Tips and tricks for solving problems at LG G4 or LG G4 DUAL (H815 / H815T / H815P / H811 / H818N). For several users, having dual simcard GSM smartphone is a must because we can subscribe with more then one operator at one smartphone, therefore we can choose LG G4 single simcard or LG G4 DUAL. Both type have similar specifications, like 5.5 inches LCD screen which have Gorilla Glass screen protector version 3. For better experience LG G4 / G4 DUAL already use Android Lollipop for factory default operating system.

 

What is Advantage of LG G4 / G4 DUAL (H815 / H815T / H815P / H811 / H818N) Specifications?

Network GSM 3G HSDPA + 4G LTE
LCD 5.5 inches
Gorilla Glass Screen Protector
Processor Octa core with Quad-core 1.44 GHz Cortex-A53 & dual-core 1.82 GHz Cortex-A57
NFC / Bluetooth / GPS / Wifi
Memory Internal 32 GB with 3 GB RAM
Main Camera 16 MP, 5312 x 2988 pixels, laser autofocus, optical image stabilization, LED flash
Front Camera 8 MP for Video Conference
Operating System Android, v5.1 (Lollipop)
Battery Li-Ion 3000 mAh

 

 

How to Fix or Problem Solving for Recovery LG G4 / G4 DUAL (H815 / H815T / H815P / H811 / H818N)  hang or not responding or malfunctions or stuck or freezing or bricked ?

We get LG Optimus UX 4.0 for default user interface, this phone also comes with several factory default applications. The internal memory capacity of LG G4 or LG G4 DUAL is 32 GB which also use for operating system and factory default applications, so we will not get fully 32 GB free capacity. However, if we need more storage for pictures or video, then we can add external memory slot using microSD up to 128 GB. There are several interesting free applications that we can install at LG G4 or LG G4 DUAL like Facebook, Instagram, Twitter, Whatsapp, WeChat, Line Messenger, Blackberry Messenger (BBM), Path, Pinterest, Viber, Skype and many more. But we have to read review carefully before download applications, because some apps from Google Play Store may contain viruses and malware, also some applications maybe not compatible with our LG G4 or LG G4 DUAL which can make hang or stuck or bricks or frozen or boot logo loop or LCD touch screen not responding. We need  to force soft reset or force shutdown or reboot our LG G4 or LG G4 DUAL to clean temporary files and caches. If this problems still happen, then we have to do hard reset using hardware button combination key. Please note, doing hard reset will remove any important data and photo and video, therefore we have to backup all important data at LG G4 or LG G4 DUAL to external memory before hard reset.

 

How to Force Shutdown or Force Soft Reset or Force Reboot or Force Restart LG G4 / G4 DUAL (H815 / H815T / H815P / H811 / H818N)  ?

We have to know that because the ability to install many applications from Google Play Store or offline APK files, then that applications can make our phone become crash and hang or stuck or LCD touch screen not responsive with our finger touch in the middle of running applications. If we get this situation, then we have to force soft reset or force shutdown to restart all running apps and delete temporary files and caches. We are happen to know that LG G4 or LG G4 DUAL battery is removable, therefore we can remove back cover and unplug or release the battery to force shutdown, wait about 5 seconds and put again that battery at right positions, then press POWER button to turn on LG G4 or LG G4 DUAL. If we want to restart and delete caches when our phone still work normally then we can press and hold POWER button until pop-up menu appear, then choose Power off / Shutdown / Reboot menu. The soft reset or reboot process will not remove any important data, so we can do this process anytime we want.

 

#Option 1, Hard Reset LG G4 / LG G4 DUAL (H815 / H815T / H815P / H811 / H818N) with software menu

  1. Turn on the LG G4 / G4 DUAL (H815 / H815T / H815P / H811 / H818N)
  2. Make sure the battery is not empty
  3. Backup important data at LG G4 / G4 DUAL (H815 / H815T / H815P / H811 / H818N) because all data and applications will be erase or delete
  4. Go to Menu :  Setting > Backup and Reset > Factory Data Reset
  5. Choose : Reset Device > Delete all
  6. The LG G4 / G4 DUAL (H815 / H815T / H815P / H811 / H818N) will do the master reset process.

 

hard reset lg g4 dual to factory default

 

#Option 2, Hard Reset LG G4 / LG G4 DUAL (H815 / H815T / H815P / H811 / H818N) Factory Default using Hardware Secret Button Key

In some conditions, we can not do anything at LG G4 / G4 DUAL (H815 / H815T / H815P / H811 / H818N) touch screen or frozen in some state. So we can not access reset menu like Option #1, do not worry, because we can do hard reset LG G4 / G4 DUAL (H815 / H815T / H815P / H811 / H818N) with hardware key button :

  1. Turn off the LG G4 / G4 DUAL (H815 / H815T / H815P / H811 / H818N)
  2. Make sure the battery LG G4 / G4 DUAL (H815 / H815T / H815P / H811 / H818N) already full or more than 50%
  3. Press together and hold the Power Button + Volume Down Button
  4. If the Logo appear, then release the Power Button (do not release the Volume Down Button), then continue to press again the Power Button until Recovery mode / Factory reset menu appear, then we can release all button now.
  5. Choose wipe data/factory reset using Volume Button, and press Power Button to Enter or OK
  6. The LG G4 / G4 DUAL (H815 / H815T / H815P / H811 / H818N) will continue master reset, wait for several minutes until the the phone start like new again.

 

How to Restore and Reinstall Clean Android Operating system / firmware at LG G4 / G4 DUAL (H815 / H815T / H815P / H811 / H818N) (Reformat)?

Should I need to reformat LG G4 or LG G4 DUAL ? It is depend on situations, when we install too many applications, sometime this phone can get trouble and make the operating system damaged or corrupted. If we get this trouble, then our LG G4 or LG G4 DUAL will become hang or can not work properly. We need to reformat or reinstall or restore with factory default Android operating system. First of all, we need to know that clean factory default Android operating system file source already saved safely inside LG G4 or LG G4 DUAL ROM or internal memory, therefore we do not need to copy or connect from other devices. Just follow simple steps to do hard reset above, then clean factory default Android operating system will reinstall automatically.

 

How to Unlock or Fix or Bypass or Solutions for LG G4 / G4 DUAL (H815 / H815T / H815P / H811 / H818N) forgot password code or security lock screen pattern or pin (lost password)?

Good functions from LG G4 or LG G4 DUAL is about the 16 megapixel camera, because this camera use OIS enhanced camera with optical image stabilization at back side and 8 megapixel selfie camera at front body. Of course we will have many important personal photos or confidential pictures. We have to keep secure our phone to protect all data from unauthorized people while our LG G4 or LG G4 DUAL away from us or stolen or lost. There are several factory default security protections which already include at LG G4 or LG G4 DUAL, we usually use screen lock pattern because this is more easy and faster to open, but some users like to use password pin protections, all type of security protections are good. But the problems happen when we forgot security screen lock pattern or password pin protections, how to fix this problems? Do not worry, because we can unlock or bypass forgot security protection using Google account. Please turn on our LG G4 or LG G4 DUAL, when screen locked, try to give several time wrong answer continuously until LG G4 or LG G4 DUAL screen locked and freeze 30 seconds. At this moment, we can find Forgot Password / Pattern button, press this button then we can give our Gmail username and password. If we can not access our Gmail account, then we have to do hard reset using hardware button combination key.

 

How to Improve Performance LG G4 / G4 DUAL (H815 / H815T / H815P / H811 / H818N) to make run more faster?

This phone use double dual core processor or octa core from Qualcoom, that is why we can get wonderful performance to run all applications and games. But some users maybe get trouble with slowly LG G4 or LG G4 DUAL. Mostly this problems happen because there are too many applications run in the background or foreground. All applications will consume RAM and processor resources. Some applications from Google Play Store will keep run in the background to wait data update and wait some command to process like social media or chatting or games. If many apps like this running together, then 3 GB RAM will insufficient and LG G4 or LG G4 DUAL will try to release some RAM from other old not use applications in the background, this process will make this phone become slowly. Therefore we need to uninstall some not use applications. If we want to make our LG G4 or LG G4 DUAL performance run faster again like new, then we have to consider do hard reset or master format.

 

Is That Any Secret Code for Doing Format LG G4 / LG G4 DUAL (H815 / H815T / H815P / H811 / H818N) ?

There is no secret hidden code for LG G4 / LG G4 DUAL (H815 / H815T / H815P / H811 / H818N) to make it back to factory default. Do the options above to hard reset it.

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