How to Enable Hidden HSDPA and LTE Bands on LG G4

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lg-g4-unlock-lte-bands

If you’re a travel buff who love to travel around the globe, then LG G4 would not be a good companion for you as it supports lesser number of Internet bands than other flagships. However, LG G4 is one hell of smartphone and it’s hard to resist if you’re looking for a comfortable and ergonomic design along with a spectacular camera on a smartphone.

In case if you don’t know, the camera on LG G4 is arguably the best of all the smartphones and most importantly the leather back will give a comfortable grip. So, if you’re worried about lesser LTE bands on LG G4, there’s some good news for you. XDA member duraaraa has shared a useful tutorial through which you can enable the hidden HSDPA and LTE bands on your LG G4.

Yes, you heard it right. LG has disabled some of the HSDPA and LTE bands on G4 for unknown reasons but can be activated if you have root access. If you’re unaware of the supported bands on your LG G4, type 277634#*# in the dialer and then hitting Filed Text, Modem Settings and Network Mode. The International European LG G4 supports the following bands by default:

  • 2G bands: GSM 850 / 900 / 1800 / 1900
  • 3G bands: HSDPA 850 / 900 / 1900 / 2100
  • 4G bands: LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 17(700), 20(800), 28(700)

This guide was only tested on the International LG G4 H815, so don’t try it on any other variants as you’re up some bumpy ride along the way. If you’ve rooted your device, the rest all is done using the DFS software from cdmatool. If you haven’t yet rooted your device, click on the below link for our exclusive LG G4 rooting guide:

Warning!

Warranty may be void for your device if you follow the procedure in this guide as it involves software tampering. Proceed with caution and follow the procedure carefully. We shall not be liable for any damage that occurs to your device in case of any misfortune.

Prerequisites

  • Make sure to charge your device to at least 60% to avoid any unexpected shutdowns during the process.
  • Install proper drivers on your PC, if you haven’t installed already follow our guideInstall LG drivers
  • Enable USB Debugging on your device to use ADB commands while you’re connected to PC.
  • Download and extract the minimal ADB and Fastboot tool on your PC: mfastboot-v2.zip | Mirror
  • Make a backup of the Internal storage, contacts, media etc., just to make sure you’re on safe side in case of some mishap.

How to Enable Hidden HSDPA and LTE Bands on LG G4

  1. Unlock the bootloader on your device and root it using the aforementioned link.
  2. Download and install the CDMA tool on your PC. A free trail is sufficient for this guide.
  3. Navigate to the folder where you’ve extracted the ADB & Fastboot files and open a command prompt by pressing Shift + Right click on any empty space inside the folder, and select Open command window here from the context menu.
  4. Connect your LG G4 using a USB cable and execute the below commands to enter ADB shell and obtaining SuperSU permissions:
    adb shell
    su
  5. You should now enter the ADB shell with root permissions, execute the below command:
    echo 1 > /sys/devices/platform/lg_diag_cmd/diag_enable
  6. Unplug and re-plug the USB cable. Your phone will be in diag mode.
  7. Open DFS software, which you have downloaded from CDMA tool website. If it asks, create an account and other routines. Finally, close the account window and the software will launch.
  8. In DFS, double-click on your device to select it for action.
  9. Click on the Band tab and choose RF BC Config at the bottom. Then, choose Read.
  10. Make sure your bands are displayed. Now, select the extra bands you want to add.
  11. Click Write to push the config on to your device.
  12. Click on the LTE tab and click on Read. Check the bands you want to add and then click Write.
  13. Now, choose the LTE BC Config DIV LTE #6829 at the bottom and repeat the above process again.
    └ Note: Even though you don’t change bands, it is recommended to flash HSDPA and LTE both together before restarting the phone, as you might get errors such as losing bands.
  14. Reboot your LG G4 now.

Finally, go into the hidden menu and test the new bands. If they work, you will see SUCCESS when you press them in the test menu. (277634#*#, Field Test, Modem Settings, Network Mode/LTE Band Selection)

That’s it. It’s a bit tedious guide right? Let us know if you’ve any success enabling the disabled bands.