Database Develop

Guide - Unlock XT862 for T-mobile/ATT

Thought I would share based on my experiences on trying to get this phone to work on t-mobile. It works on ATT 3g/T-mobile Edge, but still a pretty cool phone to have.
Also another note, this is a mod that will only go through on Windows. You will need ROOT EXPLORER app for this method to work.
1 - Make sure you are on the stock XT862 ROM, if you aren't flash it via this method found here: http://rootzwiki.com/topic/4370-sbf-droid-3-fastboot-files-55959-and-56890/
2 - Make sure your phone is rooted, if not download the following and follow the steps found here: http://www.psouza4.com/droid3/
3 - Unlock the phone. This can be accomplished by purchasing the unlock code, and later entering the code upon insertion of a sim card. (T-mobile ATT sim cards will work, but you will get an error saying UNLOCK FAILED, this is NORMAL do not freak out)
4 - Download the following files and unzip it to your desktop: http://www.mediafire.com/?y1wjw775v8itsx3
5 - Click Start and open cmd.
6 - Type in the following in cmd:
'cd desktop'
'cd fastboot'
'moto-fastboot flash radio radio.img'
ONCE it flashes, then enter:
'moto-fastboot reboot'
7 - Use root explorer to push the build.prop into the system folder
8 - Reboot, select GSM/UMTS in Network Settings.
AND BAM now it works. If there is any confusion please let me know.

Nice! Is that the XT883 radio you're flashing or a real unlocked (and signed) XT862 radio?
Also - change
Code:
ro.mot.phonemode.vzwglobalphone=1
to
Code:
ro.mot.phonemode.vzwglobalphone=0
in build.prop to get normal reading on signal strength indicator.
You can also change
Code:
ro.telephony.default_network=7
to
Code:
ro.telephony.default_network=3
so phone starts automatically in GSM/UMTS mode after hard reset.

Can anyone confirm that it's running on AT&T with 3G/4G?
Sent from my Droid Razr using xda premium

MeNaCe2s0cieTy said:
Can anyone confirm that it's running on AT&T with 3G/4G?
Sent from my Droid Razr using xda premium
Click to expand...
Click to collapse
it has att 3g bands you can check for yourself over at gsm arena.

leobg said:
Nice! Is that the XT883 radio you're flashing or a real unlocked (and signed) XT862 radio?
Also - change
Code:
ro.mot.phonemode.vzwglobalphone=1
to
Code:
ro.mot.phonemode.vzwglobalphone=0
in build.prop to get normal reading on signal strength indicator.
You can also change
Code:
ro.telephony.default_network=7
to
Code:
ro.telephony.default_network=3
so phone starts automatically in GSM/UMTS mode after hard reset.
Click to expand...
Click to collapse
Thanks man I'll reupload when I get back home with the edited bits . It is the XT883 radio.

Nice Guide!
I've read some people have had trouble unlocking the D3....and apparently it could be due to it being used on the Verizon network who then alter the unlock code via some update.
Anyone know if there is any truth in this? (I'm awaiting the delivery of a used D3 so would be handy to know).

fl4r3 said:
Nice Guide!
I've read some people have had trouble unlocking the D3....and apparently it could be due to it being used on the Verizon network who then alter the unlock code via some update.
Anyone know if there is any truth in this? (I'm awaiting the delivery of a used D3 so would be handy to know).
Click to expand...
Click to collapse
Even after the update, if you restore it to the first link and then follow the steps, you will be fine. It can still be unlocked.

Awesome! I am about to try this on my friend's droid 3. Are there issues with the market (as some have mentioned in a previous thread)?
---------- Post added at 12:10 PM ---------- Previous post was at 12:00 PM ----------
I am stuck on <waiting for device> in the command prompt after telling it to flash the radio. What sort of USB connection should I be selecting?
EDIT: I'm an idiot.... I figured it out!

Is anyone else who is using this method on AT&T experiencing super slow data speeds? I have tried the sim card in an at&t branded phone and it seems to work ok. On the Droid 3, I am getting a ping of 2500~ ms, and speeds in the 15-60kbps range.

I can't seem to add an APN and connect to the 3G network. Does anyone else have this issue? I am using a Bell SIM at the moment

Follow all the steps, no luck here
When I put the unlock code, phone shows for a sec "requesting unlock" and goes back to a subsidy lock message with a discard dialog box.
After that, I followed all other steps, and still enter unlock code appears
Any ideas?
I dont have an att sim card, Im just using foreign sim cards cause Im outside US.

geek_riot said:
Is anyone else who is using this method on AT&T experiencing super slow data speeds? I have tried the sim card in an at&t branded phone and it seems to work ok. On the Droid 3, I am getting a ping of 2500~ ms, and speeds in the 15-60kbps range.
Click to expand...
Click to collapse
You can always call the carrier and make sure they are allowing your phone to connect. I'm not sure if this is the problem, but I read about another AT&T branded 4G phone (the D3 will never get 4G) getting only edge because the carrier thought it was foreign, and they just called in and gave the IMEI number to get access.
The customer service rep may not understand your problem, but just tell them the truth that you want to use your compatible device on your valid account and they should redirect you to someone who can help.
I can verify this works on T-Mobile and AT&T since I've tested it on both. Didn't test 3g on AT&T though cuz I didn't think about it lol. I know it allows the connection to umts in the settings though.
The OP poster helped me get it working on my phone just make sure you follow the directions closely and it's pretty simple. If your unlock codes aren't working because you got them off the internet, you may need to have the phone put on Verizon temporarily to get them to give you a code. Just ask a friend with a valid account to help you out.
Good luck to everyone, this is a great hack that definitely saves some money while letting us use this cool phone. I will have to edit my build.prop as mentioned above to fix the reboot network loss problem, thanks for that as well!
Droid 3 with stock xt862 ROM working on T-Mobile via xt883 radio.img & custom build.prop

If verizon changed the codes while phones are connected to his network, changes could only be stored on a new bootloader.
There is no other unwritable part on the phone.
Wonder if the original poster used an ebay code or a verizon one...

Nice job! Pretty amazing what can be done with fastboot and signed radio images!

Custom ROM
What will happen if somebody follows this procedure and unlock the phone for AT&T but afterwards flash another rom? Will the radio still be unlocked for AT&T?

koukobin said:
What will happen if somebody follows this procedure and unlock the phone for AT&T but afterwards flash another rom? Will the radio still be unlocked for AT&T?
Click to expand...
Click to collapse
As long as that ROM you're flashing does not have radio image in it, you should be fine. If you meant sim lock - once unlocked, it will remain unlocked forever.
Sent from my HTC Desire Z using Tapatalk

I was asking about radio unlock, i know sim unlock is permanent. But has anyone tried to install any rom after the radio unlock and if yes which one?
thanks

koukobin said:
I was asking about radio unlock, i know sim unlock is permanent. But has anyone tried to install any rom after the radio unlock and if yes which one?
thanks
Click to expand...
Click to collapse
Just as @leobg said,
leobg said:
As long as that ROM you're flashing does not have radio image in it, you should be fine...
Click to expand...
Click to collapse
Now, I haven't tried flashing another ROM since flashing the xt883 radio.img, because I really don't mind the stock ROM with some build.prop tweaks and the help of Zeam Launcher. I would assume that any ROM you flash would cause the build.prop and radio.img to be replaced with new ones, made specifically for that ROM. You should probably consult with the developer of the ROM you want to use, and ask them if the build.prop changes specific to this process will have issues with their ROM. The xt883 radio.img shouldn't have any conflicts, but I believe it will still require the custom build.prop file which is found in the OP, or at a minimum the specific changes which allow this tweak to work.

BenSWoodruff said:
Just as @leobg said,
Now, I haven't tried flashing another ROM since flashing the xt883 radio.img, because I really don't mind the stock ROM with some build.prop tweaks and the help of Zeam Launcher. I would assume that any ROM you flash would cause the build.prop and radio.img to be replaced with new ones, made specifically for that ROM. You should probably consult with the developer of the ROM you want to use, and ask them if the build.prop changes specific to this process will have issues with their ROM. The xt883 radio.img shouldn't have any conflicts, but I believe it will still require the custom build.prop file which is found in the OP, or at a minimum the specific changes which allow this tweak to work.
Click to expand...
Click to collapse
Aslongasyoukeeptheradioandbuild.propchnges
Yikesmyspcebarisfiling and some"a's"
Enviado desde mi DROID3 usando Tapatalk

Will loading XT883 radio undo the wifi-hotspot hack?

[Q] xt862 can't use cdma 3G

My phone is Verizon Droid 3 XT862.
It can't use cdma 3g or 1x network.
SMS and voice is normal. WIFI is normal too.
If i use GSM card, same problem appears.
I flashed the rom , changed the file named 'ppp-rils.option'.
But nothing happened.
Please help me.
thanks.

powerword said:
My phone is Verizon Droid 3 XT862.
It can't use cdma 3g or 1x network.
SMS and voice is normal. WIFI is normal too.
If i use GSM card, same problem appears.
I flashed the rom , changed the file named 'ppp-rils.option'.
But nothing happened.
Please help me.
thanks.
Click to expand...
Click to collapse
Fully restore your phone using my Fast / Easy unbrick method, just search the general section. (All it does is restore your phone to complete stock.)
You can try other stuff, but this method seems to fix most issues that aren't "easy" to fix.

I will try this method.
But I want to know if there are something can be changed or flashed other than this rom.
I want to fix my phone's network.
It not work on cdma , gsm or wcdma.
I flash xt883 rom, but nothing happened.
Can i flash radio? Change hardware setting.
who can tell me.

powerword said:
I will try this method.
But I want to know if there are something can be changed or flashed other than this rom.
I want to fix my phone's network.
It not work on cdma , gsm or wcdma.
I flash xt883 rom, but nothing happened.
Can i flash radio? Change hardware setting.
who can tell me.
Click to expand...
Click to collapse
You don't need the xt883 ROM in order to use the phone on any foreign gsm. The phone must be unlocked by Verizon, then you need to flash the xt883 radio.img, then edit/replace the build.prop. I would flash back to stock first, since the xt883 is a weird ROM, but you probably don't have to. There are already plenty of threads where the explanations have been given, so look around: search Verizon D3 on T-Mobile, D3 on AT&T/T-Mobile, etc.
You will have to turn off 'automatically select operator' in settings and choose manually the one you're using. T-Mobile users will only get edge and below, while AT&T users will get 3g.
Droid 3 with stock xt862 ROM working on T-Mobile via xt883 radio.img & custom build.prop

BenSWoodruff said:
You don't need the xt883 ROM in order to use the phone on any foreign gsm. The phone must be unlocked by Verizon, then you need to flash the xt883 radio.img, then edit/replace the build.prop. I would flash back to stock first, since the xt883 is a weird ROM, but you probably don't have to. There are already plenty of threads where the explanations have been given, so look around: search Verizon D3 on T-Mobile, D3 on AT&T/T-Mobile, etc.
You will have to turn off 'automatically select operator' in settings and choose manually the one you're using. T-Mobile users will only get edge and below, while AT&T users will get 3g.
Droid 3 with stock xt862 ROM working on T-Mobile via xt883 radio.img & custom build.prop
Click to expand...
Click to collapse
I flashed xt862 rom .
Calls and text is OK whether GSM or cdma.
Network is wrong whether GSM or cdma.
I changed APN settings, nothing happened.
What can i do next.

powerword said:
I flashed xt862 rom .
Calls and text is OK whether GSM or cdma.
Network is wrong whether GSM or cdma.
I changed APN settings, nothing happened.
What can i do next.
Click to expand...
Click to collapse
I'm not sure what is wrong with your connection, but mine has problems sometimes where the phone will not recognize any available gsm networks. It's sometimes like this after I reboot my phone, but if changing my settings doesn't work, rebooting again will usually work.
Is your phone unlocked by Verizon? Did you flash the xt883 radio.img since changing your ROM? Did you replace your build.prop file with the tweaked one? I will try to find these resources for you if you still need them, but you should be able to find them by searching if you haven't already. After doing these things, you just have to reboot then go to your settings and tell it to prefer gsm. On T-Mobile, you wont get umts. On AT&T you will get gsm and umts.
In settings, you need to select wifi & network settings -> mobile networks -> network mode -> then choose gsm/umts, back to mobile networks -> under gsm/umts settings, click select network, then choose gsm only for T-Mobile or automatic for AT&T, then click operator select, select network and choose your operator. Select automatically will have a check box next to it and you should deselect it. I didn't have to put in my apn settings, because my sim card provides those automatically.
If these settings tweaks don't work for you then I really have no clue what will fix it because it is likely that something else is wrong. I can't be of much more help without seeing the device. I would suggest to keep playing around in settings and just use your head to see why it's not connecting. If you are getting voice and text service on your carrier, data shouldn't be a problem if your settings are done correctly.
Good luck!
Droid 3 with stock xt862 ROM working on T-Mobile via xt883 radio.img & custom build.prop

Danger radio damage possible!!!!!!

Hey guys ,
I installed the OTA ICS update.
I decided to try using some gsm sims i have stashed a away and i was screwing with the gsm band settings. I selected the automatic band selection. DO NOT DO THAT YOU WILL EFF UP THE RADIO!!!!!
Once i switched back to my verizon sim i could only connect to the LTE network. I was unable to connect to the cdma network and because of that i could not send or receive texts nor could i make or receive calls. Hard resets did not fix the issue. I had to switch to a 3g phone( samsung haven) white i waited for my replacement device to arrive :/
YOU HAVE BEEN WARNED

Have you tried reflashing the radio through fast boot? Or, maybe reflashing the entire thing?
Sent from my Galaxy Nexus using xda app-developers app

podspi said:
Have you tried reflashing the radio through fast boot? Or, maybe reflashing the entire thing?
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
Once i was able to download the ICS fastboot files (two nights ago) i tried flashing the system partition and the radio partition but no dice

ROMs for SPH-P100 without Data Plan

I haven't been able to find a definitive answer to this question yet: Does it make a difference which JB ROM I flash on a SPH-P100 on which I am only using wifi? I have been using CM10 Nightlies, which are fine, but they do incorrectly identify the phone as Verizon. Basically, I'm interested in trying out some of the other ROMs.
Thanks!

if you aren't using data it won't matter. you won't be able to use the data anyway if your esn isn't registered to their network.

Just to be absolutely sure, would it make a difference if it's a GSM ROM?

Mobile Data 3G Not Working CM10
derekwilkinson said:
if you aren't using data it won't matter. you won't be able to use the data anyway if your esn isn't registered to their network.
Click to expand...
Click to collapse
I have 2 SPH-P100 on VZW and I had them on ICS9 and after updating it to CM10 my Mobile Data Stopped working on both any Ideas????

Whizzpopper said:
Just to be absolutely sure, would it make a difference if it's a GSM ROM?
Click to expand...
Click to collapse
It will brick your CDMA device.
Sent from my GT-P1000 using xda app-developers app

Thanks
priyana said:
It will brick your CDMA device.
Sent from my GT-P1000 using xda app-developers app
Click to expand...
Click to collapse
Any ideas to revert or make it work? I was able to downgrade to cm and still wasn't working I'm gonna try CDMATool and try with different IMEI and MEID. Do you know what did exactly bricked?? Baseband, modem drivers, or is just a ROM malfunction? An Volunteers to help me figure it out, lol
Thanks for all your help.

andyxaspikes said:
Any ideas to revert or make it work? I was able to downgrade to cm and still wasn't working I'm gonna try CDMATool and try with different IMEI and MEID. Do you know what did exactly bricked?? Baseband, modem drivers, or is just a ROM malfunction? An Volunteers to help me figure it out, lol
Thanks for all your help.
Click to expand...
Click to collapse
I was replying to the person who want to flash the GSM ROM into his CDMA device.
I personally have never encountered anyone who has done that.
Are you saying you accidentally flashed a GSM rom into your CDMA?
As long as you can still go to download mode, you should try to flash a stock CDMA rom that has a pit file as well, using Odin repartition or use heimdall.

priyana said:
I was replying to the person who want to flash the GSM ROM into his CDMA device.
I personally have never encountered anyone who has done that.
Are you saying you accidentally flashed a GSM rom into your CDMA?
As long as you can still go to download mode, you should try to flash a stock CDMA rom that has a pit file as well, using Odin repartition or use heimdall.
Click to expand...
Click to collapse
Well I Flashed the p1c (CDMA) CM10 nightly. while I'm connecting to my WiFi it shows verizon wireless on the status bar. and if I go to the status it shows Network (Verizon Wireless) ,signal strenght (akward -4dBm), Mobile Network type (CDMA - EvDo rev. A:6, Service state (In Service), Mobile Network state (Disconnected) I turn off the WiFi and it stays in Connecting for 10-15 secs and goes back to Disconnected.
I tried heimdall and I was able to put the zimage and recovery. when I add the pit file it grays out, so I tried some of the One Click restock and it allowed me to go back to my NAND backups on CM9 but it just doesnt want to connect.
any other suggestions??
THANKS A LOT for all your help!!!!

I didnt I figured out they sold them to me with free data plan for 6months then thats when it stopped...

[Q] Verizon Droid 3 GSM Data

This may be an old question, but I've been unable to find an answer...
I have an off-contract verizon Droid 3. So I flashe the radio ROM with the Chinese 883 variant. I took it to the UK and put a "3" SIM into it. I got voice + txt, but I didn't get data.
(I didn't have a PC in the UK so I couldn't do more testing... had to wait until I got home)
OK, I come back to the US and I do some testing...
I rebuild from scratch with 5.7.906. I force the machine into GSM mode. Then I use "Network System Information" (NSI). I see my SIM card; my UK phone number, MMC, MNC. But, of course, it doesn't work in the US becuase the phone won't talk to US GSM networks with Verizon firmware.
I change the radio to the Chinese radio.img, as per http://forum.xda-developers.com/showthread.php?t=1406812 - I also replace build.prop, /system/lib/libmoto_ril.so and /system/etc/ppp/peers/pppd-ril.options
Now I reboot and I can see the GSM network (T-Mobile, in this case), but NSI doesn't get to see SIM contents; no phone number, no MNC, no MMC. And so I'm back to phone+txt but no data; the APN isn't picked up.
Do I need to do something else to get data working?
(Probably if I leave it with the Verizon radio ROM then next time I go to England I'll get data, but it means I don't get the SIM working while in the US).

sweh said:
This may be an old question, but I've been unable to find an answer...
I have an off-contract verizon Droid 3. So I flashe the radio ROM with the Chinese 883 variant. I took it to the UK and put a "3" SIM into it. I got voice + txt, but I didn't get data.
(I didn't have a PC in the UK so I couldn't do more testing... had to wait until I got home)
OK, I come back to the US and I do some testing...
I rebuild from scratch with 5.7.906. I force the machine into GSM mode. Then I use "Network System Information" (NSI). I see my SIM card; my UK phone number, MMC, MNC. But, of course, it doesn't work in the US becuase the phone won't talk to US GSM networks with Verizon firmware.
I change the radio to the Chinese radio.img, as per http://forum.xda-developers.com/showthread.php?t=1406812 - I also replace build.prop, /system/lib/libmoto_ril.so and /system/etc/ppp/peers/pppd-ril.options
Now I reboot and I can see the GSM network (T-Mobile, in this case), but NSI doesn't get to see SIM contents; no phone number, no MNC, no MMC. And so I'm back to phone+txt but no data; the APN isn't picked up.
Do I need to do something else to get data working?
(Probably if I leave it with the Verizon radio ROM then next time I go to England I'll get data, but it means I don't get the SIM working while in the US).
Click to expand...
Click to collapse
Grab a T-Mobile prepaid SIM so you can test further. You shouldn't have to replace any files except the radio and build.prop for the 883 Chinese radio from the Verizon XT862 radio/build.prop.

MrObvious said:
Grab a T-Mobile prepaid SIM so you can test further. You shouldn't have to replace any files except the radio and build.prop for the 883 Chinese radio from the Verizon XT862 radio/build.prop.
Click to expand...
Click to collapse
OK, I rebuilt back to Verizon factory just so I have a clean slate.
I don't have a T-Mobile SIM but I do have an (expired, deactived) UK Virgin Mobile SIM.
I put that in the phone with the Verizon Radio ROM and, as expected, it won't connect to AT&T. NSI will show me the MNC, MCC, phone number and othe SIM details.
I switch to Chinese ROM and build.prop... and I can still see the details! This is something new...
OK, with that level of success I switch back to the 3 SIM card. And... no data.
So:
Verizon Radio and build: 3 SIM visible in NSI but won't connect. Virgin SIM visible in NSI but won't connect
Chinese Radio and build: 3 SIM _not_ visible in NSI. Connects for voice+txt, no data. Virgin SIM visible but won't connect ('cos expired)
Hmm, looks like some interaction between the radio and the SIM. Odd!

Sorry I meant get a T-Mobile SIM so you can test the 883 radio.

What testing are you proposing? Other than "data works with a T-Mobile SIM" of course
Since the MNC and MMC aren't visible with the Chinese ROM and the 3 SIM, no APN is selected and so no data... with the Virgin SIM the MNC and MMC are visible and I can see APNs in the APN settings screen.

all i ever did was 1. get unlock code , 2.flash 883 radio , 3. change build,prop.
have to root first of course.
never ran into an issue except once when i accidentally erased some files in the system folder.

I have never understood why install xt883 radio when xt862 works great with gsm networks (all G/E/3G/H connection modes with data). Is there any reason for doing that?

trethon said:
I have never understood why install xt883 radio when xt862 works great with gsm networks (all G/E/3G/H connection modes with data). Is there any reason for doing that?
Click to expand...
Click to collapse
The xt862 radio is unlocked for gsm networks outside the US, but will not allow US GSM SIMs from T-Mobile and AT&T to work.

doogald said:
The xt862 radio is unlocked for gsm networks outside the US, but will not allow US GSM SIMs from T-Mobile and AT&T to work.
Click to expand...
Click to collapse
It's not the SIM, it's the network. A UK "3" SIM won't join T-Mobile or AT&T with the Verizon radio ROM, but it will with the alternate ROM.

SOLUTION
Hi and morning to you. I work for your carrier (TECH SUPPORT) so i think i know what the issue is. you can call them and verify this i'm sure they will agree but dont mention my name
3 sim card only works on 3g network and when you put the phone in a 2g phone it dosent. i know the droid 3 is 3g but like you there are 80 % d3 owners having same issue of no 3g data. when you root and install a rom the data capability goes away. try this .......
set up a new apn WITH ► NAME : 3, ► APN : THREE.CO.UK and go to last option ► apn type and type the word "default" then save and reboot. dont forget to activate mobile data. i think it will at least give you 2g kind of internet. i have droid 3 and i took it when i was in the u.s and now in india
lemme know it it works. forgot to mention....there is patch to get 3g data working (google) it.

Lycanist said:
lemme know it it works. forgot to mention....there is patch to get 3g data working (google) it.
Click to expand...
Click to collapse
No this doesn't work because the MNC and MCC aren't visible and so the phone won't select the APN.

Sad it dosent work. Why dont you upgrade phone to Droid 3 stock (download unbrick Droid .bat from Droid 3 developement unbrick/root 1st post and then start from scratch like rooting , safestrap stc ) in case if u flash n if there is no signal then activate roaming. I have done d same.
Sent from my XT860 using xda app-developers app
---------- Post added at 09:39 AM ---------- Previous post was at 09:28 AM ----------
Hi again, try this n lemme know if it worked
Go to d link n read apn modify via *#*#
http://forum.xda-developers.com/showthread.php?t=1633163
Sent from my XT860 using xda app-developers app

Lycanist said:
Sad it dosent work. Why dont you upgrade phone to Droid 3 stock (download unbrick Droid .bat from Droid 3 developement unbrick/root 1st post and then start from scratch like rooting , safestrap stc ) in case if u flash n if there is no signal then activate roaming. I have done d same.
Click to expand...
Click to collapse
That's exactly what I did; I reflashed to 5.7.906 using moto-fastboot. With the VZW radio ROM I can see the SIM MNC MCC but (of course) it won't talk GSM in the US. With the Chinese radio ROM it'll talk to the network but without data 'cos it doesn't see the MNC MCC.
The whole question is moot now 'cos I've now got an S4 and cut the SIM to size; that works just fine

sweh said:
That's exactly what I did; I reflashed to 5.7.906 using moto-fastboot. With the VZW radio ROM I can see the SIM MNC MCC but (of course) it won't talk GSM in the US. With the Chinese radio ROM it'll talk to the network but without data 'cos it doesn't see the MNC MCC.
The whole question is moot now 'cos I've now got an S4 and cut the SIM to size; that works just fine
Click to expand...
Click to collapse
I've ported xt861 (2.3.6) rom to xt862 (called it cROM) to use it in Europe/Poland, but have same problem with data transfer. The solution was:
1. download full apns-conf.xml file with most of world networks apns (about 160kb)
2. copy the file to /system/etc/apns-conf_0.xml
3. create two links
ln -s /system/etc/apns-conf_0.xml /system/etc/apns-conf_.xml
ln -s /system/etc/apns-conf_0.xml /system/etc/apns-conf.xml
4. reboot

Try this (from terminal):
su
rm -R /data/data/com.android.providers.telephony/databases
reboot