I have unlocked s6 and APN won't stick. When put into network mode automatic I get to input APN and it works until I let phone turn off screen or I manually hit power button. When I get back into phone the APN setting I input, for t-mobile, are gone. There are Sprint APN listed but I can't choose nor add or delete any. If I choose LTE GSM auto prl through one of the service menu's I am able to again choose APN and input what I want but at sleep and rewake the phone goes back to not listing the APN and having greyed out sprint APN. Phone works but have data issues here and there and sometimes have to reboot to get lte to stick. Lock screen sometimes shows T-mobile as carrier but usually shows Sprint. I can still make calls and use LTE data on my t-mobile sim when it says Sprint as carrier but I think my data and mms issues would be fixed if I could get the dang APN to stick. Any ideas? Different rom? I'm on 5.1.1 OJ7
littlebeeper said:
I have unlocked s6 and APN won't stick. When put into network mode automatic I get to input APN and it works until I let phone turn off screen or I manually hit power button. When I get back into phone the APN setting I input, for t-mobile, are gone. There are Sprint APN listed but I can't choose nor add or delete any. If I choose LTE GSM auto prl through one of the service menu's I am able to again choose APN and input what I want but at sleep and rewake the phone goes back to not listing the APN and having greyed out sprint APN. Phone works but have data issues here and there and sometimes have to reboot to get lte to stick. Lock screen sometimes shows T-mobile as carrier but usually shows Sprint. I can still make calls and use LTE data on my t-mobile sim when it says Sprint as carrier but I think my data and mms issues would be fixed if I could get the dang APN to stick. Any ideas? Different rom? I'm on 5.1.1 OJ7
Click to expand...
Click to collapse
This is a really old thread, but since I've been struggling with this issue for several months, I think this is the place for a reply.
There are several problems with a "sprint" unlocked S6, but the most annoying (other than hands free activation) is the APN settings going back to default and being "locked" until you reboot the phone. When in this "locked" state - you will not be able to receive MMS messages.
I have found that deleting (or simply renaming) the customer.xml (/system/csc/customer.xml) stops the resetting of the APN - and interestingly opens up the additional configurations under Mobile Networks -> Network Mode to choose GSM/WCDMA/LTE.
After fixing this and fixing hands free activation (https://forum.xda-developers.com/sprint-galaxy-s6/help/hands-free-activation-t3199214) the phone now performs VERY well on T-Mobile, just like it belongs there
I just checked my device on 7.0 Nougat and I can't find that file (there is no folder in root>system called "csc"). Any idea how I can fix this?
Bageland2000 said:
I just checked my device on 7.0 Nougat and I can't find that file (there is no folder in root>system called "csc"). Any idea how I can fix this?
Click to expand...
Click to collapse
You may not be allowed to view certain system files for some reason. I believe you have to be rooted to delete them. You could also try the system update first if you are stock. But probably best bet either way would be to start with clean install of whatever ROM you use or the stock ROM from TWRP. I've been able to delete the files from skyhigh and Rick Wardenberg's ROM. GL!:good:
---------- Post added at 12:06 PM ---------- Previous post was at 12:04 PM ----------
Bageland2000 said:
I just checked my device on 7.0 Nougat and I can't find that file (there is no folder in root>system called "csc"). Any idea how I can fix this?
Click to expand...
Click to collapse
You may not be allowed to view certain system files for some reason. I believe you have to be rooted to delete them. You could also try the system update first if you are stock. But probably best bet either way would be to start with clean install of whatever ROM you use or the stock ROM from TWRP. I've been able to delete the files from skyhigh and Rick Wardenberg's ROM. GL!:good:
Edit: I recommend es root explorer to do the dirty work.
if it's not too late
First you need your msl code I can help if not.then use data daily code or an app idonee don't get a fake I found on code after you do that you just need to change mms and apn setting see screenshot.i have 920p on 7.0 stock rooted running on t-mobile lte get mms everything
Related
I own a ZL C6502 with 4.1.2 firmware and root access.
I decided to try out the new 4.2.2 firmware (Xperia ZL_10.3.A.0.423_Indonezia С6502.ftf ) After flashing it i noticed that the 3g isn't working. I flashed back to 4.1.2 firmware (Xperia ZL C6502_10.1.A.1.434_global) but the 3g issue is still present. I can make calls no problem but no internet through the data connection.
Every time i flashed a new firmware after first reboot i get this message : "Factory startup service please wait for power off button"
Some help would be appreciated.
asilviug said:
I own a ZL C6502 with 4.1.2 firmware and root access.
I decided to try out the new 4.2.2 firmware (Xperia ZL_10.3.A.0.423_Indonezia С6502.ftf ) After flashing it i noticed that the 3g isn't working. I flashed back to 4.1.2 firmware (Xperia ZL C6502_10.1.A.1.434_global) but the 3g issue is still present. I can make calls no problem but no internet through the data connection.
Every time i flashed a new firmware after first reboot i get this message : "Factory startup service please wait for power off button"
Some help would be appreciated.
Click to expand...
Click to collapse
The "Factory startup service please wait for power off button" only happens at the first boot right after a flash which is normal. I hate to ask dumb questions but obviously your APN settings were wiped after the flash, have you reconfigured your APN settings to make data work with your provider?
Crash338 said:
The "Factory startup service please wait for power off button" only happens at the first boot right after a flash which is normal. I hate to ask dumb questions but obviously your APN settings were wiped after the flash, have you reconfigured your APN settings to make data work with your provider?
Click to expand...
Click to collapse
Haven't reconfigured the APN as i have no clue how to do it. I will search on google but if you have any suggestions on how to do it please do so. Thanks.
asilviug said:
Haven't reconfigured the APN as i have no clue how to do it. I will search on google but if you have any suggestions on how to do it please do so. Thanks.
Click to expand...
Click to collapse
Google your 'carrier' apn, or easiest way is bring it to the 'carrier' store they will set it up for you.
APN setting is in settings/More.../Mobile networks/Access Point Names - hit menu (the three dots) choose 'New APN'. Enter the result search from google.
Sent from my C6506 using Tapatalk 2
no network service after update on S2 i727 skyrocket
I lost my service to. I have phone service and wifi but no data. I reconfigured my APN settings. Ive even been in contact with my carrier which is Net10"bring you own phone" but they couldnt figure it out either. Any suggestions?
wjones2794 said:
I lost my service to. I have phone service and wifi but no data. I reconfigured my APN settings. Ive even been in contact with my carrier which is Net10"bring you own phone" but they couldnt figure it out either. Any suggestions?
Click to expand...
Click to collapse
Try this easy solution. Turn on your phone, remove the sim card and then put it back and turn on your phone. Maybe the configuration will pop up by itself as it should.
When i had my similar problem i went and manually configured the settings. But it also worked out by itself when i removed the sim card afterwards.
Good luck!
Hello, I am new here but have intermediate experience with devices.
Alright time to throw everyone for a loop lol, hopefully someone can help me out.
Here is my problem:
My phone is not connected to a network.
Here is what I have:
Samsung Galaxy S III with Metro PCS (NOT rooted, and with latest PRL and software updates)
What happened:
I woke up yesterday to find my phone not on Metros network, and not on a partner network. My 4G still works though, I can access internet but just can not call/txt or receive either.
In Settings > About Device > Status, here are some of the satus'...
Network: Searching for Service
Signal Strength: -93dBm 47asu
Mobile Network Type: LTE:14
Service State: Out of Service
Roaming: Not Roaming
My Phone Number: Unknown
Min: Unknown
PRL Version: 0
Things I've Done So Far:
Contacted Metro through phone support and Facebook support, neither could help fix the problem.
Took my phone into a Metro store and they wont honor a repair since my screen has a hairline crack in the screen. (which I will also say, they noted that already on my account...)
I've already went to *#22745927 and enabled the hidden menu multiple times (cause it disables with each restart) and I've went to **772 to view my MDN and MSID (MIN) and the MDN shows nothing and MSID has a 10 digit number (that's not the right number for my account), so I tried to edit them to the numbers that I know are correct and after I hit done, the phone restarts but then when it comes back on, nothings changed, and when viewing **772 again, the numbers don't save in the fields.
I know *#197328640# lets you access the service menu, but I don't really feel like touching any of that and making things worse (unless someone knows how to fix this issue through the service menu then ill do it)
Now that my long winded speech is done, its your turn to try and solve this dilemma and help me out please
I hope this is the right section to post in, sorry if it is not.
Thanks in advance to any help ^^ if anyone's got any other questions, ill try to answer them best as I can.
With your Device not being Rooted, the options are limited. Also a bit more clarification. You say you have no Signal / Network. But yet you also state you have 4G, and can access the Internet. That is a bit contradictory. It sounds like you may need to have the Device Flashed to Metro again, as something may have gone wonky.
Try to dial *228 then call and see if it will go through an activation process of some kind. If it does, let it go through until successful then reboot your phone.
Sent from my SPH-L710 using Tapatalk 4
Dial code ##72786# is supposed to reactivate you phone. That might fix your problem. Alternatively, you can try writing a PRL that you know works with Metro.
You can dial ##DATA# and go to View. Some ROMs (even stock ROMs) have a "Write PRL" option. If your ROM does not have that, you can try the HiddenMenu.apk trick and see if that fixes it for you.
If PRL is 0, then it is not scanning for sites. LTE is handled by a different function, not PRL. Voice/Text rely on PRL to function. Hopefully the PRL fix helps you.
I have attached hiddenmenu.apk that has PRL Write enabler. Just download and install as normal app. If it does not work and breaks your dialer, simply reboot. The HiddenMenu is only temporary until you reboot, it reverts back to hiddenmenu under /system.
prboy1969 said:
With your Device not being Rooted, the options are limited. Also a bit more clarification. You say you have no Signal / Network. But yet you also state you have 4G, and can access the Internet. That is a bit contradictory. It sounds like you may need to have the Device Flashed to Metro again, as something may have gone wonky.
Click to expand...
Click to collapse
Yea I'm not totally sure why I can access 4G data but not the network.
I brought my phone into a Corporate Metro store and they told me it might be a faulty CDMA antenna but I don't think an antenna issue would put my PRL to 0 and not show my phone number or MIN.
haoleflip said:
Try to dial *228 then call and see if it will go through an activation process of some kind. If it does, let it go through until successful then reboot your phone.
Sent from my SPH-L710 using Tapatalk 4
Click to expand...
Click to collapse
Cant use the dialer, im greeted with a "network not available" pop-up.
Ascertion said:
Dial code ##72786# is supposed to reactivate you phone. That might fix your problem. Alternatively, you can try writing a PRL that you know works with Metro.
You can dial ##DATA# and go to View. Some ROMs (even stock ROMs) have a "Write PRL" option. If your ROM does not have that, you can try the HiddenMenu.apk trick and see if that fixes it for you.
If PRL is 0, then it is not scanning for sites. LTE is handled by a different function, not PRL. Voice/Text rely on PRL to function. Hopefully the PRL fix helps you.
I have attached hiddenmenu.apk that has PRL Write enabler. Just download and install as normal app. If it does not work and breaks your dialer, simply reboot. The HiddenMenu is only temporary until you reboot, it reverts back to hiddenmenu under /system.
Click to expand...
Click to collapse
I will try this tomorrow after I get out of work, I forgot to do it tonight.
Slimjim2424 said:
Yea I'm not totally sure why I can access 4G data but not the network.
I brought my phone into a Corporate Metro store and they told me it might be a faulty CDMA antenna but I don't think an antenna issue would put my PRL to 0 and not show my phone number or MIN.
Click to expand...
Click to collapse
A CDMA Antenna being loose would not cause the Device to wipe data.
Slimjim2424 said:
Cant use the dialer, im greeted with a "network not available" pop-up.
Click to expand...
Click to collapse
That's very odd. Have you tried it with WiFi on ?
prboy1969 said:
A CDMA Antenna being loose would not cause the Device to wipe data.
That's very odd. Have you tried it with WiFi on ?
Click to expand...
Click to collapse
I tried to use the dialer with Wifi on, with 4G Data on. Even tried to use Metros "Joyn" service which lets you make calls and texts over data connection but the issue is, I did a factory reset already and by doing that it wiped the Joyn data from my phone. Now when I go to start "Joyn" up, it says it needs to be able to connect to Metros Network for the first time set-up so I cant do that since I cant connect to the mobile network (CDMA).
I still need to try what Ascertion said.
Ascertion said:
I have attached hiddenmenu.apk that has PRL Write enabler. Just download and install as normal app. If it does not work and breaks your dialer, simply reboot. The HiddenMenu is only temporary until you reboot, it reverts back to hiddenmenu under /system.
Click to expand...
Click to collapse
Downloaded that file and there is no .apk file in it, so there is nothing to install...
Slimjim2424 said:
Downloaded that file and there is no .apk file in it, so there is nothing to install...
Click to expand...
Click to collapse
Try this post.
http://forum.xda-developers.com/showpost.php?p=40196644&postcount=50
Ascertion said:
Try this post.
http://forum.xda-developers.com/showpost.php?p=40196644&postcount=50
Click to expand...
Click to collapse
Yea I went there, I asked how to install it since I don't see a .apk file anywhere and they said the APK is the download.
Usually you can download a file with the extension .apk then install it from your phone easily but since there is no file in that download with the file extension ".apk" then I don't see how I can install...
Quick update:
Got that download to change to .APK by simply renaming the file extension.
But after I loaded it to my phone and tried running it, it greeted me with an "Application Not Installed" message.
Updated to 4.4.2 today via ota. Was originally a Verizon 8.3 lte, switched to t-mobile. Was able to toss a sim card in and update apn ran fine. But after ota update today it no longer reads tmobile sim card. Have updated apns, continuing to get notifications that tablet activation incomplete, your tablet will try again when you restart. Have restarted plenty of times, on boot get welcome to Verizon red startup screen. Then goes to straight to screen unlock. Anyone with a idea of how to fix this. Tablet is rooted.
Casetheace said:
Updated to 4.4.2 today via ota. Was originally a Verizon 8.3 lte, switched to t-mobile. Was able to toss a sim card in and update apn ran fine. But after ota update today it no longer reads tmobile sim card. Have updated apns, continuing to get notifications that tablet activation incomplete, your tablet will try again when you restart. Have restarted plenty of times, on boot get welcome to Verizon red startup screen. Then goes to straight to screen unlock. Anyone with a idea of how to fix this. Tablet is rooted.
Click to expand...
Click to collapse
same here... I skipped the initial setup steps. Device shows no network connection to t-mobile. When I go to Settings-> About Tablet-> Network, com.android.phone crashes
To go back to 4.2.2:
Root, Flash aboot.img and TWRP.img
http://forum.xda-developers.com/showpost.php?p=54533937&postcount=2
Then reflash 4.2.2 TWRP backup (dunno if you can do direct flash without factory reset... try?)
http://forum.xda-developers.com/showthread.php?t=2768048
most likely you'll lose your files/apps/settings... unfortunate
paperWastage said:
same here... I skipped the initial setup steps. Device shows no network connection to t-mobile. When I go to Settings-> About Tablet-> Network, com.android.phone crashes
To go back to 4.2.2:
Root, Flash aboot.img and TWRP.img
http://forum.xda-developers.com/showpost.php?p=54533937&postcount=2
Then reflash 4.2.2 TWRP backup (dunno if you can do direct flash without factory reset... try?)
http://forum.xda-developers.com/showthread.php?t=2768048
most likely you'll lose your files/apps/settings... unfortunate
Click to expand...
Click to collapse
Mine is still working on T-Mobile after 4.4.2 ota . i did need to redo the apn though. I also get the activation
Notification but i just ignore it and my lte data works just fine.
paperWastage said:
same here... I skipped the initial setup steps. Device shows no network connection to t-mobile. When I go to Settings-> About Tablet-> Network, com.android.phone crashes
To go back to 4.2.2:
Root, Flash aboot.img and TWRP.img
http://forum.xda-developers.com/showpost.php?p=54533937&postcount=2
Then reflash 4.2.2 TWRP backup (dunno if you can do direct flash without factory reset... try?)
http://forum.xda-developers.com/showthread.php?t=2768048
most likely you'll lose your files/apps/settings... unfortunate
Click to expand...
Click to collapse
Mine is still working on T-Mobile after 4.4.2 ota . i did need to redo the apn though. I also get the activation
Notification but i just ignore it and my lte data works just fine.
I restored 4.2.2, 4G still doesn't work
restored the modem from 4.2.2, works in 4.2.2 and 4.4.2 now
http://code.ngvincent.com/android/modem.4.2.2.img
needs root
Code:
adb shell
su
#backup current modem
dd if=/dev/block/platform/msm_sdcc.1/by-name/modem of=/sdcard/modem.backup.img
#restore modem from 4.2.2
dd if=/sdcard/modem.img of=/dev/block/platform/msm_sdcc.1/by-name/modem
doesnt work for me even if i flash the modem. do you get the activation notification when you reboot your device paper?
Doesn't work
Same. Anyone have a fix?
I fixed mine. I had to reactivate it with a Verizon sim card. Go through the whole process. then i was able to pop in a tmobile and add the APN settings for Tmobile.
Chinese281 said:
I fixed mine. I had to reactivate it with a Verizon sim card. Go through the whole process. then i was able to pop in a tmobile and add the APN settings for Tmobile.
Click to expand...
Click to collapse
Did you use an active Verizon sim ?
We are getting a new Verizon G pad. Do we need to insert a Verizon sim, upgrade to kitkat and then insert T-mobile sim?
Thanks for your help
zevelking said:
Did you use an active Verizon sim ?
We are getting a new Verizon G pad. Do we need to insert a Verizon sim, upgrade to kitkat and then insert T-mobile sim?
Thanks for your help
Click to expand...
Click to collapse
Mine was already on 4.4.2. I just inserted an active Verizon sim card, went through the setup process, then swap out the sim cards.
i run this line of code and i get operation not permitted , im not sure what im doing wrong. ive tried it over a few diffrent computers, and have also ran adb of the tablet it self thru term... any ideas?
dd if=/sdcard/modem.img of=/dev/block/platform/msm_sdcc.1/by-name/modem
also its rooted with TWRP and CM12.1 installed but i have no cell service the options in settings are grayed out i cant enter and settings manually. and the Network app wont work to change anything
want to set it up to runn off AT&T the best i can
Did you give terminal Superuser permissions with "su"?
yes super user was granted
I don't know what's wrong then.
You could take my ROM zip from my signature, delete all the partition IMG files out of it, put the modem.img you want in, and edit the updater-script to remove anything having to do with flashing the other partitions, then flash the resulting zip in TWRP. Make sure you know how to recover and have everything saved that you want to keep from internal storage in case you do something wrong, though.
---------- Post added at 08:06 AM ---------- Previous post was at 08:04 AM ----------
You know, I haven't been able to get mobile data working on any CM-based ROM on the VK810 yet, so that's probably your trouble. If you want mobile data you'll have to go stock. Some people had some luck on CM-based ROMs but then eventually it stopped working. I didn't have any luck at all.
Thank you for the info, I think I'll just wait for a possible workaround, until then I'll just use internet share from my phone.... That and I haven't the foggiest idea hownto do what you told me to do with the updater and what not lol , so rather than really screw things up, I'll just stick with WiFi..
Has anyone found a way to flash / change the PRL on the Note 4?
I found a way to flash a PRL. I was able to successfully load older prl that are withing the same series. I used DFS CDMA TOOL v. 14.10.21.0.
1. Turn off wifi and data on the phone.
2. press ##3424# on phone.
3. Qualcomm usb setting
4. Select RMNET+DM+MODEM.
5. ON DFS Click on port on and select the port your phone is displayed.
6. Enter your MSL right below.
7. Once you enter the MSL click the SPC icon.
8. Next click on NAM.
9. On the bottom right hand corner click Load and select the PRL you want and click WRITE.
10. Return to ##3424#, Qualcomm usb setting, select MTP and Restart.
11. Enable your wifi and data.
I was unable to load any 56*** series PRL.
I was able to flash 56022 with the steps on post #2. Below is the link to all PRL.
http://forum.xda-developers.com/showthread.php?t=1880781
Thanks for the info. I was able to flash the 503 PRL from S4GRU, but, the one I would prefer, 513, won't take. I may have to try again when the kids are in bed tonight. I think it's based on a 56xxx series PRL, so it might just flat out not work.
I'm glad to see that at least you were able to flash an older one. I tried various ones from the 56*** series and no luck. Hopefully you or someone else gets the ball from here. Im glad i was able to go back to an older prl. Now my phone is not switching towers every 2 secs.
Thanks! Unfortunately I had the same issue with 56xxx prls too...none of them would flash ..and that's the best one too!!
I goofed around with this a little this morning and had no luck with any Corporate PRLs. Just says process destroyed every time I hit write.
M4ver1ck said:
I goofed around with this a little this morning and had no luck with any Corporate PRLs. Just says process destroyed every time I hit write.
Click to expand...
Click to collapse
Same here from day one.
Will PRL change allow simo voice/data calls?
on my old phones i was able to do both phone call and data...
primarily when driving using google maps and getting an incoming call./text. now with spark i cant do this .
will updating a pRL... lets say to a tmobile tower allow me to do that again?
also back with i had an s4 and put a CM11 rom on it. that room gave me the option to make all calls VoIP.... anyway way to add that single option to a rom??
dademon02 said:
on my old phones i was able to do both phone call and data...
primarily when driving using google maps and getting an incoming call./text. now with spark i cant do this .
will updating a pRL... lets say to a tmobile tower allow me to do that again?
also back with i had an s4 and put a CM11 rom on it. that room gave me the option to make all calls VoIP.... anyway way to add that single option to a rom??
Click to expand...
Click to collapse
No...
55022
Update your PRLs.
55022 is out. Im stock with DM not frozen, obtained via the Update PRL .
I was able to flash 56022 with the steps on post #2. Below is the link to all PRL.
http://forum.xda-developers.com/showthread.php?t=1880781
I have a much simpler option and can confirm this works just fine.
If you are rooted but do not have a custom recovery you can download the zip file in this link and extract HiddenMenu.apk located in the file under /system/app and manually push it into the /system/app folder on your phone. Then change the permissions to 0755
http://forum.xda-developers.com/showthread.php?p=54201284
(The file says deodexed but I'm running stock odexed rom and it worked just fine, also remember to back up original HiddenMenu.apk)
After that follow these steps
1. Extract TEST.prl from the PRL Zip that you want to flash
2. Place TEST.prl in the root of the /sdcard folder
(DO NOT put it in /mnt/extSdCard)
3. Turn off WIFI and Mobile Data on the phone
4. Dial ##DATA# (##3282#) and select "View"
5. Select PRL WRITE then hit the button labeled "PRL WRITE" (your device will reboot at this point)
6. Once your device turns back on, turn WIFI and Mobile Data back on.
7. Goto Settings -> About device -> Status and confirm "PRL version" matches the version you wished to flash
Hope this helps! please thank me if so:thumbup:
Was able to get 56022 as well. Can anybody recommend a paticular prl for best lte connectivity?
LTE is not affected by the PRL.
pilotmills said:
LTE is not affected by the PRL.
Click to expand...
Click to collapse
Ok, I just glanced over some of the links and thought the PRL determined what towers were available. So it only affects roaming?
PRL = preferred roaming list. Your phone will always scan for any of Spirit's LTE bands first. If it finds nothing on those three bands, it will then look for a Sprint CDMA (3G) signal. Failing to find one, it will then look to the PRL file to see what networks and at what speeds you (Sprint) are authorized to connect to and in what order. In a nutshell anyway.
pilotmills said:
PRL = preferred roaming list. Your phone will always scan for any of Spirit's LTE bands first. If it finds nothing on those three bands, it will then look for a Sprint CDMA (3G) signal. Failing to find one, it will then look to the PRL file to see what networks and at what speeds you (Sprint) are authorized to connect to and in what order. In a nutshell anyway.
Click to expand...
Click to collapse
Ahh, makes sense. Was just looking for any way to get better LTE connectivity and have the phone hold that connection.
This process works on OG5. Flashed 56025 PRL
Hi,
I've upgraded my note 4 to MM using the "Bootloader unlock and safe upgrade to MM "post from the general section. Now I'm having the next problems:
1.-I'm using a GSM Sim Card and it works but when I try to change the network mode I only get LTE/CDMA and CDMA, if I select one of those the networks, it stops working, and to go back I have to do a Network Settings Reset.
2.-I cant use MMI codes from my operator, I think that this might be due to the first problem.
What can I do to fix this?
Flash jasmine rom instead
Sent from my SM-N910V using Tapatalk
tribalb said:
Flash jasmine rom instead
Sent from my SM-N910V using Tapatalk
Click to expand...
Click to collapse
Is this the only solution? install another ROM?
Same problem on 5.1.1. Non VZ SIM, two phones (both VZ Note 4's) - the 'Global' network mode option disappears, as does the entire 'APN' button. Restoring to full 5.1.1 (non rooted, etc) resolves this. It appears that during the original setup wizard stage, something (Knox? License Agent? Dunno?) does something and then I can use my non-VZ SIM.
The same thing during a rooted/partial-system-5.1.1 (systemonlyN910V-5.1.1.tar) + factory reset, there is a 'Knox has stopped responding' and the SIM never seems to work, and the network mode options do not allow me to select Global, or input an APN (there is no APN button).
Same thing but *without* wiping "data" (ie, not selecting 'factory reset'), the SIM works, or rather I can select 'Global' as my network mode, and the APN options are available.
Unfortunately I also have to go thru the process of removing KingRoot and the other junk at this point.
My theory at this morning is that there is a setting on 'data' that Knox applies during the setup wizard(s) that affects how the network options work with a non-vz SIM.
I suspect that if you have a normal VZ SIM and go thru the root process above, you probably have limited (fixed) network options but they are the settings that work with vz.
Some or all of the above may be totally wrong - I'm learning daily and have lots of learning left to do.