. When sprint unlocks it for you, then you can use it outside of US on GSM Networks.
Click to expand...
Click to collapse
You didnt listen... Sprint phone works 100% for att.. They jt blocks it at the software level... But my friends has unlocked all the newer sprint phones till now.. I dont see why he shudnt be able to do it here

Any chances of unlocking when outside US? I got my phone from Amazon and got it shipped in my country. Tried calling them but they said they only unlock activated phones. Also tried various sites that offer unlock codes but since G4 is not asking for unlock code, they can't do anything.
Do I have any other options?

For those still trying to unlock, I've followed this post for unlocking the G3.
http://forum.xda-developers.com/sprint-lg-g3/general/sim-unlocking-ls990-zv8-t3083567
And I can now accept calls, will try it out some other time if I can get data as well.
Note: Make sure you have the correct permissions on the files that you'll copy.

ijball said:
For those still trying to unlock, I've followed this post for unlocking the G3.
http://forum.xda-developers.com/sprint-lg-g3/general/sim-unlocking-ls990-zv8-t3083567
And I can now accept calls, will try it out some other time if I can get data as well.
Note: Make sure you have the correct permissions on the files that you'll copy.
Click to expand...
Click to collapse
will this work for at&t?? on just international?

Google~Android said:
will this work for at&t?? on just international?
Click to expand...
Click to collapse
I can't confirm, since I don't have access to any AT&T SIM at the moment. If you're already rooted, you can try it out, but make sure to back up the files.
Another update: After updating the APN, my data finally worked. LTE is impossible at the moment since the this doesn't support the LTE bands here in my country
Warning: Don't try to disable auto activation for now. I got the Security Error and still on the process of fixing it.

ijball said:
For those still trying to unlock, I've followed this post for unlocking the G3.
http://forum.xda-developers.com/sprint-lg-g3/general/sim-unlocking-ls990-zv8-t3083567
And I can now accept calls, will try it out some other time if I can get data as well.
Note: Make sure you have the correct permissions on the files that you'll copy.
Click to expand...
Click to collapse
In the us or internationally?

clockcycle said:
In the us or internationally?
Click to expand...
Click to collapse
Internationally.

!!!!! i got it working on at&t!!! calling and sms work..I dont have data so i can't test that...ending a call gives issues as it hangs there for a bit!!!

I have the Sprint LG G4
I also got the unlock code from Sprint. But I can't get the phone to ask for the unlock code. Any hints. Can I force it to ask?

Can I turn my HTC Desire 510 CDMA (Sprint) phone into a GSM?

I have this HTC Desire 510 Sprint Phone, it has the SIM slot but in they said me that is only for the G4 connection.
Thanks in advance

necropersa said:
I have this HTC Desire 510 Sprint Phone, it has the SIM slot but in they said me that is only for the G4 connection.
Thanks in advance
Click to expand...
Click to collapse
tap phone and open the dialing pad an hit *#*#4636#*#* then tap Phone information and scroll down to "set preferred network type" in there you'll find a way to switch to LTE/GSM but I don't know if it will work unless the phone is S-off or already carrier unlocked.

Hi! thank for the responce.
My phone carrier is unlocked, i do what you said, then restar the phone, then put the SIM pin and a pop up message appear "Unlocking SIM" wait for 30 minuts and nothing happens, the little popup window remains there, the only way to take it off is pulling off the SIM.

necropersa said:
Hi! thank for the responce.
My phone carrier is unlocked, i do what you said, then restar the phone, then put the SIM pin and a pop up message appear "Unlocking SIM" wait for 30 minuts and nothing happens, the little popup window remains there, the only way to take it off is pulling off the SIM.
Click to expand...
Click to collapse
Because the phone is not truly sim unlocked.

MrMike2182 said:
Because the phone is not truly sim unlocked.
Click to expand...
Click to collapse
Where can i officially confirm that info? The phone has the SIM slot.

necropersa said:
Where can i officially confirm that info? The phone has the SIM slot.
Click to expand...
Click to collapse
So does mine and it's also CDMA and from what I know the CDMA phones cannot be unlocked from the carrier to use another network and the only one cable of doing that is the GSM phone not the CDMA ones. So mines still locked to Sprint and I'm s-off too.

MrMike2182 said:
So does mine and it's also CDMA and from what I know the CDMA phones cannot be unlocked from the carrier to use another network and the only one cable of doing that is the GSM phone not the CDMA ones. So mines still locked to Sprint and I'm s-off too.
Click to expand...
Click to collapse
how to get s-off on desire 510? thank you

ajmdve said:
how to get s-off on desire 510? thank you
Click to expand...
Click to collapse
If you want to get s-off, and your phone is 32 bit and NOT 64 bit, you can go to the website ---> The Root Ninja and download the app called Sunshine that @jcase made specifically for obtaining s-off. After you get your one time, one use license, if you need help with it you can either talk to @jcase or if he's not available you can come back here and I'll help you out. If your phone is 64 bit don't bother even trying to s-off it's not going to work with Sunshine and don't bother @jcase about it working for 64 bit because it doesn't and won't.

MrMike2182 said:
If you want to get s-off, and your phone is 32 bit and NOT 64 bit, you can go to the website ---> The Root Ninja and download the app called Sunshine that @jcase made specifically for obtaining s-off. After you get your one time, one use license, if you need help with it you can either talk to @jcase or if he's not available you can come back here and I'll help you out. If your phone is 64 bit don't bother even trying to s-off it's not going to work with Sunshine and don't bother @jcase about it working for 64 bit because it doesn't and won't.
Click to expand...
Click to collapse
thank you very much, just to be sure, do i have to be in the stock rom or s-off can be achieved on any rom?
oh, and maybe someone in here knows to to get gsm networks on the virgin mobile 510? i have sim unlucked the phone but it doesnt get any signal. i live in latin america.
thank you
PD: nevermid about s-off because i cant pay 25 to do it. but thank you anyway

ajmdve said:
thank you very much, just to be sure, do i have to be in the stock rom or s-off can be achieved on any rom?
oh, and maybe someone in here knows to to get gsm networks on the virgin mobile 510? i have sim unlucked the phone but it doesnt get any signal. i live in latin america.
thank you
PD: nevermid about s-off because i cant pay 25 to do it. but thank you anyway
Click to expand...
Click to collapse
If you're not in USA then it doesn't matter because you're phone is most likely 64 bit since only 32 bit is sold in USA. If you're sim unlocked already there might be a way to get GSM to work so try this... Open the phones dialing pad and enter code *#*#4636#*#* and then tap Phone Information and then scroll down to "Set preferred network type" and select LTE/GSM auto (PRL) and then see if you can get it to work. But you'll most likely need your service providers APN (Access Point Name) and you'll have to set it up in the phones Settings in Network.

MrMike2182 said:
If you're not in USA then it doesn't matter because you're phone is most likely 64 bit since only 32 bit is sold in USA. If you're sim unlocked already there might be a way to get GSM to work so try this... Open the phones dialing pad and enter code *#*#4636#*#* and then tap Phone Information and then scroll down to "Set preferred network type" and select LTE/GSM auto (PRL) and then see if you can get it to work. But you'll most likely need your service providers APN (Access Point Name) and you'll have to set it up in the phones Settings in Network.
Click to expand...
Click to collapse
no, my phone is a virgin mobile (from sprint) i have tried the 4636 menu but with no luck, the phone only allows me to change to some of the options like LTE only, LTE CDMA, LTE WCDMA, CDMA EVDO GSM WCDMA LTE AUTO, GSM WCDMA LTE AUTO, GSM WCDMA, CDMA + LTE EVDO AUTO, and others and with any it doesnt wrabs signal. any of the gsm ones should do the trick but none does it.
and when i try to auto connect to network show that my simcard dont allow connection to this network and i tried 2 working sims with the same result
View attachment 3558377
View attachment 3558378
View attachment 3558379

ajmdve said:
no, my phone is a virgin mobile (from sprint) i have tried the 4636 menu but with no luck, the phone only allows me to change to some of the options like LTE only, LTE CDMA, LTE WCDMA, CDMA EVDO GSM WCDMA LTE AUTO, GSM WCDMA LTE AUTO, GSM WCDMA, CDMA + LTE EVDO AUTO, and others and with any it doesnt wrabs signal. any of the gsm ones should do the trick but none does it.
and when i try to auto connect to network show that my simcard dont allow connection to this network and i tried 2 working sims with the same result
View attachment 3558377
View attachment 3558378
View attachment 3558379
Click to expand...
Click to collapse
I've tried to tell a lot of people that there's no way to get a CDMA Virgin Mobile brand phone to work on GSM Networks, it's impossible and no one bothers to listen to me so I don't tell people to not try anymore I just try to support what they want to do. It's never going to work but you can keep trying and if you find a way to get it to work post the solution here.

MrMike2182 said:
I've tried to tell a lot of people that there's no way to get a CDMA Virgin Mobile brand phone to work on GSM Networks, it's impossible and no one bothers to listen to me so I don't tell people to not try anymore I just try to support what they want to do. It's never going to work but you can keep trying and if you find a way to get it to work post the solution here.
Click to expand...
Click to collapse
ok, but how are you so sure?
the htc one m7 and the m8 from sprint can be used on gsm being cdma phones in first place, in fact i do own a htc one m8 from sprint that i succesfully unlocked and use it right now with a gsm network in my country.
also i do remember that other cdma/gsm phones like the htc pro 2 was capable to work on either network.
maybe something is still missing and we havent done all to achieve succes. ill keep try before selling the desire like this

ajmdve said:
ok, but how are you so sure?
the htc one m7 and the m8 from sprint can be used on gsm being cdma phones in first place, in fact i do own a htc one m8 from sprint that i succesfully unlocked and use it right now with a gsm network in my country.
also i do remember that other cdma/gsm phones like the htc pro 2 was capable to work on either network.
maybe something is still missing and we havent done all to achieve succes. ill keep try before selling the desire like this
Click to expand...
Click to collapse
Because Virgin Mobile purposely made it that way so that it can never be used with any other carrier but them... I know this because I have gone out of the Country a lot because I'm in the Military and when I asked VM to unlock the SIM card they said they cannot unlock it because even if they did it's never going to work with another SIM/Carrier and believe me I tried and tried while I was in Afghanistan and I eventually just gave up and bought a small stupid flip phone to use while over there instead. But like I said, you can keep trying. I'm not trying to tell you not to try because you might find a way when I couldn't.

MrMike2182 said:
Because Virgin Mobile purposely made it that way so that it can never be used with any other carrier but them... I know this because I have gone out of the Country a lot because I'm in the Military and when I asked VM to unlock the SIM card they said they cannot unlock it because even if they did it's never going to work with another SIM/Carrier and believe me I tried and tried while I was in Afghanistan and I eventually just gave up and bought a small stupid flip phone to use while over there instead. But like I said, you can keep trying. I'm not trying to tell you not to try because you might find a way when I couldn't.
Click to expand...
Click to collapse
ok, well look at this, it may worth to try
http://www.internauta37.altervista.org/it/patch-abilitare-completamente-il-gsm-sui-telefoni-cdma-globali-con-android

hello,
we had a discussion about it in other thread. people tried it, soffed 510, and tried all the way. i have sprint, virgin, boost 510 sim unlocked. i am using it with other cdma carrier with evdo working. i even tried it setting to gsm, but it doesnt works. i tried adding gsm bands via dfs tool too, but still it doesnt work. igsm bands are locked in radio or radio doesnt have support for it. We need a gsm 510 radio to work on it. if someone have a knowledge uptill radio level, who can patch radio of 510 then it may work..
but @MrMike2182 is right too.. lol , but we never know... like sprint htc m9... people thought its impossible to unlock, but now you can sim unlock it ..

stevestone said:
hello,
we had a discussion about it in other thread. people tried it, soffed 510, and tried all the way. i have sprint, virgin, boost 510 sim unlocked. i am using it with other cdma carrier with evdo working. i even tried it setting to gsm, but it doesnt works. i tried adding gsm bands via dfs tool too, but still it doesnt work. igsm bands are locked in radio or radio doesnt have support for it. We need a gsm 510 radio to work on it. if someone have a knowledge uptill radio level, who can patch radio of 510 then it may work..
but @MrMike2182 is right too.. lol , but we never know... like sprint htc m9... people thought its impossible to unlock, but now you can sim unlock it ..
Click to expand...
Click to collapse
im begginning to suspect that the lower level devices the issue is that the hardware is acutially different. flagship phones are not made with many different variants,so the simlock and profile are controlled via software and thus able to be "unlocked"
ive gotten a sprint one max to work on gsm,but tried alot of different things trying to get a virgin mobile desire 816 to work with zero success. the fact that folks to use these phones on other cdma networks does indicate they are no longer sim locked.
cheaper phones like this the best advice is to sell it off and just get a gsm version. there are plenty out there that will work without the hassle.

scotty1223 said:
im begginning to suspect that the lower level devices the issue is that the hardware is acutially different. flagship phones are not made with many different variants,so the simlock and profile are controlled via software and thus able to be "unlocked"
ive gotten a sprint one max to work on gsm,but tried alot of different things trying to get a virgin mobile desire 816 to work with zero success. the fact that folks to use these phones on other cdma networks does indicate they are no longer sim locked.
cheaper phones like this the best advice is to sell it off and just get a gsm version. there are plenty out there that will work without the hassle.
Click to expand...
Click to collapse
Trust me I've done everything under the sun to get this sucker to work on GSM and it won't do it... When Virgin Mobile refused to SIM unlock it saying it cannot be unlocked I got pissed and S-off'ed the phone and it works with other CDMA carriers but it just won't work with GSM but I was thinking it may have something to do with the radio but I don't want to mess around with that just yet because that'll brick it for sure if I get it wrong..

scotty1223 said:
im begginning to suspect that the lower level devices the issue is that the hardware is acutially different. flagship phones are not made with many different variants,so the simlock and profile are controlled via software and thus able to be "unlocked"
ive gotten a sprint one max to work on gsm,but tried alot of different things trying to get a virgin mobile desire 816 to work with zero success. the fact that folks to use these phones on other cdma networks does indicate they are no longer sim locked.
cheaper phones like this the best advice is to sell it off and just get a gsm version. there are plenty out there that will work without the hassle.
Click to expand...
Click to collapse
true. lower end devices, dont have capabilities. i used htc one max sprint on gsm , it works on cdma with nv and also on simcard. m7 also works that way, but to make it work with other cdma sim, we have patched radio for m7, it was realased on some chinese forum, later posted by someone on xda. Htc one m8 sprint, verizon works best. works on gsm, works on cdma sim, works on nv too with other providers, you dont even need to touch radio.. i even relocked and got latest ota. still it works best with all. truly world phone..

SM920P Can't establish wireless data connection troubleshooting

Hi guys,
I bought a SM920P Note 5 (Sprint) in , I could use 3G at VietNam without any problems but when I arrive at Japan, I can't use 3G anymore, only ordinary phone calls and SMS. The phone keeps alerting this error : lte:esm - 29 emm - x unable to stablish a wireless data connection.
I have entered the APN setting of the carrier. I tried to put the SIM into another phone and it works without problems.
In the settings>more>about device>status : the networks says HSPDA. So I changed the Bearer in the APN setting to HSPDA but still no luck !
My OS now is Nougat, and I don't think the phone is rooted because I'm receiving auto updates.
Does anyone know how to troubleshoot this problem?
Forgive me if there were missing information, just ask me and I will provide, sorry I'm not very "technical" !

hoangnnm said:
Hi guys,
I bought a SM920P Note 5 (Sprint) in , I could use 3G at VietNam without any problems but when I arrive at Japan, I can't use 3G anymore, only ordinary phone calls and SMS. "technical" !
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Give this a try.
http://rental.cdjapan.co.jp/contents/en_JPY/SETUP

CodeNameRedNeck said:
Give this a try.]
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Thanks for the reply.
I only have 4 mode in my network mode :
- CDMA
- LTE/CDMA
- GSM/UTMS
- Automatic
If I chose CDMA or LTE/CDMA there won't be any signal at all, the working options are GSM/UTMS and Automatic which I assume is the GSM/UTMS itselft.
Any ideas ??

hoangnnm said:
Thanks for the reply.
I only have 4 mode in my network mode :
- CDMA
- LTE/CDMA
- GSM/UTMS
- Automatic
Any ideas ??
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Did you get Sprint to unlock your phone for a different carrier before you left? Those APN settings have to be set exactly right and you must save it. Once you change your network mode it may take a bit to get signal.

CodeNameRedNeck said:
Did you get Sprint to unlock your phone for a different carrier before you left? Those APN settings have to be set exactly right and you must save it. Once you change your network mode it may take a bit to get signal.
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No, unfortunately I bought the phone in Vietnam, are there other ways to solve this? Like rooting the device and make some system changes?

hoangnnm said:
No, unfortunately I bought the phone in Vietnam, are there other ways to solve this? Like rooting the device and make some system changes?
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I do not know if rooting it would do you any good. I am not sure if changing the firmware would allow you to change carriers. I am not even positive that's the problem. Did it ask for some kind of code after you inserted the new SIM?
Is it a data only SIM? I think it needs to be a data only SIM being a CDMA phone.

CodeNameRedNeck said:
I do not know if rooting it would do you any good. I am not sure if changing the firmware would allow you to change carriers. I am not even positive that's the problem. Did it ask for some kind of code after you inserted the new SIM?
Is it a data only SIM? I think it needs to be a data only SIM being a CDMA phone.
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Hi RedNeck, sorry for the late reply.
No it did not ask for any code when I inserting the SIM, the SIM is capable of Call and SMS.

hoangnnm said:
Hi RedNeck, sorry for the late reply.
No it did not ask for any code when I inserting the SIM, the SIM is capable of Call and SMS.
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No problem. I could be wrong but I am pretty sure your Sprint phone is CDMA and I am pretty sure that the only thing your phone uses your SIM card for is LTE data. So if I am correct you need a SIM that is data only. The other phone it works in, is it CDMA or GSM?

CodeNameRedNeck said:
No problem. I could be wrong but I am pretty sure your Sprint phone is CDMA and I am pretty sure that the only thing your phone uses your SIM card for is LTE data. So if I am correct you need a SIM that is data only. The other phone it works in, is it CDMA or GSM?
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Thanks for the quick reply.
Actually I don't know anything about the CDMA or GSM things. Here is the result I got from googling the spec of the other phone :
Technology
GSM / HSPA / LTE
So, assuming you're right, can I just "disable" the calling and SMS function of the SIM, make it to become a data only SIM? I already got into a 6 month contract here, so I can't change the contract type in about 5 months !!!

hoangnnm said:
Thanks for the quick reply.
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You are welcome. I do not think you can do that to a SIM. The other phone sounds like a GSM phone and if the SIM works in that phone it will not work in a CDMA phone. I would go to your new carrier and ask if there is anything they can help you with. That's assuming that you are not carrier locked to Sprint. Then you have the fact that the CDMA SIM will not work in your other phone.

CodeNameRedNeck said:
You are welcome. I do not think you can do that to a SIM. The other phone sounds like a GSM phone and if the SIM works in that phone it will not work in a CDMA phone. I would go to your new carrier and ask if there is anything they can help you with. That's assuming that you are not carrier locked to Sprint. Then you have the fact that the CDMA SIM will not work in your other phone.
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Thanks, but are you sure this is a CDMA Phone? Because when I change the Network Mode to CDMA or LTE/CDMA, the phone will lose all the signal?

hoangnnm said:
Thanks, but are you sure this is a CDMA Phone? Because when I change the Network Mode to CDMA or LTE/CDMA, the phone will lose all the signal?
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http://www.pcmag.com/article2/0,2817,2407896,00.asp
Yes I am sure. I have seen CDMA carrier phones that were refurbished by third parties that "claim" they are unlocked for GSM carriers. I am not sure how much I trust that. You may hit up Sprint support and see if there is something they can do for you. If you bought it on contract from them they may not do anything for you.
Good luck.