Lg power button on back

Lg power button on back DEFAULT

Hard Reset (Factory Reset)

If you forget your lock sequence and backup PIN, you will have to perform a hard reset to gain access to your phone.


Performing a hard reset deletes all of your user data, which includes pictures, videos, and music saved to your internal memory. Please make sure to back up your information prior to performing a hard reset.

  1. Turn the phone off.

  2. Press and hold the following keys at the same time: Volume Down Key + Power/Lock Key on the back of the phone.

  3. Release the Power/Lock Key only when the LG logo is displayed, then immediately press and hold the Power/Lock Key again.

  4. Release all keys when the Factory hard reset screen is displayed.

  5. Press the Power/Lock Key to continue or either of the Volume Keys to cancel.

  6. Press the Power/Lock Key once more to confirm or either of the Volume Keys to cancel.

Sours: https://www.lg.com/us/mobile-phones/VS980/Userguide/075.html

All the recent LG Smartphones have got an additional Google Assistant key. LG K40 was the first model to get this extra key. This way you can do any task with a voice command. We can also disable this Google Assistant Button if not in use.

In this post, we are going to check all the hardware and software buttons present on LG K40.

Let’s check out the K40 button layout with the help of the below video and screenshots –

LG K40 Buttons

1. LG K40 Button Layout

Where is the Power Button on LG K40?

lg k40 button layout

Since long back LG is offering smartphones with the power button on the back. LG K30 also had it on the back. The power button on the LG K30 doubled as a Fingerprint Sensor.

On K40 we have the Power button on the right. This is a welcome change. The power key on the back gets sticky over time. On my Aristo 2, a power button click is registered in multiple tries. It gets quite frustrating.

The volume rocker is on the left. Below the volume rocker, an extra button is added to K40. It’s a dedicated Google Assistant key.

2. LG K40 Power Button

The Power Button on LG K40 is useful in more ways than one. We can do a multitude of things using the power key. Let’s check out our options –

a. Power on/off, Restart, Sleep, Airplane Mode

lg k40 power button location

The basic function of the K40 power button is to switch the phone on and off.

Long-Press the power button, located on the right to switch on your K40.

While the phone is on, a single press on the power button puts the phone to sleep and vice versa.

A long-press would bring multiple options such as Power off, Power off and restart, Turn on/off Airplane mode.

b. Factory Reset Buttons / Recovery Mode (Volume Down + Power Button)

lg k40 factory reset buttons

With K40 in the off position, a combination of the Volume Down & Power button brings us to the recovery mode. The recovery mode is used to Hard Reset the phone.

Learn how to Hard reset your K40 via the Recovery Mode –

LG K40 Hard Factory Reset

c. Launch Camera with the Power Button

lg k40 shortcuts

We can set the power button as a shortcut key to launch the camera with a double-click.

Open “Settings” and choose the “General” tab. Now scroll down and tap the “Shortcuts” option.

lg k40 open camera with power button

We are now on the “Shortcuts” page.

Turn on the option “Open Camera” located under “Power”.

Now hit the power key twice to launch the camera.

d. End call with the Power Key

end call with power key k40

The power button can also be used to end a call.

To enable this feature, go to Settings > General > Accessibility

lg k40 end call with power key

Select the first option on the Accessibility page i.e. ” Vision”.

Now scroll down to the bottom of this page and turn on “End call with the Power key”.

e. Safe Mode

lg k40 safe mode

The power button also aids in turning on the safe mode.

When your K40 is on, long-press the power key.

Now, long-press the first option i.e. Power off.

This brings up the Safe mode window. Tap TURN ON to boot into safe mode.

To learn how to use and turn off safe mode, head over to the below post

LG K40 Safe Mode – How to use

f. Force Restart (Volume Down + Power)

lg k40 force restart

When frozen, you can bring back your K40 to life with a force restart.

Keep holding the power key and volume down key for 10 seconds or until the phone reboots.

Please refer to the above screenshot.


3. LG K40 Volume Button / Volume Control

a. Volume Control

lg k40 volume control

Like the Power Button, volume keys on K40 can do much more than controlling the phone volume.

Let’s see what more we can do with the volume keys –

b. Download Mode (Volume Down)

lg k40 download mode

Using the volume up button we can boot our k40 into the download mode.

The download mode is to flash a stock firmware via the LGUP flash tool.

Using the Download Mode you can upgrade, downgrade your android firmware. It can also be used to unbrick your dead phone –

LG K40 Firmware Download & Update

c. Firmware Update Stuck

Is your K40 stuck on the firmware update screen?

The volume down key can get your phone out of this mode –

Learn how to do that using the below post –

LG K40 Firmware Update Stuck 

d. Launch Camera (Volume Down)

lg k40 shortcuts

Is your K40 screen locked and you need the camera right away?

You can do so using the volume down button.

To enable this setting, please go to

Settings > General > Shortcuts

Open camera with volume down key

Enable the “Open Camera” option under “VOLUME”.

Now with the screen locked or off, double-click the volume down key.

This action would launch the camera. Click the volume down button one more time to capture a photo.

e. Launch Capture+ (Volume Up)

lg k40 open capture+ with volume up key

Like Camera, we can launch Capture+ with a double-tap on the Volume Up button.

This would work when the screen is off or locked.

Refer to the above screenshot to enable “Open Capture+”.

f. Silence / Answer an incoming call (Volume Up)

lg k40 call settings

We can answer or silence and incoming call using the volume up button on K40.

To turn on this setting. Go to Settings > General > Call.

lg k40 answer call with volume up button

Now tap, “Answer and end calls”.

Select the first option ” Press the volume up key to”.

lg k40 silence call with volume up key

Choose whether you wish to Answer or Silence a call using the volume up button.

g. Talkback Shortcut (Volume Up + Volume Down)

LG K40 Talkback

If you’ve accidentally turned on talkback on your K40, you can turn it off using the volume keys.

Open Settings > General > Accessibility

LG K40 Talkback off

Now go to Vision < Talkback and tap it for more settings.

LG K40 turn off talkback

By default, the “Talkback shortcut” option is enabled.

You turn on/off talkback by holding both the volume keys for 3 seconds.

lg k40 extra button

There is an additional extra button on the LG K40 below the volume rocker.

This is the dedicated Google Assistant key.

Long-press on the home button also brings the Google assistant app. The older method also works. Long-press the home button to launch Google Assistant.

lg k40 gogole assistant button

As the name suggests, it assists you in doing tasks using voice commands.

Turn off Google Assistant on LG K40

If you are accidentally pressing the Google assistant button, & it’s not of much use, you can disable it.


Open the settings app and go to General > Shortcuts.

turn off google assistant lg k40

Now turn off the last 3 options on this shortcuts page as shown above. This disables the Google Assistant Button.

Check out the below video to learn how to use and customize the home touch buttons on LG K40

The home touch buttons can also be used to launch a mini-view for one-handed operation. The below video shows how to turn on and use mini-view on K40 –


5. LG K40 WPS Button

LG K40 WPS Button

Look at the above screenshots.

The left one belongs to my LG Stylo 3 Plus running on Android Nougat 7.0

Stylo 3 Plus has the “Connect by WPS button” option on the Advanced Wifi page.

Since Android Oreo, this WPS button option is removed from the Advanced Wifi page.

The screenshot on the right belongs to LG K40. I’m on the advanced Wifi page and there is no option related to WPS. I couldn’t find the WPS button anywhere on the phone.


Was this post useful for you? Please share your views using the comment section below.


Categories LG K30 LM-X410, LG K40 LM-X420, Tips & Tricks - lmx410, Tips & Tricks - lmx420Sours: https://lgk20.com/lg-k40-buttons-power-wps-extra-side-button/
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This process will erase all personal data from your phones internal storage and restore your device to factory settings. Please remember to back up any important data before performing a factory reset.

Note: Please note that if a Gmail account has been set up on the device, after doing a factory reset, the device will ask for the password to the Gmail account.

  • Power

    Turn off your device (you may need to remove, then reinsert the battery).

  • Buttons

    Press and hold Volume Up (depending on your software, it may be Volume Down) and Power buttons on the back of the phone at the same time. When the LG logo is displayed, release then immediately press and hold the Power button while continuing to hold the Volume Up (depending on your software, it may be Volume Down) until the Factory data reset screen is displayed.

    Device Reset Example 1

  • Release

    Release all buttons when the Factory data reset screen is displayed.

  • Reset

    Press the Volume Down button to highlight Yes, then press the Power button to confirm.

    Device Reset Example 1

    Note: To cancel, select No (Exit) and press Power button. Your device will restart without performing a factory reset.

  • Confirm

    Press the Volume Down button to highlight Yes, then press the Power button once more to confirm.

  • Reset

    Your device will restart to perform the factory reset. Please do not remove the battery or attempt to power down during the factory reset process.

  • Sours: https://www.lg.com/us/support/help-library/lg-android-device-reset-CT10000025-20150103625691
    LG X POWER2 X Power 2, M320N, M320F Disassembly/replace display module

    The rear-facing buttons are the worst part of the LG G3

    Back when I owned my very first smartphone, I never paid any attention to the placement of any of the buttons or ports. But that quickly changed as the smartphone itself evolved and as I noticed how different button and port configurations affected how I used each device.

    On the Moto Q, the call and end buttons were exactly where you would expect them to be – on the face of the device, flanking a d-pad in the center. The end key doubled as the power key. There was no manual standby function we now associate with the power key.

    The Curve 8330 I later owned, however, did have this function. Along the top edge, it had mute button that doubled as a standby key. It was small enough to palm quite easily and the standby key was seemingly perfectly placed for either my right index finger or thumb to bump it before I dropped it in my pocket.

    desire-610-review-15For whatever reason, though, the top edge became a very popular location for the standby button across all types of mobile hardware. Even today, you can find smartphones and tablets with standby/power buttons located on the top edge of the device.

    At first, this wasn’t much of an issue for me. It still isn’t for most. But as the primary purpose of a smartphone began to evolve – from a mobile communicator to a mobile means of high-quality multimedia consumption – so did the basic size and shape of the smartphone. As I noted in The evolution of the smartphone earlier this week, the average size of the modern smartphone display grew from roughly 3.5-inches to somewhere between 4.7- and 5.5-inches. Obviously, the physical footprint of smartphones also drastically changed.

    Ever since, I’ve been paying close attention to the placement of buttons and the associated ergonomics of various handhelds. It doesn’t take an expert in ergonomics to understand that most phones nowadays are roughly the size of the average human hand, meaning to reach the far corners or poorly placed buttons requires a grip adjustment. This has led several manufacturers bring the power/standby key down from the top edge to the side of the phone. Practically all Samsung smartphones feature the power button approximately where the right thumb should fall along the right edge of the phone while the volume rocker should fall right beneath the index and middle fingers on the left edge.

    If we’re to believe leaks, even Apple, who has remained persistent in its top edge power button, will soon bring the power/standby key to the right edge of the rumored larger iPhone 6.


    Despite the increase in size, however, some OEMs continue to resort to the top edge. HTC’s One M7 and One M8, for instance, feature top-mounted power buttons. But at the very least, these buttons are dual-purpose and have a logical reason for their positioning. The power buttons on the M7 and M8 double as IR blasters. It wouldn’t make much sense for this to be anywhere but the top edge of the phone.

    g2 buttonsStill, at least one manufacturer is set on doing things differently.

    Last year, LG announced the G2 with what it called “a new perspective in smartphone design”. That fancy marketing speak translated to little more than the power and volume keys being located on the back of the phone, just below the camera. No, it wasn’t the first time a manufacturer had the idea of taking advantage of the mostly underused backside of a cell phone by placing some buttons there. But this time it at least seemed more logical than before.

    LG’s reason behind moving its buttons to the back is multifaceted. On one hand, the increase in size does make it difficult to reach said buttons without getting a better grip on the phone. On the other hand, bezels (read: wasted space around the display) also make gripping phones increasingly difficult as smartphone sizes increase. By moving the buttons to the back LG was effectively killing two birds with one stone – making the buttons easier to reach with a natural grip and slimming down the bezels on the side of the phone.

    At first, I was marginally impressed with LG’s take on solving one of the problems I’ve had with most modern smartphones. But the minute I got my hands on the G2, it became very clear the concept didn’t hold up so well in practice. The buttons were difficult to locate blindly. To adjust volume with the phone on the table, you either had to pick it up or double-tap the display to turn it on (which only worked about half the time), unlock it, pull down the notification shade, and adjust the volume through an on-screen slider.

    I had to train my brain to stop sliding my finger along the edge of the phone to find the volume rocker, and feel for the buttons on the back to change the volume. In practice, the rear buttons of the G2 were more of a hassle and gimmick than a truly useful and progressive innovation.


    However, a few weeks ago (and again last week), I was sent a G3 for review. I figured I could give the rear buttons another chance.

    It didn’t take long for me to realize that I really liked the G3. It’s a pretty phone with some killer specifications, and the software is fathoms better than last year. Like with the Moto X, the slim bezels make you feel like you’re getting away with something. The camera isn’t half bad (it isn’t terribly impressive either), the battery life could be far worse, and the QHD display is gorgeous (though a little warm and washed-out).

    rear-buttons-g3I thought maybe I could learn to like the buttons because, frankly, I would like to carry the G3 as my personal phone.

    Nope. I’m not quite a week in with the AT&T LG G3. I’ve been using it off and on as I work on content and tinker in the afternoons, and I can confidently say the rear-mounted buttons on the G3 are easily one of its weakest points. I still have to adjust my grip to tap the power button. I have to pick up the phone to adjust the volume because, for whatever reason, AT&T decided to remove the brightness and volume sliders in the notification shade. (Sure, they took up a fair amount of space, but I’d rather deal with a little notification clutter and be able to adjust volume without picking the phone up.) And taking a screen shot with the G3 is one of the most awkward and uncomfortable things, since you have to hold the power and volume down buttons simultaneously.

    I know vehemently hating the rear-mounted buttons puts me in the minority. And I don’t think they’d keep me from buying the G3 for my personal phone or recommending it to others. But seriously, LG, the rear buttons aren’t working out. They’re not innovative, useful, natural to use, or beneficial in any other way than trimming down the bezels.

    Tell me, readers. Do you hate LG’s rear-mounted buttons as much as I do? Or do you actually like them? Sound off below!

    Taylor Martin

    Based out of Charlotte, NC, Taylor Martin started writing about technology in 2009 while working in wireless retail. He has used BlackBerry off and on for over seven years, Android for nearly four years, iOS for three years, and has experimented with both webOS and Windows Phone. Taylor has reviewed countless smartphones and tablets, and doesn’t go anywhere without a couple gadgets in his pockets or “nerd bag.” In his free time, Taylor enjoys playing disc golf with friends, rock climbing, and playing video games. He also enjoys the occasional hockey game, and would do unspeakable things for some salmon nigiri. For more on Taylor Martin, checkout his Pocketnow Insider edition.

    | Google+

    Sours: https://pocketnow.com/lg-g3-rear-buttons

    On lg back button power

    Turn on the phone.

    Stop pressing the button when the screen lights up. To turn off the phone, press and hold the power button on the back of the phone. Older LG bar phones have the power button on the top right side of the phone. Press and hold the power button to turn it on.

    Click to see full answer

    People also ask, what do you do if your LG phone wont turn on?

    Device Won't Turn On / Off - LG. Press and hold the Power button for approximately 10 seconds or until the device power cycles. If the device doesn't power on or is unresponsive, attempt the following: Plug the device into a manufacturer-approved wall charger and wait 1-2 minutes.

    Subsequently, question is, why did my phone turn on safe mode? Safe Mode is usually enabled by pressing and holding a button while the device is starting. Common buttons you would hold are the volume up, volume down, or menu buttons. If one of these buttons are stuck or the device is defective and registers a button is being pressed, it will continue to start in Safe Mode.

    Keeping this in view, how can I turn my LG g4 on without the power button?

    How to turn ON without using the power button with Android 6.0:

    1. When the LG G4 is turned off, press and hold the volume button for a few seconds.
    2. While holding the volume button, connect the G4 to a computer using a USB cable.
    3. Wait for your phone to boot to Download mode.

    What does it mean when your phone wont turn on or charge?

    If you do, it means your battery doesn't have enough power to turn on or display any content on the screen. Let it charge for 30 minutes, then try again. That might mean that your battery is dead and needs replacing. If your phone has a removable battery, you can pick up a new one on Amazon for a decent price.

    Sours: https://findanyanswer.com/how-do-you-turn-on-an-old-lg-phone
    LG G3 Unresponsive Main Button Fix (Rear Button)

    Learn how to master reset the LG G3 using the menu or hardware keys.



    Master reset from settings menu

    A master reset restores the original factory settings and may delete your personal data on the internal storage, such as downloads, ringtones, images, apps, contacts, and Visual Voicemail. It does not delete data stored on the SIM card or SD card.

    1. Back up data on the internal memory.
    2. From any home screen, tap Apps.
    3. Scroll to and tap Settings.
    4. Tap 'General,' then scroll and tap Backup & reset.
    5. Select or clear the following check boxes:
      • Back up my data
      • Automatic restore
    6. Tap Backup account and follow the steps to create Google backup account, if necessary.
    7. Tap Factory data reset.
    8. Review the warning message and select or clear.
    9. Tap Reset phone.
    10. Tap Erase everything.
    11. Tap OK.


    Master reset with hardware keys

    A master reset restores the original factory settings and may delete your personal data on the internal storage, such as downloads, ringtones, images, SIM card or SD card.


    If the device menus are frozen or unresponsive, you can master reset using hardware keys.

    1. Back up data on the internal memory.
    2. Turn off the device.
    3. Press and hold the Power buttons on the back of the device.
    4. When the LG logo appears, release and then re-hold the Power button while continuing to hold the Volume down button.
    5. The Factory data reset screen appears.
    6. Press the Volume down button to advance the cursor until Yes is selected.
    7. Press the Power button to confirm.
    8. The Erase all user data and restore default settings creen appears.
    9. Press the Volume down button until Yes is selected.
    10. Press the Power button to confirm.
    11. The device will now reset itself. Wait until the process has finished.
    12. Your device now has been reset to its original factory settings.


    Soft reset with hardware keys

    A soft reset is a simulated battery removal. This is used to power a device off when the screen is frozen or unresponsive and the device it has an internal battery that cannot be removed. It does not cause loss of personal data on the device.


    Press and hold the Volume down and Power buttons at the same time for up to 45 seconds, or until the device resets.

    Sours: https://www.t-mobile.com/support/devices/android/lg-g3/device-resets-lg-g3

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