LG G4 Quick Start Manual

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Unlocking the Bootloader LG G4
We value your opinion. We have heard your opinions from the open developer community. Starting in 2015, LG
will allow customers to unlock the bootloader for certain releases of LG smartphones. This will allow you to
participate in Android development using LG hardware. Please be advised that this feature is intended for
developers only. Therefore, we strongly recommend not to unlock the bootloader unless you fully
understand what you are doing.
For normal operation of the device it is NOT necessary to unlock the bootloader!
LG devices have a fully optimized, certified and tested version of Android, and unlocking the bootloader will
change the software. Therefore, it is important that you take time to read and that you keep the following in
mind before unlocking the bootloader to customize your device.
1. Once your phone is unlocked, it will no longer be covered by LG warranty.
As we cannot guarantee the proper operation of our hardware with custom software, we are not able to maintain
the full scope of warranty for your device after you have unlocked the bootloader.
Because of that we have a responsibility to let you know that defects which may result from, or were caused by
custom device-software may not be covered by LG warranty.
LG can no longer guarantee the full functionality of your device after you unlock the bootloader. Unlocking your
device may cause unexpected side effects that may include but are not limited to the following:
- Your device may stop working.
- Certain features and functionalities may be disabled.
- Your device may become unsafe to the point of causing you harm.
- Your device becomes physically damaged due to overheating.
- The behavior of your device may be altered.
- Some content on your device may no longer be accessible or playable due to invalid DRM keys.
- All your user data, settings, and accounts may disappear. (Therefore, we recommend that you backup all
your data).
- Software updates delivered via LG FOTA (Firmware Over the Air) or Web Download services may not work on
your device anymore.
LG will not be responsible for the damages caused by any custom software being flashed to your
phone.
2. Unlocking the phone will disable certain functions of your phone.
When unlocking the bootloader, the DRM protection of your phone will become untrusted.
Some applications which require DRM protection may not work anymore or block certain functions due to this
untrusted DRM.
Common examples are applications which offer download/streaming of paid multimedia content like music and
movies.
3. Unlocking the bootloader may make your device become vulnerable.
Using custom ROM may lead to monetary damages due to viruses, malwares, and leakage of personal
information from hacking. You will be responsible for all such damages that occur after unlocking the bootloader.
4. Once unlocked, it cannot be undone.