SIM Unlock LG G Pad 8.3 VK810 Verizon to AT&T

Sim unlock LG G Pad 8.3 Vk810 no service for tmobile?

uprightbass360 said:

As it seems you are comfortable messing with your APN settings that should be all you will need to do. The device is locked to specific wireless frequencies but luckily for you at &t uses the same LTE frequencies. You will need to have root access in order to write your APN settings though, check the forums for information on that. Finally make sure that the sim you have is compatible with your tablet data plan, and your APN settings should be as follows for mobile data only.

APN: BROADBAND
MCC: 310
MNC: 410

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Help please !!! some how I insert my t-mobile sim in....the G Pad said... "Activation incomplete" ... I already set APNs for Tmobile already...... look like i have no service.. is it because my sim card is for phone but not tablet...? is the LG G Pad vk810 is unlock sim for any carriers?

Prepaid T-Mo Sim + LG G Pad 8.3 LTE

This could be the most fustrating device...at least for me.
I have a rooted G Pad I bought on Craiglist for 150. Works great. I got a TMo sim, applied the APN settings...NOTHING.

I have tried this on 4.2.2 & 4.4.2
I installed the radio switcher app, it says its not compatible with my device.

Is it because I'm rooted? I dunno where else to go, it will not pick up the network. I have tried 3 SIM cards (2 post pay & 1 pre pay)

Images

https://copy.com/0kMSQST3KcnL7yKX

MetalMilizia said:

This could be the most fustrating device...at least for me.
I have a rooted G Pad I bought on Craiglist for 150. Works great. I got a TMo sim, applied the APN settings...NOTHING.

I have tried this on 4.2.2 & 4.4.2
I installed the radio switcher app, it says its not compatible with my device.

Is it because I'm rooted? I dunno where else to go, it will not pick up the network. I have tried 3 SIM cards (2 post pay & 1 pre pay)

Images

https://copy.com/0kMSQST3KcnL7yKX

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Are the T-Mobile sim cards provisioned as tablet lines?

It gave me an option to activate as a tablet or as a phone when setting up the pre pay

MetalMilizia said:

This could be the most fustrating device...at least for me.
I have a rooted G Pad I bought on Craiglist for 150. Works great. I got a TMo sim, applied the APN settings...NOTHING.

I have tried this on 4.2.2 & 4.4.2
I installed the radio switcher app, it says its not compatible with my device.

Is it because I'm rooted? I dunno where else to go, it will not pick up the network. I have tried 3 SIM cards (2 post pay & 1 pre pay)

Images

https://copy.com/0kMSQST3KcnL7yKX

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While I knew the tablet did not support 3G, I didn't realize it didn't support 4G (HSPA+) either. Once I entered LTE coverage, it worked great.

MetalMilizia said:

While I knew the tablet did not support 3G, I didn't realize it didn't support 4G (HSPA+) either. Once I entered LTE coverage, it worked great.

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I found the same... works fine when there is T-Mobile LTE coverage, but T-Mobile coverage in New Hampshire is quite bad and LTE is even worse. But since I am using the free 200mb plan and it works in my town, I can't complain too much

Hi, so I have the same VK810 tablet...before updating to 4.4.2 the tablet was working great on t-mobile LTE however once I updated at first I didn't get any signal but once I inserted a verizon SIM into the machine and applied a few more updates that just released (i think) it then recognized my t-mobile SIM and showed me bars of service.

However even after updating the APN, I still get the activation incomplete message and when I turn wifi off, I get no service so I am stumped as well. I am considering swapping in a new SIM as maybe my SIM is too old or something

I am going to try the service menu item and re-check the APN settings. I even made sure to enable the roaming feature as the request of T-mobile tech support

Having some issues under Lollipop 5.0.2...putting in active VZW SIM then Tmo SIM makes it work. But then later it loses signal til you put the VZW SIM back in and swap again.

Trying some new APN settings (which should make no difference) but appear to be working better. Held signal for about an hour, then I put it in airplane mode and then back out and LTE came back. I deleted the old APN and made a new one. I also chose roaming on for data and automatic network selection.

5.0.2 isn't fully backed as it will give you a menu for WCDMA, GSM etc but all the options are greyed so it's really pointless.

Will report back if APN consistently works.

For me , I used a friend Verizon Sim card and then swapped it out with my T-mobile SIM card and not it is working with my T-mobile SIM.

I am on 4.4.2 on the 24A firmwire.

When I bought the tab from someone on CL 2 months back I never had to use a Verizon SIM but there was a 30 mb update and since then it seems like Verizon did something to block out other SIM Cards.

Also noticed when you cant get a network with a non Verizon Sim card Network Settings was crashing all the the time saying android.network.com or something like that has stopped working.

I am not seeing the lollipop update for the vk810...is it blocked if you don't have the verizon sim?

aviseqdas said:

For me , I used a friend Verizon Sim card and then swapped it out with my T-mobile SIM card and not it is working with my T-mobile SIM.

I am on 4.4.2 on the 24A firmwire.

When I bought the tab from someone on CL 2 months back I never had to use a Verizon SIM but there was a 30 mb update and since then it seems like Verizon did something to block out other SIM Cards.

Also noticed when you cant get a network with a non Verizon Sim card Network Settings was crashing all the the time saying android.network.com or something like that has stopped working.

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So yeah...yesterday I went and deleted the APN. I selected the reset to factory default option in the APN menu. I restarted and then added the APN and only input the name, apn and mmsc fields, hit save and instantly it worked in the wifi off mode.

Must have been a corrupt APN following my last update. Now on to updating to lollipop

Having trouble using my T-Mobile Tablet Data SIM (1GB) on a recently purchased VK810.

I went through the process of using the LG Flash Tool to update from 23A to 24A (no probs), used Stump Root to root (no probs), installed TWRP 2.7.0.1 and flashed the 2.7.0.2 update (no probs), and installed CleanRom 1.0 (wanted KK + heavy debloat).
I'm able to connect to Wifi fine, and the first time I inserted my TMO SIM it detected that it was a TMO connection. After setting up my APN, I was able to browse the Play store and verified I was going through my LTE connection by going to ipchicken.com, which displayed a TMO IP and hostname. However, after rebooting the tablet, it can no longer connect to LTE. LTE Discovery detects the Band 4 connection, but it's reporting the carrier as "unknown", but oddly the MCC/MNC is still being reported as 310-260.
Another reboot didn't fix it. Factory reset via TWRP didn't fix it. A format and reinstall of CleanRom via TWRP didn't fix it. Stuck the SIM in another device and it's able to connect fine, so it doesn't seem to be a SIM issue.

Anyone have any ideas?

EDIT: Decided to re-flash the 24A kdz (starting from scratch). After installing it I skipped through the setup, turned the tablet off, insert my TMO SIM, turned it back on, and it connected! Set up the APN and was able to browse the internet again.
Rebooted the tablet just to make sure it would work after reboots... and it didn't. :/ When I try to look at the network or hardware info in the About Tablet menu, com.android.phone crashes.

Odd that it connects the first time, but can't connect after reboots until re-flashed is very odd...

EDIT2: Flashed 35A just to see how LP would fare. Same exact thing happened. About Tablet -> Network/Hardware Info isn't crashing though, and Status is displaying my SIM's phone number, but everything is still coming back No Service.

EDIT3: Reflashed 24A, same deal. I tried adding, deleting, re-adding, resetting APNs to factory default, etc. and none of that solved the problem after the reboot.

Guess I received a faulty tablet :/

roirraW "edor" ehT said:

I don't have any suggestions, just wanted to say sorry to hear about all the trouble and thanks for posting your experiences.

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Thanks for the support. Turns out that I should have done a bit more searching, as this might have already been addressed: http://xdaforums.com/lg-g-pad-83/help/gpad-8-3-update-to-4-4-2-longer-able-to-t2836423

I'll give it a try after work.

Success! Flashing the 4.2.2 modem seems to have done the trick. Wish I knew about this the first time, would have saved me an entire day of messing around with flashing lol!

Basically what I did:
0. Did not insert SIM card yet. On microSD card: aboot.img (aboot4.2.2), modem.img (modem4.2.2), CleanRom's ZIP, Stumproot.apk
1. Flash the 24A kdz with LG Flash Tool 2014
2. Boot device, use File Manager to install Stump Root.
3. Root Stump Root, brute force mode, reboot when done.
(3.5. I connected to wifi and installed SuperSU from the market, but I don't think it was necessary)
4. Enabled USB debugging, copied aboot.img to /sdcard/, followed TWRP install instructions.
5. Boot into recovery, flash v2.7.0.2 TWRP update, reboot into recovery.
(5.5. Again, not sure if it was required, but I wanted to get rid of any dead files from the stock install, so I used TWRP to format the device, then rebooted back into recovery.)
6. Installed CleanRom and copied modem.img to /sdcard/ via TWRP.
7. Booted into CleanRom, enabled USB debugging, flashed modem.img via these instructions: http://xdaforums.com/showpost.php?p=54584896&postcount=5
8. Power off, stuck in SIM card, powered on.
9. Set up TMO APN, connected fine, visiting ipchicken.com showed a TMO IP/hostname.
10. Powered off, waited 10 minutes, powered on again, still connecting!

Hopefully this'll be the end of my troubles with this tablet. I'll update this post if something goes wrong in the next few days.

roirraW "edor" ehT said:

I don't have any suggestions, just wanted to say sorry to hear about all the trouble and thanks for posting your experiences.

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Hey all,
I recently updated my gpad to lollipop and now I have some issues with the LTE. Before the update (the tablet was on 4.4.2), I could use my t-mobile sim card and at&t sim card and the tablet will say 4G LTE. After the update, the tablet wont read any sim ?!... i tried to mannually input the APN of both AT&T and T-mobile, but it wont read no matter what. All i see was a white simcard symbol with a question mark and: "This is not a verizon sim card." IS there something wrong with the software or how can I manage to get it to work with my At&t lte again.

Please help me.

blackbean92 said:

Hey all,
I recently updated my gpad to lollipop and now I have some issues with the LTE. Before the update (the tablet was on 4.4.2), I could use my t-mobile sim card and at&t sim card and the tablet will say 4G LTE. After the update, the tablet wont read any sim ?!... i tried to mannually input the APN of both AT&T and T-mobile, but it wont read no matter what. All i see was a white simcard symbol with a question mark and: "This is not a verizon sim card." IS there something wrong with the software or how can I manage to get it to work with my At&t lte again.

Please help me.

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Read my above post. You need to root, install a custom recovery, and flash the 4.2.2 modems. (The root+recovery process is a bit different for lollipop, check related topics in this forum)

xtermmin said:

Read my above post. You need to root, install a custom recovery, and flash the 4.2.2 modems. (The root+recovery process is a bit different for lollipop, check related topics in this forum)

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Hey, where can I download the modems?

chrisc9000 said:

Hey, where can I download the modems?

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Read my above post. I posted a link to the modems.