So the *#*#4636#*#* GSM battery fix has been all over but I am unsure if it actually changes anything.
Here is what I have found:
I do the the *#*#4636#*#* dial, go to phone info, hit menu, then select radio band, force close, change to CDMA auto (PRL), then hit home.
Now here is the problem. Hold down home for recent programs and go back into testing (I found doing the *#*#4636#*#* lags and kills my phone sometimes). Hit Menu, force close, and take a look at what the preferred network type is: GSM.
As a test to the “visual glitch” theory, I changed the type to GSM/CDMA auto, when I return to the test menu, GSM/CDMA auto stays. So this menu is showing what it is actualy set to.
Every time you go to menu and select radio, the force close shuts off the radio and the menu says GSM. Is there really a “visual glitch” or does the GSM show because of the procedure followed??
Also it is referring to the PRL, which is the roaming list provided by Sprint, which is not going to have any GSM listing anyway.
I am not an expert by any means but there is more to this mystery then everyone is lead to believe. Battery life is a big issue and I am unsure if the “solution” is actually helping people.
The Time Without Signal fix works. Here's why.
Hitting menu and causing the force close causes it to reset to default. If you actually set it to GSM auto PRL, it is reading the Sprint towers off the PRL, and searching for a GSM signal at the same time. Try changing it to GSM only, and seeing if that causes the TWS to rise dramatically.
This solution was only meant to help people who's phones were searching for a non-CDMA signal.
Do we know if this is still a problem with the offical Sprint 2.1 update?
It hasn't been a problem for a few months now.
abcdfv said:
It hasn't been a problem for a few months now.
Click to expand...
Click to collapse
I did not know that, I wonder how many people are doing this needless now.
I have been running fresh 2.1.1 and do it every time I reboot. No wonder I never saw a difference!
abcdfv said:
The Time Without Signal fix works. Here's why.
Hitting menu and causing the force close causes it to reset to default. If you actually set it to GSM auto PRL, it is reading the Sprint towers off the PRL, and searching for a GSM signal at the same time. Try changing it to GSM only, and seeing if that causes the TWS to rise dramatically.
This solution was only meant to help people who's phones were searching for a non-CDMA signal.
Click to expand...
Click to collapse
So if my phone is CONSTANTLY at 50% +/- TWS... is this normal or should I change something?
kelmar13 said:
So if my phone is CONSTANTLY at 50% +/- TWS... is this normal or should I change something?
Click to expand...
Click to collapse
You should follow my guide on how to reduce it. It's in the sticky wiki.
Hi,
I own a LG Optimus 2x (P990) running on stock GB with 0725 baseband. One major problem I'm facing with it is it keeps losing the signal completely. After researching online, I found out about the 4636 hidden menu (*#*#4636#*#*) and then changing the network type to GSM auto (PRL). This helped a little. However, the settings dont "stick". After few days, or sometimes, a couple of hours, they go back to WCDMA preferred which causes a complete loss of connectivity for me. How do I save these settings? I dont really use 3G as its not feasible in my region yet. Can someone please suggest something?
Why didn't you just change it at the settings menu under wireless & network? You can set to 'only use 2g network'.
tablighs said:
Why didn't you just change it at the settings menu under wireless & network? You can set to 'only use 2g network'.
Click to expand...
Click to collapse
I've tried that before going into the hidden menu. Same thing happens. After sometime, it kinda forgets that its supposed to use GSM and reverts to WCDMA
Happens to me too, i am on temasek's Kang, although it happens randomly and isnt that frequent in my phone so i dont worry bout it much.
Even its random for me. But when it happens, I end up missing calls and texts coz of it. Its soo irritating when the phone is unable to perform its basic functions correctly. I really dont understand why does the device revert back to WCDMA when i'm telling it to use GSM
Turn OFF and then ON phone.
Set to 2G only and save
Turn phone OFF/ON
I was just fighting against the opposite, I want it to be on WCDMA only but the config was resetting every time I restarted the phone or causing signal loss. A few minutes ago I matched the RIL with the baseband even with recommendation and it just worked!
Please use the Q&A Forum for questions &
Read the Forum Rules Ref Posting
Moving to Q&A
Hi everyone,
I really appreciate the work everyone puts in on this site, it's amazing. This past week, I bought a Samsung Galaxy S5 (SM-G00P, the Sprint Model)
So I will edit this guide later on with pictures, but right now I just need to write down what I've discovered.
I'm also not sure if everything I say is necessary / absolutely will work for you, also if you try to do some of this on your own, it's your own responsibility if something bad happens.
--------------------------
Short Requirements
--------------------------
EFS Professional
QXDM Professional (I believe QPST must also be installed)
Cyanogenmod 12.1 with BusyBox
So, what I have done is flash Cyanogenmod 12.1 for the SM-G900P on the phone and installed BusyBox. Then I have downloaded EFS Professional on my computer.
Then enable USB Debugging (adb debugging.) Open up EFS Professional, go to the Samsung Tools tab and select the bottom option with includes Modem + Diag. Open up QXDM Professional, go to the Communications tab up top and enter in the Samsung port (COM9, for example) and make sure to check it off.
Go to "LTE" option in QXDM and enter in "0xFFFFFFF3FFF" AKA "17592185995263" underneath ID 06828 and ID 06829. There should be two config's per ID, I entered in both. (It should be noted that "0xFFFFFFF3FFF" will enable "ALL" LTE bands and may not be necessary)
----------------------------------------------------------------
Finicky Step (That seems to enable LTE, somehow)
----------------------------------------------------------------
Now restart the phone, just to eliminate any possibility of errors. Go to: Settings > Mobile networks > Network operators > choose AT&T
Now I have done this step differently a few times, but this is what seems to get rid of HSPA+ and H to force LTE on (not sure why)
Sometimes I have selected T-Mobile instead of AT&T and let it time out, then select AT&T or just restart the phone and select AT&T.
I really don't seem to understand why this works like this, maybe someone has some more insight? If I restart the phone, it goes back to HSPA+.
I know this is using AT&T's LTE bands, because LTE Discovery shows Band 2 a lot of the time. Weird thing is, sometimes it shows Band 25, even though I believe that is a band that Sprint uses.
CM13 - Does not have "Network operators" option.
I'd like to write a script that either automatically goes through the menus on boot, or can automatically disconnect from the network and connect to the correct network.
ALSO WORKS,
If you download the "Radio Switcher" app, set to GSM auto (PRL), then set to LTE/GSM auto (PRL) in that order.
Turn OFF radio, turn radio on, select GSM auto (PRL), let it connect, then select LTE/GSM auto (PRL) and it will connect to LTE immediately.
Mostly interested in the underlying causes of why this works. Could be applied to more phones in general.
Earlier when I was adding LTE bands it seemed like they added (showed up on QXDM) but LTE would never connect. Something interesting is in the program "DFS" 6829 wouldn't show the edited changes or let me edit them, QXDM seemed to work ok though.
Other discoveries:
Once you initially set it to LTE, sometimes it randomly goes back to HSPA+. But I've had LTE last good amounts of time (1-2 hours)
If you make a phone call it switches to HSPA+ but won't revert back to LTE.
If you open up the "Radio Switcher" or "Network" app (they are the same) it sometimes will just go back to LTE immediately, other times you simply need to run the Ping test.
I think it keeps reverting back to HSPA+ after a while because it eventually connects to Band 25. Not sure if I can access the Service Menu (*#0011#) on Cyanogenmod, maybe to set priority? Might actually be because of too many different LTE bands enabled.
I'll try adding only AT&T's bands to see how things work.
So far, tried bands 2, 4, 5, 12, 17 - can't get LTE. Band 2 only, can't get LTE. Only getting HSPA+ on GSM auto (prl) and HSPA on LTE/GSM auto (prl). Tried both decimal and hex values in QXDM. For example, I've entered in 2 (decimal) and (0x2) and (0x02)
Wanted to point out here, phone booted up with service immediately.
Tried all bands except for 25, no LTE, a little more laggy, but not as bad as when band 25 is enabled.
Tried band 2 and 25, Got LTE, takes a lot of time when turning on phone for service to appear and when changing radios.
So, for some reason band 25 is needed in order to get LTE on other bands.
With bands 2 and 25 only enabled for LTE, I rarely drop to HSPA+.
It has only happened twice in the past 6 hours. (The LTE Discovery App has an option to cycle the network when LTE disconnects, which seems to only refresh HSPA+ once it goes back)
---------------------------------------
So I went back to stock firmware on the Touchwiz 5.0.
"Network" and "Radio Switcher" apps don't work, but "Advanced Signal Status" does.
Same steps work here as above in "getting" LTE, also there are more options to choose from.
LTE/WCDMA seems to work too.
Problem is I am getting this error:
"LTE: ESM - 33 EMM - x"
and can't connect to the internet, only band 25 seems to be connecting, unlike band 2 last time (maybe this is because I was on klte CM ROM).
I also should note that it now says "GPRS service: Disconnected"
In ServiceMode (*#0011#) I haven't had any luck, in the cases where I can do anything with the LTE bands it is only for 25, 26, and 41. Other cases show more bands, but it says something like "not
supported" to edit anything.
I also tried messing around with the ##3282# LTE settings, only shows 25, 26, 41 bands and I can't change the priorities.
aventurer said:
If you make a phone call it switches to HSPA+ but won't revert back to LTE.
Click to expand...
Click to collapse
This is because Straight talk doesn't support Voice over 4G, so your data connection has to fall back to 3.5G in order for a call to be placed.
Some more observations, I used this app called connection stabilizer which constantly pings for network connectivity. I think this might help keep the LTE up longer, when driving I will eventually lose LTE and get a ping failed. I'm not really that sure if this helps or not, but it's a total pain because you need to keep data on. One more thing to note is on the "mobile network settings" page I never see "GSM/WCDMA/LTE" option
I believe the only way for a permanent solution is to be able to flash another modem on the phone (such as SM-G900A or SM-G900T). Problem is Odin will never let me, I've tried everything to get another modem flashed with no luck, if anyone has any ideas or solutions please let me know I'd love to get this phone working consistently with LTE, although it seems that I may as well just return it and get the SM-G900T as it supports many bands (including the AT&T bands) Only thing is there is no FM Radio on the T-Mobile version, but I was planning on using Cyanogenmod anyways and NextRadio doesn't seem to work with the SM-G900P with Cyanogemod. Maybe there's a build.prop edit to allow it? Or maybe it's a kernel issue.
Did you make any further progress with LTE on touchwiz? Been tinkering and trying to get T-Mobile LTE (band 2 & 700Mhz) working on my own G900P.
Something interesting I found is that if I have it set to LTE/GSM (autoPRL) sometimes it will remove (hide) any T-mobile APNs and force you to use "sprint wholesales" and "global roaming SPCS". (switching back to GSM/WCDMA restores the T-mobile APNs. I wonder if that can be overriden by finding where those defaults are in the system files and editing them to be T-mobile...
Since the G900P is a CDMA phone, I've assumed that to get LTE on a GSM network I'd have to edit NV values in QPST/QXDM/EFS Professional to enable some bands. I've done that before on a G900V with KitKat on it and it gets GSM LTE fine.
The past few days I've looked for a solution and yesterday I was finally able to seemingly enable diagnostic mode and get into my G900P that has Marshmallow 6.0.1 on it. It was a headache just getting in to read the values. QXDM read the NV values but they only went as high as 6754; in the past the LTE bands needed enabling on 6828 and 6829. I don't know if the NV system has changed in Marshmallow or if my versions of QPST/QXDM/EFS Professional are outdated and won't read everything in 6.0.1 or some other problem. I wasn't able to make any band changes. Maybe somebody with more experience will have better luck.
Megado said:
Since the G900P is a CDMA phone, I've assumed that to get LTE on a GSM network I'd have to edit NV values in QPST/QXDM/EFS Professional to enable some bands. I've done that before on a G900V with KitKat on it and it gets GSM LTE fine.
The past few days I've looked for a solution and yesterday I was finally able to seemingly enable diagnostic mode and get into my G900P that has Marshmallow 6.0.1 on it. It was a headache just getting in to read the values. QXDM read the NV values but they only went as high as 6754; in the past the LTE bands needed enabling on 6828 and 6829. I don't know if the NV system has changed in Marshmallow or if my versions of QPST/QXDM/EFS Professional are outdated and won't read everything in 6.0.1 or some other problem. I wasn't able to make any band changes. Maybe somebody with more experience will have better luck.
Click to expand...
Click to collapse
In my case... I've managed to get it to look like the bands in question are enabled via QPST/QXDM (confirmed with readback through DFS/EFS pro)... but the LTE radio still doesn't activate (band ID in the debug screen is -119, LTE radio is "idle")
the write "block" you're experiencing is something Qualcomm/Samsung put in the android code as a binary blob (no source for people to find and disable/reverse engineer/bypass). Third party mods (CM etc that are not touchwiz kernel based) don't have this block.
I think I'm SOL with my only remaining option to try flashing a custom ROM. The LTE radio in my device simply won't start on any band other than 25.
vintagepc said:
I think I'm SOL with my only remaining option to try flashing a custom ROM. The LTE radio in my device simply won't start on any band other than 25.
Click to expand...
Click to collapse
Sorry for the late reply, I basically gave up after not getting anywhere with hours spent on this, I tried flashing alternative modems and nothing would work.
So this is what happened to me. It would show it alternating between bands 2/25.
My theory is even though I was able to modify the bands on the device (the values registered) it didn't do anything.
It seems as if disabling bands is the only thing that really works.
CM13 (kltedv) seemed to run as an okay ROM for the Sprint S5, it was easier to force the 2/25 LTE band on, problem with this is when you disconnect from that tower or place a phone call it will revert back, plus there comes to be issues with texting/calling by forcing it on LTE and there seems to be issues with switching between LTE and HSPA+
I recommend purchasing a SM-G900T as it provides a multitude of bands and the bootloader is unlocked, only downside is the FM Radio does not work.
*If anyone gets other LTE bands working on this phone, PLEASE post the solution here it would be insanely appreciated*
Yeah... there was some discussion as to whether the 900P doesn't have band calibrations for non-sprint LTE bands.
I'm not really looking for a new phone, just figured that if I could get LTE it would be a nice bonus.
Re FM radio: I looked into this some a while back, it works on the G900P because they have the correct radio transport code in the radio app... (other radio apps can't see the FM chipset) there are actually kernel modules (iris_radio_transport.ko) which should provide a standard FM radio interface for the G900P. Be interesting to compile those for a non-sprint phone and see if other models also have FM radio.
Well this thread kind of got my hopes up, then back down again.
I would really like to be able use LTE with this phone for AT&T. Having a difficult time trying to get it to read with QPST. EFSpro works fine though.
Sent from SM-G900Pkltespr
aventurer said:
Other discoveries:
Once you initially set it to LTE, sometimes it randomly goes back to HSPA+. But I've had LTE last good amounts of time (1-2 hours)
If you make a phone call it switches to HSPA+ but won't revert back to LTE.
If you open up the "Radio Switcher" or "Network" app (they are the same) it sometimes will just go back to LTE immediately, other times you simply need to run the Ping test.
I think it keeps reverting back to HSPA+ after a while because it eventually connects to Band 25. Not sure if I can access the Service Menu (*#0011#) on Cyanogenmod, maybe to set priority? Might actually be because of too many different LTE bands enabled.
I'll try adding only AT&T's bands to see how things work.
So far, tried bands 2, 4, 5, 12, 17 - can't get LTE. Band 2 only, can't get LTE. Only getting HSPA+ on GSM auto (prl) and HSPA on LTE/GSM auto (prl). Tried both decimal and hex values in QXDM. For example, I've entered in 2 (decimal) and (0x2) and (0x02)
Wanted to point out here, phone booted up with service immediately.
Tried all bands except for 25, no LTE, a little more laggy, but not as bad as when band 25 is enabled.
Tried band 2 and 25, Got LTE, takes a lot of time when turning on phone for service to appear and when changing radios.
So, for some reason band 25 is needed in order to get LTE on other bands.
With bands 2 and 25 only enabled for LTE, I rarely drop to HSPA+.
It has only happened twice in the past 6 hours. (The LTE Discovery App has an option to cycle the network when LTE disconnects, which seems to only refresh HSPA+ once it goes back)
---------------------------------------
So I went back to stock firmware on the Touchwiz 5.0.
"Network" and "Radio Switcher" apps don't work, but "Advanced Signal Status" does.
Same steps work here as above in "getting" LTE, also there are more options to choose from.
LTE/WCDMA seems to work too.
Problem is I am getting this error:
"LTE: ESM - 33 EMM - x"
and can't connect to the internet, only band 25 seems to be connecting, unlike band 2 last time (maybe this is because I was on klte CM ROM).
I also should note that it now says "GPRS service: Disconnected"
In ServiceMode (*#0011#) I haven't had any luck, in the cases where I can do anything with the LTE bands it is only for 25, 26, and 41. Other cases show more bands, but it says something like "not
supported" to edit anything.
I also tried messing around with the ##3282# LTE settings, only shows 25, 26, 41 bands and I can't change the priorities.
Click to expand...
Click to collapse
Also I got the values for 6828/6929 to stick. They are there when I reboot and everything. My biggest issue now is forcing LTE. I'm on CM13 and I have tried the prl method you mentioned but no matter what I try, LTE won't activate.
Sent from SM-G900Pkltespr
aventurer said:
Hi everyone,
I really appreciate the work everyone puts in on this site, it's amazing. This past week, I bought a Samsung Galaxy S5 (SM-G00P, the Sprint Model)
So I will edit this guide later on with pictures, but right now I just need to write down what I've discovered.
I'm also not sure if everything I say is necessary / absolutely will work for you, also if you try to do some of this on your own, it's your own responsibility if something bad happens.
--------------------------
Short Requirements
--------------------------
EFS Professional
QXDM Professional (I believe QPST must also be installed)
Cyanogenmod 12.1 with BusyBox
So, what I have done is flash Cyanogenmod 12.1 for the SM-G900P on the phone and installed BusyBox. Then I have downloaded EFS Professional on my computer.
Then enable USB Debugging (adb debugging.) Open up EFS Professional, go to the Samsung Tools tab and select the bottom option with includes Modem + Diag. Open up QXDM Professional, go to the Communications tab up top and enter in the Samsung port (COM9, for example) and make sure to check it off.
Go to "LTE" option in QXDM and enter in "0xFFFFFFF3FFF" AKA "17592185995263" underneath ID 06828 and ID 06829. There should be two config's per ID, I entered in both. (It should be noted that "0xFFFFFFF3FFF" will enable "ALL" LTE bands and may not be necessary)
Hi! Thank you so much for the hard work. I've try to follow this tutorial but I'm stock somewhere. I'd really appreciate if you could help me. I don't see "LTE" option in QXDM. I managed to get in some places where I can see LTE but I don't see where I can edit anything to enter in "OxFFFFFFF3FFF" AKA "17592185995263”
Click to expand...
Click to collapse
dragondevstud said:
aventurer said:
Hi everyone,
I really appreciate the work everyone puts in on this site, it's amazing. This past week, I bought a Samsung Galaxy S5 (SM-G00P, the Sprint Model)
So I will edit this guide later on with pictures, but right now I just need to write down what I've discovered.
I'm also not sure if everything I say is necessary / absolutely will work for you, also if you try to do some of this on your own, it's your own responsibility if something bad happens.
--------------------------
Short Requirements
--------------------------
EFS Professional
QXDM Professional (I believe QPST must also be installed)
Cyanogenmod 12.1 with BusyBox
So, what I have done is flash Cyanogenmod 12.1 for the SM-G900P on the phone and installed BusyBox. Then I have downloaded EFS Professional on my computer.
Then enable USB Debugging (adb debugging.) Open up EFS Professional, go to the Samsung Tools tab and select the bottom option with includes Modem + Diag. Open up QXDM Professional, go to the Communications tab up top and enter in the Samsung port (COM9, for example) and make sure to check it off.
Go to "LTE" option in QXDM and enter in "0xFFFFFFF3FFF" AKA "17592185995263" underneath ID 06828 and ID 06829. There should be two config's per ID, I entered in both. (It should be noted that "0xFFFFFFF3FFF" will enable "ALL" LTE bands and may not be necessary)
Hi! Thank you so much for the hard work. I've try to follow this tutorial but I'm stock somewhere. I'd really appreciate if you could help me. I don't see "LTE" option in QXDM. I managed to get in some places where I can see LTE but I don't see where I can edit anything to enter in "OxFFFFFFF3FFF" AKA "17592185995263”
Click to expand...
Click to collapse
Hi, in the NV browser there should be a tab that has a pull down menu where you can just jump ahead and get to 6928/6929.
Out of curiosity, what baseband firmware are you on?
SM-900P CM13
Click to expand...
Click to collapse
xHolomovementx said:
dragondevstud said:
Hi, in the NV browser there should be a tab that has a pull down menu where you can just jump ahead and get to 6928/6929.
Out of curiosity, what baseband firmware are you on?
SM-900P CM13
Click to expand...
Click to collapse
I'm on CM13, I'm sorry I just realize that I'm on a different firmware than the one in the tutorial.
If you mind, let me please take a little time to explain my case.
The phone had several problem (you can ask details if you want) I went to my network provider to see if they can fix it, the representative told me the phone needed to be flashed but since I didn't bought it from them they could do nothing. And when I got back I searched Google to see what it is about.
I could see under setting that my phone was a SM-G900T. Than I downloaded the stock OS for that specific version of the Samsung Galaxy S5. And any other required stuff like Odin, Samsung USB drivers and more. But the freshly downloaded firmware failed to installed on the phone. I finally managed to understand when I saw in the download mode screen that the phone was a SM-G900P NOT SM-G900T.
Than I downloaded the stock firmware for SM-G900P and it success to install on the phone. The phone was then working perfectly fine. But I couldn't get LTE since my carrier's band for LTE is band 3 (1800). And I tough if it had SM-G900T previously and at this time it was compatible with my carrier's LTE band cause T-Mobile also has band 3 for LTE, that's suppose to mean that I can get SM-G900T aboard or to have band 3 on it.
Maybe I give too much detail, but I want to make sure you fully understand the case and thank you for your help. We're almost at the end (loll).
Based on my reading, I tough installing a custom firmware would resolved the problem and that's why I installed CM13 (the first time I could say I love android ... I'm more accustomed to iOS) to find that I was not that right (it get even worse cause now I receive no data at all unless I'm on WiFi). Than I found this tutorial and an other one on XDA saying that it's possible to enable other bands on the phone.
But any tuto I use I get stocked at some point and I'm so novice to that field. But I can follow institutions:good:
Actually I can't access the USB settings screen and there's only two codes that works on it : *#06# for imei and *#*#4636#*#* which open a screen named "test".
I wish I gave useful details on the case, if there's anything else you need to know fell free to ask.
Click to expand...
Click to collapse
dragondevstud said:
xHolomovementx said:
I'm on CM13, I'm sorry I just realize that I'm on a different firmware than the one in the tutorial.
If you mind, let me please take a little time to explain my case.
The phone had several problem (you can ask details if you want) I went to my network provider to see if they can fix it, the representative told me the phone needed to be flashed but since I didn't bought it from them they could do nothing. And when I got back I searched Google to see what it is about.
I could see under setting that my phone was a SM-G900T. Than I downloaded the stock OS for that specific version of the Samsung Galaxy S5. And any other required stuff like Odin, Samsung USB drivers and more. But the freshly downloaded firmware failed to installed on the phone. I finally managed to understand when I saw in the download mode screen that the phone was a SM-G900P NOT SM-G900T.
Than I downloaded the stock firmware for SM-G900P and it success to install on the phone. The phone was then working perfectly fine. But I couldn't get LTE since my carrier's band for LTE is band 3 (1800). And I tough if it had SM-G900T previously and at this time it was compatible with my carrier's LTE band cause T-Mobile also has band 3 for LTE, that's suppose to mean that I can get SM-G900T aboard or to have band 3 on it.
Maybe I give too much detail, but I want to make sure you fully understand the case and thank you for your help. We're almost at the end (loll).
Based on my reading, I tough installing a custom firmware would resolved the problem and that's why I installed CM13 (the first time I could say I love android ... I'm more accustomed to iOS) to find that I was not that right (it get even worse cause now I receive no data at all unless I'm on WiFi). Than I found this tutorial and an other one on XDA saying that it's possible to enable other bands on the phone.
But any tuto I use I get stocked at some point and I'm so novice to that field. But I can follow institutions:good:
Actually I can't access the USB settings screen and there's only two codes that works on it : *#06# for imei and *#*#4636#*#* which open a screen named "test".
I wish I gave useful details on the case, if there's anything else you need to know fell free to ask.
Click to expand...
Click to collapse
Download Terminal Emulator for Android on Play store.
Open and grant su permission
Issue the following commands:
su
setprop sys.usb.config diag,acm,adb
Then issue the following command to make sure your changes stuck:
getprop sys.usb.config
(Should get diag,acm,adb)
Download EFS Professional
Turn on USB debugging
Open and click on Samsung tools, click the pull down menu and choose DIAG + MODEM + ADB
(If not already selected)
Make sure you are connected to a server.
Then open QXDM
click options > communications
Make sure the phone is being read (MSM***)
Click the target port pulldown menu and select your active COM.
Click View > Common > NV Browser
Should be able to read/write.
Look for 6928/6929 for LTE BC CONFIG
But beware, I'm not sure if this works. I have countless of times tried to do this mod and successfully completed the LTE mod, I still don't get LTE. No matter what radio I set it on. I even flashed back to my stock firmware, rerooted, and tried again to see if I could have more capabilities in service mode. It appears that you can only enable/disable the LTE bands that are equipped to the hardware.
Meaning that my LTE Modem most likely can only use band 25,26,41 as it's the only bands to be coded in my modem firmware. However, I was able to unlock band class 10, because it was built with the hardware.
SM-900P CM13
Click to expand...
Click to collapse
xHolomovementx said:
dragondevstud said:
Download Terminal Emulator for Android on Play store.
Open and grant su permission
Issue the following commands:
su
setprop sys.usb.config diag,acm,adb
Then issue the following command to make sure your changes stuck:
getprop sys.usb.config
(Should get diag,acm,adb)
Download EFS Professional
Turn on USB debugging
Open and click on Samsung tools, click the pull down menu and choose DIAG + MODEM + ADB
(If not already selected)
Make sure you are connected to a server.
Then open QXDM
click options > communications
Make sure the phone is being read (MSM***)
Click the target port pulldown menu and select your active COM.
Click View > Common > NV Browser
Should be able to read/write.
Look for 6928/6929 for LTE BC CONFIG
But beware, I'm not sure if this works. I have countless of times tried to do this mod and successfully completed the LTE mod, I still don't get LTE. No matter what radio I set it on. I even flashed back to my stock firmware, rerooted, and tried again to see if I could have more capabilities in service mode. It appears that you can only enable/disable the LTE bands that are equipped to the hardware.
Meaning that my LTE Modem most likely can only use band 25,26,41 as it's the only bands to be coded in my modem firmware. However, I was able to unlock band class 10, because it was built with the hardware.
SM-900P CM13
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Thank you very much! I've follow all your instruction and I got to NV Browser screen but I don't know what to do when I'm there.
I took a screen shot of it, but I can't upload it here, I don't know why!
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dragondevstud said:
xHolomovementx said:
Thank you very much! I've follow all your instruction and I got to NV Browser screen but I don't know what to do when I'm there.
I took a screen shot of it, but I can't upload it here, I don't know why!
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Click to collapse
Since I can't upload the screen shot I'm going to describe what I have on screen :
Item (checkable box) dual sim category filter : (*) All
Id : 06929
Description : WCDMA 1500 LNA Range fall
Full path name : wcdma_1500_lna_range_fall
Category : Factory
Fields
Input : 0
Value : 0
Name (partial) : wcdma_1500_lna_range_fall
Size : 16
Type : INT16
(Clickable buttons) Offline Reset Read Write
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dragondevstud said:
xHolomovementx said:
Thank you very much! I've follow all your instruction and I got to NV Browser screen but I don't know what to do when I'm there.
I took a screen shot of it, but I can't upload it here, I don't know why!
Click to expand...
Click to collapse
Since I can't upload the screen shot I'm going to describe what I have on screen :
Item (checkable box) dual sim category filter : (*) All
Id : 06929
Description : WCDMA 1500 LNA Range fall
Full path name : wcdma_1500_lna_range_fall
Category : Factory
Fields
Input : 0
Value : 0
Name (partial) : wcdma_1500_lna_range_fall
Size : 16
Type : INT16
(Clickable buttons) Offline Reset Read Write
Click to expand...
Click to collapse
dragondevstud said:
dragondevstud said:
Since I can't upload the screen shot I'm going to describe what I have on screen :
Item (checkable box) dual sim category filter : (*) All
Id : 06929
Description : WCDMA 1500 LNA Range fall
Full path name : wcdma_1500_lna_range_fall
Category : Factory
Fields
Input : 0
Value : 0
Name (partial) : wcdma_1500_lna_range_fall
Size : 16
Type : INT16
(Clickable buttons) Offline Reset Read Write
Click to expand...
Click to collapse
Whoa easy there, my 6928/6929's description is LTE BC CONFIG
LTE BC CONFIG DIV.
In the NV browser, there should be pulldown menu, within that menu, there should be an LTE category. Where LTE BC CONFIG/LTE DIV (6928/6929) should be. If you can't find it then I can may no longer be of assistance as the efs may be different considering the differences you mentioned about firmware earlier.
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