Database Users

[Q] Installing another S4 carrier's modem

I have an I337 running on tmobile network. I have tried both tmobile's and at&ts roms and both get 4g but the att&t rom seem to connect faster. I am currently on mdl modem and woul like to experiment with tmobile's modems and am wondering if it is safe?
Thanks in advance

Airtioteclint said:
I have an I337 running on tmobile network. I have tried both tmobile's and at&ts roms and both get 4g but the att&t rom seem to connect faster. I am currently on mdl modem and woul like to experiment with tmobile's modems and am wondering if it is safe?
Thanks in advance
Click to expand...
Click to collapse
I heard doing this could possibly erase your IMEI number. Personally, I'd only flash my carrier's modems. Just to be on the safe side.

Its not wise to use other carriers modems, and it will clear the IMEI, but I have heard that it can be done. Kinda of a hit and miss thing, if you are going to pursue it, backup your efs first.

MattMJB0188 said:
I heard doing this could possibly erase your IMEI number. Personally, I'd only flash my carrier's modems. Just to be on the safe side.
Click to expand...
Click to collapse
TheAxman said:
Its not wise to use other carriers modems, and it will clear the IMEI, but I have heard that it can be done. Kinda of a hit and miss thing, if you are going to pursue it, backup your efs first.
Click to expand...
Click to collapse
Thank you both for replying, it sounds too risky for me I'm glad I asked first.

Airtioteclint said:
Thank you both for replying, it sounds too risky for me I'm glad I asked first.
Click to expand...
Click to collapse
Your welcome, and trust me, do not get into the IMEI restore thing, you talking about a pain, try that once.

good choice. in all the diff radios i have flashed on various phones they gave no more than minimal improvement if any
i thought initially the mf3 radio was better, now not sure

TheAxman said:
Your welcome, and trust me, do not get into the IMEI restore thing, you talking about a pain, try that once.
Click to expand...
Click to collapse
I hope I'll never have to go through that but if I did, can you share the steps? With my s3 (may it rest in peace) a simple "reboot nvbackup" and "reboot nvrestore"command in terminal emulator was all it took, and it saved me many times. Would this also work with the s4?
rugmankc said:
good choice. in all the diff radios i have flashed on various phones they gave no more than minimal improvement if any
i thought initially the mf3 radio was better, now not sure
Click to expand...
Click to collapse
You're right that has been my experiences with different radios also.

replacing the IMEI, talk about a hardline approach from Samsung.
I remember on my S1 flashing radios from S1's all over the world, Europe, China etc etc
Though thanks for this thread, I was actually wondering about flashing a canadian modem, to unlock AWS and since it's one build higher than the AT&T modem

Just a reminder, it is not wise to run other carriers modems, the modems we have are sufficient to do what you need, and if you find a way, you will not see much of a change if any.
Good luck to all.

TheAxman said:
Just a reminder, it is not wise to run other carriers modems, the modems we have are sufficient to do what you need, and if you find a way, you will not see much of a change if any.
Good luck to all.
Click to expand...
Click to collapse
Hey man, i am starting to think i would have to flash another variants modem on my s4 m919v because i dont see any modem files for my phone on xda or atleast i cant find many because this variant isnt all that common. What do you think its possible right?
Oh and the reason i want to flash modem is because i want to flash an older modem for s4s that allowed them to be unlocked using the *#0011# code and i cant do that currently. I have heard flashing an older one will allow me to unlock my phone.

[Q] Flashed stock rom, now no network?

Hi there, new to the forums posting but I read here constantly. I have an sm-900w8 note from Telus in Canada. I was running a custom rom before and decided I wanted to go back to stock before the Kitkat release. Anyway, I flashed the rom from sammobile.com that was for my phone (the link said it was for telus and the file even ends in TLS). So I flash it using odin and everything is perfect, the phone reboots and odin is finished. After that I decided I wanted to clear all my data and apps off the phone as well so I did a factory reset. The next time I turn the phone on everything is working (wifi gps ect) but I can't get on the network and it says I don't have a valid SIM. Also I notice the app packages from telus are not the correct ones and one of them is labelled Bell. So I am guessing the site has the bell firmware for telus as well? This doesn't matter to me but I do need my network running. Do you think it would just be a modem problem? Any information would be GREATLY appreciated guys!

Kevind_444 said:
Hi there, new to the forums posting but I read here constantly. I have an sm-900w8 note from Telus in Canada. I was running a custom rom before and decided I wanted to go back to stock before the Kitkat release. Anyway, I flashed the rom from sammobile.com that was for my phone (the link said it was for telus and the file even ends in TLS). So I flash it using odin and everything is perfect, the phone reboots and odin is finished. After that I decided I wanted to clear all my data and apps off the phone as well so I did a factory reset. The next time I turn the phone on everything is working (wifi gps ect) but I can't get on the network and it says I don't have a valid SIM. Also I notice the app packages from telus are not the correct ones and one of them is labelled Bell. So I am guessing the site has the bell firmware for telus as well? This doesn't matter to me but I do need my network running. Do you think it would just be a modem problem? Any information would be GREATLY appreciated guys!
Click to expand...
Click to collapse
The first and most important question: Do you have a backup of your EFS folder?
If so, you'll be happy. If not, prepare for the worst case scenario.

Kevind_444 said:
Hi there, new to the forums posting but I read here constantly. I have an sm-900w8 note from Telus in Canada. I was running a custom rom before and decided I wanted to go back to stock before the Kitkat release. Anyway, I flashed the rom from sammobile.com that was for my phone (the link said it was for telus and the file even ends in TLS). So I flash it using odin and everything is perfect, the phone reboots and odin is finished. After that I decided I wanted to clear all my data and apps off the phone as well so I did a factory reset. The next time I turn the phone on everything is working (wifi gps ect) but I can't get on the network and it says I don't have a valid SIM. Also I notice the app packages from telus are not the correct ones and one of them is labelled Bell. So I am guessing the site has the bell firmware for telus as well? This doesn't matter to me but I do need my network running. Do you think it would just be a modem problem? Any information would be GREATLY appreciated guys!
Click to expand...
Click to collapse
Seems you have installed a carrier FW on your device and it has SIM LOCKED it. try flashing another.
EDIT: @donalgodon - it's only really EFS when it boot loops and shows Android process not responding etc :good:

radicalisto said:
Seems you have installed a carrier FW on your device and it has SIM LOCKED it. try flashing another.
EDIT: @donalgodon - it's only really EFS when it boot loops and shows Android process not responding etc :good:
Click to expand...
Click to collapse
Well, that's not exactly accurate. The phone can boot with a corrupted EFS, but you will get no network access (and no IMEI number.)
It's happened to me, so I know it's possible. It's a common symptom of the OP's issues on Samsung devices.

radicalisto said:
Seems you have installed a carrier FW on your device and it has SIM LOCKED it. try flashing another.
EDIT: @donalgodon - it's only really EFS when it boot loops and shows Android process not responding etc :good:
Click to expand...
Click to collapse
Yeah I am sure I'm not in dire straights yet and lucily I have my backup phone to use for now. I am wondering though, sammobile is the most legit source for stock firmware around, do you guys have any suggestions? Or can I possibly even try just flashing a new modem through odin? (I have never done this but seems easy enough)

donalgodon said:
Well, that's not exactly accurate. The phone can boot with a corrupted EFS, but you will get no network access (and no IMEI number.)
It's happened to me, so I know it's possible. It's a common symptom of the OP's issues on Samsung devices.
Click to expand...
Click to collapse
True, however, OP states that it was Telus FW that was downloaded and flashed...but it's showing BELL.settings, So the probability of it being EFS is low, it's sim locked the device via the BELL firmware more than likely. Reflashing the correct or unbranded firmware will indeed fix it
---------- Post added at 07:28 PM ---------- Previous post was at 07:26 PM ----------
Kevind_444 said:
Yeah I am sure I'm not in dire straights yet and lucily I have my backup phone to use for now. I am wondering though, sammobile is the most legit source for stock firmware around, do you guys have any suggestions? Or can I possibly even try just flashing a new modem through odin? (I have never done this but seems easy enough)
Click to expand...
Click to collapse
Well Sammobile isn't immune to mistakes, but it's rare it happens, they're genuine enough.. You could try the modem, first thing I'd do is test the back up and see if it's the downloaded ROM that has cause the issue.
And yes, you can flash the modem via Odin.

Hey guys... update :
Used #*272 and changed csc from bell to Telus. Fixed instantly!
Thanks for your help guys.
Sent from my SM-N900W8 using xda app-developers app

Kevind_444 said:
Hey guys... update :
Used #*272 and changed csc from bell to Telus. Fixed instantly!
Thanks for your help guys.
Sent from my SM-N900W8 using xda app-developers app
Click to expand...
Click to collapse
I thought this doesn't work in changing csc code. What's the full numbers you have to input, is it #*272*IMEI# ?

flashing old modems?

Can I flash old modems or radios? I've gone through hell with this device and have only gotten signal once.
If I can't get full 4G than it doesn't connect and has no bars and a circle with a line through it.
I'm running safestrap, stock rooted, so if I can flash different modems please let me know. Thanks so much! !!

DaveDroid662 said:
Can I flash old modems or radios? I've gone through hell with this device and have only gotten signal once.
If I can't get full 4G than it doesn't connect and has no bars and a circle with a line through it.
I'm running safestrap, stock rooted, so if I can flash different modems please let me know. Thanks so much! !!
Click to expand...
Click to collapse
Yes you can, just use the modems from THIS thread and flash them with Odin.

airmaxx23 said:
Yes you can, just use the modems from THIS thread and flash them with Odin.
Click to expand...
Click to collapse
thank you but I think I have a real problem on my hands. I looked at my buddies galaxy note 3 and in his settings I could see his hardware version and in mine its blank. I haven't been able to receive any signal on the device since I got it, but on WiFi it works. I know for about 2 hours I had 4G and it it wasn't a strong signal it would go beck to no signal no service. Even when it had full 4G I couldn't place a call, I'd get mobile network unavailable.
I really appreciate the help and I will be sending you thanks when I get home

You may want to try flashing the full stock tar file.

DaveDroid662 said:
Can I flash old modems or radios? I've gone through hell with this device and have only gotten signal once.
If I can't get full 4G than it doesn't connect and has no bars and a circle with a line through it.
I'm running safestrap, stock rooted, so if I can flash different modems please let me know. Thanks so much! !!
Click to expand...
Click to collapse
I flashed mje modem in on nc4 stock, seems to be a little better. Nc4 i was having same issues as you, now i stay mostly 4g with max 2 bars, instead of being 3g and 1 bar. Lol just get odin 3.09 and load mje modem in AP and walah!

airmaxx23 said:
You may want to try flashing the full stock tar file.
Click to expand...
Click to collapse
I've done it about 4 times.
oSNooZEo said:
I flashed mje modem in on nc4 stock, seems to be a little better. Nc4 i was having same issues as you, now i stay mostly 4g with max 2 bars, instead of being 3g and 1 bar. Lol just get odin 3.09 and load mje modem in AP and walah!
Click to expand...
Click to collapse
I'll try again. Is there anyway to flash it with safestrap? I don't have access to my computer.

DaveDroid662 said:
I've done it about 4 times.
I'll try again. Is there anyway to flash it with safestrap? I don't have access to my computer.
Click to expand...
Click to collapse
Try mobile odin, no guarantee, but can't see why it wouldn't work

oSNooZEo said:
Try mobile odin, no guarantee, but can't see why it wouldn't work
Click to expand...
Click to collapse
Mobile Odin will not work, sorry.

do you guys think this could be like an internal hardware problem? I flashed all the stock firmwares and all sorts of different radio frequencies and it's always the same thing. just a circle with a line through it and no bars

DaveDroid662 said:
do you guys think this could be like an internal hardware problem? I flashed all the stock firmwares and all sorts of different radio frequencies and it's always the same thing. just a circle with a line through it and no bars
Click to expand...
Click to collapse
Where did you get the phone? Did you check the SIM?
Sent from my Note 3 via Tapatalk

I ended up giving the phone back to the person I got it from and they say that they are going to try and return it to Verizon because it's defective. The only issue I'm having now is I can't find the slip cover that has the IMEI on it. I'm pretty sure its at my house but if not is there anything I can do? Contact Samsung and see if maybe they can send another one I'm not sure.

DaveDroid662 said:
I ended up giving the phone back to the person I got it from and they say that they are going to try and return it to Verizon because it's defective. The only issue I'm having now is I can't find the slip cover that has the IMEI on it. I'm pretty sure its at my house but if not is there anything I can do? Contact Samsung and see if maybe they can send another one I'm not sure.
Click to expand...
Click to collapse
The imei is under the battery not on the battery cover.
Sent from my Galaxy Note S5

[Q] Galaxy S4 (SGH-I337M) says NO MOBILE NETWORK (HELP!)

Hey guys,
I'm new to the forum so please excuse me if this is the wrong place to post this. I'll start from the beginning. I bought a Galaxy S4 (SGH-I337m) from somebody in my city. They said the phone originally worked with Rogers/Fido, but that they switched the logic board on it so now it works with Bell/Virgin. The thing is though, when I put my Virgin Mobile sim card in the phone, it won't let me send texts or make calls. I checked the IMEI and it's not blacklisted or anything.
It says No Service and has the little circle with a diagonal line showing up in the notification bar and when I try to send a text, it says No Network Connection (No signal found for mobile networks). I find it weird because I still get a notification saying that I have an unheard voicemail.
I've tried resetting the phone multiple times. I've also tried flashing both the Bell and Virgin Mobile Lollipop firmwares and that didn't work either. To be honest, I'm not sure how to tell which one I would need to install. I noticed when trying to flash the Bell firmware, that the phone kinda skips to a black screen quickly every time I close an app. I'm assuming that would mean it needs the Virgin Mobile firmware.
That still doesn't fix the mobile network issue though. If anyone could help me out, I would GREATLY appreciate it!!!! Here is a bit of info, I'm hoping it helps. If you need anything else, please let me know.
Model number: SGH-I337M
Android Version: 5.0.1
Baseband Version: I337MVLUGOC4
Build Number: LRX22C.I337MVLUGOC4
Also, in the "Status" menu, I noticed it says:
Service State
Voice: Out of Service / Data: Out of Service
Not sure if that has anything to do with it or if that's normal. Again, if you have any suggestions, PLEASE let me know. I'm super desperate as I can't afford to lose the money I paid for this. Thanks in advance.
EDIT: Coincidentally my girlfriend has a Galaxy S4 of the same model and with Bell/Virgin. I opened up the ABOUT DEVICE menu in both phones and the only other difference I noticed is on hers it says:
SE for Android Status:
"sepf_sgh-I337M_5.0.1_0013"
And mine says "sepf_sgh-I337M_5.0.1_0009"
Does that have anything to do with it maybe?

TeknikalMusic said:
Does that have anything to do with it maybe?
Click to expand...
Click to collapse
Install this APP and add all screenshots pls .

Okay, will do. I will post the screenshots in about 20 mins. I rooted the phone, installed CWM and am in the middle of flashing the latest firmware again. I forgot to enable USB debugging before flashing originally and I wanted to install CWM to wipe the cache. No idea if that would make a difference but I've been up all night trying anything lol. Thank you for the reply though, will post the screenshots in about 20 mins.

TeknikalMusic said:
Okay, will do. I will post the screenshots in about 20 mins. I rooted the phone, installed CWM and am in the middle of flashing the latest firmware again. I forgot to enable USB debugging before flashing originally and I wanted to install CWM to wipe the cache. No idea if that would make a difference but I've been up all night trying anything lol. Thank you for the reply though, will post the screenshots in about 20 mins.
Click to expand...
Click to collapse
Don't flash more things atm for avoid one brick pls :highfive:

Joku1981 said:
Don't flash more things atm for avoid one brick pls :highfive:
Click to expand...
Click to collapse
Okay, I have the app installed. Which screens should I screenshot? I know you shouldn't post your IMEI online, so I'm assuming I skip the "personal" tab or?

Here is 4 of the screenshots I took (I hope this works lol)

Here are the other 2 I took

TeknikalMusic said:
Here are the other 2 I took
Click to expand...
Click to collapse
All seems correct but I think your device works for Bell Mobile (BMC) only but NOT for Virgin Mobile (VMC). Try to use one BELL simcard for verify it.

Joku1981 said:
All seems correct but I think your device works for Bell Mobile (BMC) only but NOT for Virgin Mobile (VMC). Try to use one BELL simcard for verify it.
Click to expand...
Click to collapse
In all my experience, Bell/Virgin are always interchangeable. Same with Telus/Koodo and Rogers/Fido. I tried putting a Bell sim card in though just now and it still has the problem. It doesnt load any of the signal bars or anything. Oddly enough, when there is no sim card in the phone, the bars show up?

TeknikalMusic said:
In all my experience, Bell/Virgin are always interchangeable. Same with Telus/Koodo and Rogers/Fido. I tried putting a Bell sim card in though just now and it still has the problem. It doesnt load any of the signal bars or anything. Oddly enough, when there is no sim card in the phone, the bars show up?
Click to expand...
Click to collapse
Don't doubt it and return it if you can still.

Joku1981 said:
Don't doubt it and return it if you can still.
Click to expand...
Click to collapse
Since it was from Bell, would flashing the Virgin Mobile firmware somehow mess it up? What are the exact steps I would need to take to try to reset it back to stock settings? I'm wondering if I'm missing anything. Or if the APN settings have anything to do with it? I set them to default already and tried adding the Virgin Mobile Canada apn settings as well

http://forum.xda-developers.com/galaxy-s4-att is the proper place to ask your questions regarding your S4, rather than where you originally posted this, the International S4 forum. Since more people with your device will be available at the given link, you may want to ask your questions over there. Or simply be patient, as this thread will be moved over there in due time.

Simple inquiry about WiFi when screen's off

Hi there, fellow enthusiasts!
My phone doesn't connect to WiFi when the screen is off. As soon as I turn it on, it's good to go; connects within 2 seconds or so which is great. I'm just wondering why it doesn't connect to WiFi when the screen is off. I've tried every option possible and for well over a year now it just doesn't go thru with screen off automatically. I've switched ROMs, done stock, you name it.
It's annoying to have to take the phone out of my pocket, wake it up, and then check my notifications; it should be doing this automatically. I know it does this with data fine but I don't use my phone like that, I'm a WiFi only kinda guy.
Help me troubleshoot. Any help would be of so much help. Thanks!

totbl said:
Hi there, fellow enthusiasts!
My phone doesn't connect to WiFi when the screen is off. As soon as I turn it on, it's good to go; connects within 2 seconds or so which is great. I'm just wondering why it doesn't connect to WiFi when the screen is off. I've tried every option possible and for well over a year now it just doesn't go thru with screen off automatically. I've switched ROMs, done stock, you name it.
It's annoying to have to take the phone out of my pocket, wake it up, and then check my notifications; it should be doing this automatically. I know it does this with data fine but I don't use my phone like that, I'm a WiFi only kinda guy.
Help me troubleshoot. Any help would be of so much help. Thanks!
Click to expand...
Click to collapse
Install this app and post the screenshots.
https://play.google.com/store/apps/details?id=org.vndnguyen.phoneinfo

Lennyz1988 said:
Install this app and post the screenshots.
https://play.google.com/store/apps/details?id=org.vndnguyen.phoneinfo
Click to expand...
Click to collapse
What info are you looking for? Thanks for the quick response.
Also, I found this.
http://forum.xda-developers.com/google-nexus-5/help/wifi-issue-t3059452
Seems to be common enough.

totbl said:
What info are you looking for? Thanks for the quick response.
Also, I found this.
http://forum.xda-developers.com/google-nexus-5/help/wifi-issue-t3059452
Seems to be common enough.
Click to expand...
Click to collapse
I am looking for you modem in combination with your rom and bootloader.

Lennyz1988 said:
I am looking for you modem in combination with your rom and bootloader.
Click to expand...
Click to collapse
Modem: MDM9615M
Bootloader: L720VPUAMF9
ROM: CyanogenMod 12.1-20151012 jfltespr
From what I can gather the WiFi needs to poll more when the screen is off. Once in a blue it'll connect with screen off (may take up to 2 hours) to a known SSID. I'm not concerned about battery life with more polling, honestly. It'd be way more convenient to not have to turn my phone on to connect to an SSID.
I believe it used to work on 4.4 but I can't be sure. That thread I linked to said the behavior started on 5.1 if that's helpful.

totbl said:
Modem: MDM9615M
Bootloader: L720VPUAMF9
ROM: CyanogenMod 12.1-20151012 jfltespr
Click to expand...
Click to collapse
Modem: MDM9615M
This is not your modem. This is the chip inside your phone. I need the modem.

Lennyz1988 said:
Modem: MDM9615M
This is not your modem. This is the chip inside your phone. I need the modem.
Click to expand...
Click to collapse
Oh, sorry about that. I'm guessing you meant the baseband: L720VPUAMDC

totbl said:
Oh, sorry about that. I'm guessing you meant the baseband: L720VPUAMDC
Click to expand...
Click to collapse
Ok
The issue you are having was a common issue, but no one has that issue anymore. If I remember correctly that issue happens when you are running an old modem on new firmware. The wifi disconnects when you turn the screen off.
You are using a 4.2.2. bootloader and a 4.2.2. modem with a Lollipop rom. Why haven't you upgraded to a Lollipop bootloader and modem?

Lennyz1988 said:
Ok
The issue you are having was a common issue, but no one has that issue anymore. If I remember correctly that issue happens when you are running an old modem on new firmware. The wifi disconnects when you turn the screen off.
You are using a 4.2.2. bootloader and a 4.2.2. modem with a Lollipop rom. Why haven't you upgraded to a Lollipop bootloader and modem?
Click to expand...
Click to collapse
haha I honestly don't know. Like I said, I only use my phone with WiFi (Hangouts and Optimum Online = no monthly bill.) I didn't think I needed to upgrade. Which modem do you recommend I upgrade to? I'll report back as soon as I upgrade.

totbl said:
haha I honestly don't know. Like I said, I only use my phone with WiFi (Hangouts and Optimum Online = no monthly bill.) I didn't think I needed to upgrade. Which modem do you recommend I upgrade to? I'll report back as soon as I upgrade.
Click to expand...
Click to collapse
I don't know which modem since this is the section for the i9505. It's a different model. You can also just flash the latest stock rom.
You have to check here, but at least you know what to look for.
http://forum.xda-developers.com/galaxy-s4-sprint

Lennyz1988 said:
Ok
The issue you are having was a common issue, but no one has that issue anymore. If I remember correctly that issue happens when you are running an old modem on new firmware. The wifi disconnects when you turn the screen off.
You are using a 4.2.2. bootloader and a 4.2.2. modem with a Lollipop rom. Why haven't you upgraded to a Lollipop bootloader and modem?
Click to expand...
Click to collapse
I assume I should use the latest: MF9FirmwareAIO and Odin. I'll be right back.

Lennyz1988 said:
I don't know which modem since this is the section for the i9505. It's a different model. You can also just flash the latest stock rom.
You have to check here, but at least you know what to look for.
http://forum.xda-developers.com/galaxy-s4-sprint
Click to expand...
Click to collapse
Same result. Firmware upgraded to latest.
It's not that my WiFi turns off when the phone is asleep. It'll stay on whatever WiFi I'm connected to, but as soon as I am out of range from it, it obviously will disconnect BUT then it doesn't connect to any other WiFi in range unless I turn the screen on first. That thread I linked you to lists the same exact problem.
I appreciate the help.

totbl said:
Same result. Firmware upgraded to latest.
It's not that my WiFi turns off when the phone is asleep. It'll stay on whatever WiFi I'm connected to, but as soon as I am out of range from it, it obviously will disconnect BUT then it doesn't connect to any other WiFi in range unless I turn the screen on first. That thread I linked you to lists the same exact problem.
I appreciate the help.
Click to expand...
Click to collapse
Can you tell me again what your modem is using the app?

lennyz1988 said:
can you tell me again what your modem is using the app?
Click to expand...
Click to collapse
l720vpuamf9

totbl said:
l720vpuamf9
Click to expand...
Click to collapse
Your modem didn't update. Try reflashing the firmware you just flashed. Only this time do it twice. So flash it, reboot phone, flash it again.

Lennyz1988 said:
Your modem didn't update. Try reflashing the firmware you just flashed. Only this time do it twice. So flash it, reboot phone, flash it again.
Click to expand...
Click to collapse
I was on L720VPUAMDC when I made this thread, then after Odin it's on L720VPUAMF9. That's the latest, no? What do you mean it didn't update? Anway, I'll try again twice.

Lennyz1988 said:
Your modem didn't update. Try reflashing the firmware you just flashed. Only this time do it twice. So flash it, reboot phone, flash it again.
Click to expand...
Click to collapse
It's the same as it was before, kind sir.

totbl said:
I was on L720VPUAMDC when I made this thread, then after Odin it's on L720VPUAMF9. That's the latest, no? What do you mean it didn't update? Anway, I'll try again twice.
Click to expand...
Click to collapse
L720VPUAMF9 = Jelly Bean 4.2.2
So not, it's still a very old modem.
http://forum.xda-developers.com/galaxy-s4-sprint/development/rom-stock-od2-odin-flashable-t3133661

Oh *slaps self* I see. I upgraded the modem to NG2. Still the same issue unfortunately. I really thought we had it this time. What else could it be?

Lennyz1988 said:
L720VPUAMF9 = Jelly Bean 4.2.2
So not, it's still a very old modem.
http://forum.xda-developers.com/galaxy-s4-sprint/development/rom-stock-od2-odin-flashable-t3133661
Click to expand...
Click to collapse
*edit* Actually...IT WORKS! It connects to a known WiFi network when the screen is off in exactly 4 minutes. Much better than before where it was not at all or hours. You've been completely helpful, dude. Thank you. I just have one more question, is there anyway for it to poll faster with the screen off? As in, can I get it to connect to an open WiFi network under 4 minutes or instantly?