Technical FAQ What can I do if error occurs during requesting bootloader unlock key? 15-Nov-2016

Please visit Unlock Bootloader page for more information.

If you cannot get the answer, please email us at developer@lge.com with detailed information.

Technical FAQ How to download and install USB drivers for LG Android devices? 15-Nov-2016

With an Android-powered device, you can debug your Android applications just as you would on the emulator. 


Downloading USB Driver

If you don’t have USB driver for LG Android device, you can download it from the product support page of the LG Electronics site.


1. Visit LG Electronics site.
2. Select your region, country and language.




3. Select Support > Product Help > Software, Firmware & Drivers menu.
4. Select LG Mobile Drivers and click Windows or Mac button to download LG Universal Mobile Drivers.



Installing USB Driver

If your phone is connected to the USB Port of your PC, Disconnect it before running the installer you just downloaded.


1. Click the downloaded.exe file.


2. Select the language and click Next button to install LG Universal Mobile Driver.



3. When the driver is installed successfully, you can see the message as below.


4. Please connect your USB cable directly to the PC. Do not use a USB Hub.

Setting up a Device

Before you start debugging your Android application, you need to set up a device. Follow the steps below.
1. Connect your device to your development computer.
2. Turn on "USB Debugging" on your device.
On the device, go to Settings > Developer options and enable USB debugging in the device system settings, under Settings > Developer options


On Android 4.2 and newer, Developer options is hidden by default. To make it available, go to Settings > About phone and tap Build number seven times. Return to the previous screen to find Developer options


3. Test that the driver is correctly installed using adb.
You can verify that your device is connected by executing adb devices from your SDK platform-tools/ directory. If connected, you'll see the device name listed as a "device."



Technical FAQ How do I set up Android Development Environment? 15-Nov-2016

The following describes how to set up Android development environment.


Step 1: Install JDK

If you do not have Java Development Kit (JDK) installed on your computer, you need to install it. You can download it from Java SE Download.


Step 2: Download Android Studio

Go to Android Sudio  and click Download Android Studio. Unzip and install the Android Studio, the you can launch Android Studio.


Technical FAQ What is API Level? 15-Nov-2016

API Level is an integer value that uniquely identifies the framework API revision offered by a version of the Android platform.
The table below specifies the API Level supported by each version of the Android platform. 


Platform Version API Level VERSION_CODE
Android 7.0 24 N
Android 6.0 23 M
Android 5.1 22 LOLLIPOP_MR1
Android 5.0 21 LOLLIPOP
Android 4.4W 20 KITKAT_WATCH
Android 4.4 19 KITKAT
Android 4.3 18 JELLY_BEAN_MR2
Android 4.2, 4.2.2 17 JELLY_BEAN_MR1
Android 4.1, 4.1.1 16 JELLY_BEAN
Android 4.0.3, 4.0.4 15 ICE_CREAM_SANDWICH_MR1
Android 4.0, 4.0.1, 4.0.2 14 ICE_CREAM_SANDWICH
Android 3.2 13 HONEYCOMB_MR2
Android 3.1.x 12 HONEYCOMB_MR1
Android 3.0.x 11 HONEYCOMB
Android 2.3.4
Android 2.3.3
Android 2.3.2
Android 2.3.1
Android 2.3
Android 2.2.x 8 FROYO
Android 2.1.x 7 ECLAIR_MR1
Android 2.0.1 6 ECLAIR_0_1
Android 2.0 5 ECLAIR
Android 1.6 4 DONUT
Android 1.5 3 CUPCAKE
Android 1.1 2 BASE_1_1
Android 1.0 1 BASE
About Site [Forum] How can I monitor my forum and be notified when my question gets answered? 13-Nov-2016

Our community forums provide a monitoring (or watching if you prefer) feature so that you can be notified by mail when a new post or a reply to your question is posted.


Simply press the Monitor button at the bottom of your forum page, and proceed with the confirmation prompt.




Notification mail will be sent to the email address you have provided us for the site account.


If you want to stop monitoring your forum, simply press the Stop Monitoring button at the bottom of your forum page, and proceed with the confirmation prompt.




You can always start monitoring again by pressing the Monitor button.

About Site [Forum] Formatting sample code on forum 13-Nov-2016

You can format your code in your post for forum. We recommend you to use this feature, because some of the characters in code are recognized as real code of the webpage.


To format your code, start your code block with [code] and end it with [/code].


Dear LG,


This is the code I wrote. The cheatkey() is not called properly.

Can you tell me what I've done wrong?



function cheatkey() {
    console.log('show me the money');

<p class="content">Lemmings is the greatest PC game in the world.</p>




About Site How can I send an e-mail to the LG Mobile Developer Site? 13-Nov-2016

If you want to give us feedback about the materials on this website or need help with LG Mobile developer services, contact us directly by email at developer@lge.com. We will try to respond to your email as soon as possible.

About Site Chrome browser is recommended for this site 13-Nov-2016

Chrome browser is best recommended for this site. For IE, IE 11 or above is available.

About Site What is the LG Mobile Developer Site? 13-Nov-2016

LG Mobile Developer Site is open to all developers who want to create applications for LG mobile devices. This site provides plenty of technical resources, document, and sample codes for LG mobile development.
You can also use community forums to connect with LG technology experts and other developers to share resources, helpful tips, and get answers to questions.