[UPDATE: 4/2/12] PRL Information Thread

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Whosdaman

Inactive Recognized Developer
May 9, 2008
5,673
1,408
Gainesville, Florida
Its funny because ppl on the epic touch 4g prl thread just talked about LA..

I know ppl are reporting slower speeds with ICS update etc...but for the LA area.......i think the network as a whole is slow as hell right now regardless of ICS. By slow as hell...I mean sometimes my speedtest won't even finish. To make matters worse..people living in "surburban" san fernando valley has it even worse. Only a FEW wimax towers up towards the south side only (btw PRLs don't have wimax towers as part of it) and seems like barely any sprint towers...I suppose not densely populated enough to be worthwhile. We can't even force roam because vzw 3g towers are just as ****ty so the hacked 00002 roms don't do anything either...

Your time will come very soon
 
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Hero_Guy

Senior Member
Jul 12, 2010
661
115
Its funny because ppl on the epic touch 4g prl thread just talked about LA..

I know ppl are reporting slower speeds with ICS update etc...but for the LA area.......i think the network as a whole is slow as hell right now regardless of ICS. By slow as hell...I mean sometimes my speedtest won't even finish. To make matters worse..people living in "surburban" san fernando valley has it even worse. Only a FEW wimax towers up towards the south side only (btw PRLs don't have wimax towers as part of it) and seems like barely any sprint towers...I suppose not densely populated enough to be worthwhile. We can't even force roam because vzw 3g towers are just as ****ty so the hacked 00002 roms don't do anything either...

You may want to try the el29 modem with the 12124 PRL. I'm getting around 2mb/s down and 1mb/s up with that combo.

Sent from my SPH-D710 using xda app-developers app
 

gatesmarch123

Senior Member
Apr 14, 2010
729
106
Can someone please tell me how to get roam control working? I'm on stock rooted gingerbread el29. Do I have to use a hacked prl? I was using 11115, but force roam wouldn't work at all.

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tensux

Senior Member
Nov 18, 2011
1,094
305
boston
Can someone please tell me how to get roam control working? I'm on stock rooted gingerbread el29. Do I have to use a hacked prl? I was using 11115, but force roam wouldn't work at all.

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the forced roam would not work? or the prl 11115 didnt work? not all prls work in every area, also it has been said that on the paid version of roam control works these days, the free one that was oth there and the hacked versions will not work.
 

konaman

Senior Member
Mar 21, 2009
420
64
Can someone please tell me how to get roam control working? I'm on stock rooted gingerbread el29. Do I have to use a hacked prl? I was using 11115, but force roam wouldn't work at all.

Sent from my SPH-D710 using xda app-developers app

I find that it works best on stock prl. Make sure u have it set up correctly by checking samsung in the settings. Then tap roam only and u should lose service for a sec as it switches over to roam. That's all I have ever done and it has always worked with 4 different phones.

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Dalmus

Senior Member
Feb 6, 2011
653
94
Milwaukee
Can someone please tell me how to get roam control working? I'm on stock rooted gingerbread el29. Do I have to use a hacked prl? I was using 11115, but force roam wouldn't work at all.

Sent from my SPH-D710 using xda app-developers app

There's really nothing to "get working" other than telling RC you are using a Samsung device.

What do you mean by "wouldn't work at all?" Did your phone not switch to roaming (triangle above the signal bars), or did it switch to roaming but 0 bars, or did it go to no signal (circle with a line through it)?
 

AestenD

Senior Member
Nov 3, 2011
519
79
Somewhere in Utah
I find that it works best on stock prl. Make sure u have it set up correctly by checking samsung in the settings. Then tap roam only and u should lose service for a sec as it switches over to roam. That's all I have ever done and it has always worked with 4 different phones.

Sent from my SPH-D710 using XDA

Why would you use with stock PRL? The whole reason we use roam control and the other PRL's is to get 3g roaming.

Sent from my SPH-D710 using XDA
 

sohungry

Member
Jul 14, 2011
31
4
I'm in Gainesville, FL. I flashed 12124 and the results are terrible compared to 61087 or even 21090. For some reason, Speedtest keeps using towers in Kansas...any suggestions on which PRL I should try? I have an Evo3D, if that makes any difference.
 

Godthing247

New member
May 5, 2009
1
0
Can't receive calls

I updated my rooted Epic 4g Touch to a new PRL and cannot receive calls. I can place calls, place and receive texts, but incoming calls go straight to voicemail. I have tried this in 4 different locations. This happens on any PRL i've tried (00002, 11115, 11119, 00001) When I switch back to Automatic using roam control, it works fine. Any thoughts on how to fix this?
 

AestenD

Senior Member
Nov 3, 2011
519
79
Somewhere in Utah
I'm in Gainesville, FL. I flashed 12124 and the results are terrible compared to 61087 or even 21090. For some reason, Speedtest keeps using towers in Kansas...any suggestions on which PRL I should try? I have an Evo3D, if that makes any difference.

Speed test connecting to Kansas is due to your location/GPS but giving you a good location. Nothing at all to do with the PRL.

Sent from my SPH-D710 using XDA
 

elliwigy

Retired Forum Moderator / Recognized Developer
XDA App Taskforce
lol u said changes were coming and were going to stop posting prls and weve been on the same one for months.. some changes.. and still.. next few months most likwly means next year for sprints crappy service.. i had to get the airave back since signal still is crap where i live

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Whosdaman

Inactive Recognized Developer
May 9, 2008
5,673
1,408
Gainesville, Florida
lol u said changes were coming and were going to stop posting prls and weve been on the same one for months.. some changes.. and still.. next few months most likwly means next year for sprints crappy service.. i had to get the airave back since signal still is crap where i live

Sent from my SPH-D710 using xda app-developers app

The next few months, you will notice an enormous amount of PRL updates that will be rolling out OTA
 

elliwigy

Retired Forum Moderator / Recognized Developer
XDA App Taskforce
The next few months, you will notice an enormous amount of PRL updates that will be rolling out OTA

you said that a few months ago.. not to troll but where do you get your information? for the most part only reliable information youve given is from prls that already exist.. you dont seem to be an expert and know sprints plans besides stuff your reading from there site and on the internet.. you also said wed see a huge increase in 3g everywhere and they would be using other frequencies.. this is a lie. they have same prl and same crap service where im at for over a year now.. ill believe it when i see it happen.. only improvement i see with data is when i use wifi lol. other than that the "now" network seems to be same old 1x speeds for over a year for me here

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gatesmarch123

Senior Member
Apr 14, 2010
729
106

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tensux

Senior Member
Nov 18, 2011
1,094
305
boston
I live just north of Boston, one of the cities that went online with the "optimized and enhanced 3G". See the results below: :screwy:


Sent from my SPH-D710 using xda app-developers app

Lol. You can't reply on that speed test app. Especially if you are not using I right. Look at the server you are testing. Now try hitting tool in the app and switch the server to a Boston one

Sent from my SPH-D710 using XDA
 

Whosdaman

Inactive Recognized Developer
May 9, 2008
5,673
1,408
Gainesville, Florida
you said that a few months ago.. not to troll but where do you get your information? for the most part only reliable information youve given is from prls that already exist.. you dont seem to be an expert and know sprints plans besides stuff your reading from there site and on the internet.. you also said wed see a huge increase in 3g everywhere and they would be using other frequencies.. this is a lie. they have same prl and same crap service where im at for over a year now.. ill believe it when i see it happen.. only improvement i see with data is when i use wifi lol. other than that the "now" network seems to be same old 1x speeds for over a year for me here

Sent from my SPH-D710 using xda app-developers app

Lol, you do know that I said by the end of 2012. And guess what, it's only September. Not only tht, but Sprint just confirmed basically all I said in that press release.

To be honest, I don't care whether you believe me or not. I tell you what I know and so far everything I have said still is true. The plans I was talking about will be finished by the end of 2014. Major network upgrades on 99% of towers don't occur over night. You are ignorant for thinking that, and should reread everything I said awhile ago again.

Again, there will be numerous prls rolling out as these 100 cities are lit up. And guess what, if you aren't in one of those areas, you aren't going to see improvements yet.
 
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tensux

Senior Member
Nov 18, 2011
1,094
305
boston
this is a 3g test in boston using 1337.prl
 

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  • 43
    Before I go into the full details of the project, let's go over what a PRL is, what it does, and why it matters to you.

    What Really is a PRL?

    "The Preferred Roaming List (PRL) is a database residing in a wireless (primarily CDMA) device, such as a cellphone, that contains information used during the system selection and acquisition process. In the case of R-UIM-based CDMA devices, the PRL resides on the R-UIM. The PRL indicates which bands, sub bands and service provider identifiers will be scanned and in what priority order. Without a PRL, the device may not be able to roam, i.e. obtain service outside of the home area. There may be cases where missing or corrupt PRL's can lead to a customer not having service at all.

    On many networks, regularly updating the PRL is advised if the subscriber uses the device outside the home area frequently, particularly if they do so in multiple different areas. This allows the phone to choose the best roaming carriers, particularly "roaming partners" with whom the home carrier has a cost-saving roaming agreement, rather than using non-affiliated carriers. PRL files can also be used to identify home networks along with roaming partners, thus making the PRL an actual list that determines the total coverage of the subscriber, both home and roaming coverage."

    Source: Wikipedia

    TLDR: The PRL tells a device what towers to connect to, which frequency to search on, and in what order to connect to them. This includes "on" and "off" network towers. PRLs do not effect 4G WiMax performance.

    Why Should I Care?

    The PRL directly effects the coverage you receive and the data speed performance of your device. Ensuring you have the latest PRL is critical to maintaining the best signal your device will get. However, there are a few "special" PRLs we can use in order to gain access to hidden features, such as 3G data roaming.

    So What is This About?

    I'm glad you asked. I've been working on this for a few months now and I'm now ready to go public in order to gain more statistical data from my fellow peers. I have a collection of PRLs that I have rigorously tested to see which ones give me the best performance. This isn't enough. I need real world testing for as many members as I can get.

    While I can't give the full details of my project away yet, let me assure you it will benefit everyone on Sprint. Phase 1 of my project has already started and here is how you can contribute:

    https://docs.google.com/spreadsheet/ccc?key=0ArqBGjrbNosddGR3OURoNnJLdTlTaEo1RmVEYjdVNlE

    The above document is open to everyone and can be edited by everyone. This spreadsheet will be used to compile data from everyone's usage of the PRLs available to us. Check the bottom of the file for sheet of each individual PRL. Each one has it's own sheet. Just add your data for which ever PRL you are testing.

    The tool accepted for measuring data speed is Speedtest.net. They are the industries leader in speed testing, and it is a very reliable application.

    If the PRL you are testing isn't there, I have included a template sheet so you can make your own sheet. Please stick to the format and be honest. This project is for everyone to benefit from, so don't ruin it for anyone. Also be sure you are adding your raw data to the correct PRL sheet. Little mistake like that can skew the data. Please test "Home" and "Roam" equally, I am trying to obtain the best performing PRL overall. I want to repeat that 4G WiMax is not effected by PRL, so do not include 4G in your testing.

    Be impartial, be true, be consistent, and most of all be precise. If you notice something is wrong, fix it. You can chat inside the document. Just check the top right hand side for the people viewing the document. I will check this document often and update it regularly.

    I have included the primary PRLs for testing in the 2nd post, and instructions how to manually update your PRL from a PC in the 3rd post. If you have any questions, please feel free to ask away.

    [UPDATE: 3/4/12]
    - Closed private testing
    - Added ##3432# to 3rd post

    [UPDATE: 3/6/12]
    - Revised 3rd Post
    - Added Nexus S 4G support
    - Added Disclaimer to 2nd Post about Network Vision PRLs

    [UPDATE: 4/2/12]
    - Phase 1 of private testing is through. Haven't posted results yet
    - Added new updated version of PRLs in 2nd post
    - Updated guides in 3rd post
    19
    PRL Information

    Mobile Broadband Corporate Sprint PRL
    - 11115 (Outdated)
    - 11117 (Outdated)
    - 11119

    Mobile Broadband Corporate Sprint PRL for Network Vision*
    - 12117 (Outdated)
    - 12119

    Corporate Sprint PRL
    - 61085

    Corporate Sprint PRL for Network Vision*
    - 22085

    Sprint PRL for Network Vision*
    - 21083 (Outdated)
    - 21085 (Outdated)
    - 21086

    Sprint PRL
    - 60683 (Outdated)
    - 60685 (Outdated)
    - 60686

    Modified Verizon PRL
    - 00001 (Outdated)
    - 00002

    * If your device is not a "Network Vision Ready" device, these PRLs will not change that fact. It does not hurt to test these as they might improve the performance of your device.
    15
    How to Update PRL Manually:

    You must have your respected device's drivers installed prior to starting.

    1. Download and Install QPST 2.7 - Build 366
    2. Open QPST Configuration in the "QPST" folder under Programs
    3. Disable debugging on your device
    4. Type one of the following codes in you respected device's dialer and switch to "CP" or "Modem"
      • Epic 4G Touch: ##8778#
      • HTC EVO 3D: ##3424#
      • Nexus S 4G: *#*#8778#*#*
    5. Plug in your device
    6. Click on the “Ports” tab and “Add a new port”
    7. Select the “COMXX – USB\QC Diagnostic” and click ok. If you don’t see a port, uncheck the box for "Show Serial and USB/QC Diagnostic ports only" and add all of the USB/Unknown ports. One of them should show an active phone.
    8. Click “Start Clients” on the top of the program and open Service Programming
    9. Select your device
    10. Click "Read from Phone" and enter "000000"
    11. Click the "Roam" tab
    12. Click "Browse" and select the PRL you wish to use
    13. Click "Write to Phone"
    14. Phone should reboot with the PRL you specified

    How to Pull PRL From Device:

    You must have your respected device's drivers installed prior to starting.

    1. Download and Install QPST 2.7 - Build 366
    2. Open QPST Configuration in the "QPST" folder under Programs
    3. Disable debugging on your device
    4. Type one of the following codes in you respected device's dialer and switch to "CP" or "Modem"
      • Epic 4G Touch: ##8778#
      • HTC EVO 3D: ##3424#
      • Nexus S 4G: *#*#8778#*#*
    5. Plug in your device
    6. Click on the “Ports” tab and “Add a new port”
    7. Select the “COMXX – USB\QC Diagnostic” and click ok. If you don’t see a port, uncheck the box for "Show Serial and USB/QC Diagnostic ports only" and add all of the USB/Unknown ports. One of them should show an active phone.
    8. Click “Start Clients” on the top of the program and open Service Programming
    9. Select your device
    10. Click "Read from Phone" and enter "000000" or your MSL
    11. Click "Save to File" and save the file
    12. Open RL Editor in the QPST folder
    13. Go to "File" then "Open" and navigate to the location where you saved the file
    14. Open the .r0l file
    15. Go to "File" then "Save As" and save the file as a .prl file type.

    If either are unclear in any way, please let me know.
    6
    Okay to be honest, the reason why I haven't updated this thread and continued the project is due to internal training and information I have received about Sprint. In the next 6 months to a year, Sprint will be producing more PRL's than it has ever made total due to the constant changes to the towers by Network Vision.

    It is very very important that everyone stay on the latest PRL as much as possible to ensure they do not miss out on the updated coverage. These corporate PRLs are great and all, but if we can't keep up with them, it is better to stick with the latest "stock" PRL than the CL PRLs. There are so many changes coming to Sprint and their network it is unbelievable. So much so that it is extremely hard for me to go over every single one of them in just one post.

    One thing I have seen that PRL will affect the most is coverage. I have seen an internal coverage map from Sprint for their on-network 3G and 4G data/voice network and it is beautiful. The coverage map has a larger footprint than Verizon currently has. Along with the increased coverage, Sprint is also upgrading the capacities on all of their towers to handle the excessive strain on the towers. This is going to increase data speeds for everyone. As well the additional 800MHz spectrum will bring even better data speeds to those of you who can handle the 800MHz frequency.

    In absolute honesty, if you have been with Sprint for this long and put up with them, you might as well put up with them for 1 more year, because it is getting nothing but better. Even here in my home town, Lake City, Florida, where Nextel dominates. They are already starting work on the towers to equip them with the new Network Vision equipment and evaluating which Nextel towers to keep. I'll fill everyone in more as I get more information, but as it stands right now Sprint is the worst it'll ever be. It is only going to get much better from here. By the end of this year, we are on pace to surpass AT&T in LTE coverage and cities supported.
    5
    11121 PRL pulled from my Epic 4g touch....