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How to factory reset the LG G4: improve your G4's performance

AndroidPIT LG G4 display front
© nextpit

The LG G4 is a great phone but, like any smartphone, it can suffer at the hands of misbehaving apps, corrupted data and the odd bug. If clearing system caches, reinstalling rogue apps and exploring your device’s settings doesn’t cure your LG’s woes, a factory reset might. Here’s how to factory reset the LG G4.

LG G4 hero 23
The G4 is a solid smartphone, but it can suffer from bugs and app problems. / © ANDROIDPIT

Read this before you do anything!

A factory reset is a major operation. It’s designed to restore your phone’s software to the same condition it left the factory in, and that means deleting anything that didn’t come with the phone, including your apps and personal settings. In most cases, you can restore everything using your Google Account, but make sure you back up anything important. Better safe than sorry.

It’s worth noting that factory resets only apply to the phone, not to external items such as microSD cards: they’re not affected by the process. That said, you should make sure you back them up too.

You should also ensure your battery has a decent charge. You don’t want your phone running out of puff halfway through a crucial stage of the backup, reset or restore process.

LG G4 1 28
No, we haven't bent it. It's supposed to be like that.  / © ANDROIDPIT

When to factory reset the LG G4 and what to try before you do

For most problems, a factory reset is the last resort. That isn’t because it’s dangerous; it’s because it zaps all your stuff so it takes a bit of faffing around to get your phone back the way it was. The typical troubleshooting process goes like this: rebooting, rebooting in Safe Mode to see if an app is the problem, uninstalling and reinstalling suspect apps, clearing app and system caches, and then – and only then – performing a factory reset. You can go straight for the reset option if you wish, but it’s rather like using a rocket launcher to open a peanut.

If your problem is poor performance, we recommend giving Safe Mode a go first. To do that, press and hold the Power button until the Power Menu appears. Tap and hold Power Off and you should see an option for booting into Safe Mode. This restarts your device without any third party apps running. If you notice a spectacular improvement in performance or battery life, that’s a really big clue that a third party app is misbehaving.

android safe mode hero
On any Android phone, Safe Mode is a good way to identify if apps are the problem. / © ANDROIDPIT

How to factory reset the LG G4: the easy way, via Settings

Once you’ve backed up your stuff, go into Apps > Settings and switch to List View (Menu > List View) if you haven't already. Look for Personal > Backup and Reset and check the boxes for Back Up My Data and Automatic Restore. This will make your life much easier after the reset. If you don’t already have a Google account you’ll be asked to create one.

Done that? Time to nuke the LG from orbit. Tap Factory Data Reset, pretend to read the warning message and make sure Erase SD Card isn’t checked. Tap Reset Phone > Next > Delete All > OK and the reset procedure will begin. It takes a few minutes. Once it’s finished you can restore your data from Apps > Settings > Backup & Reset > Restore From Backup.

AndroidPIT LG G4 camera detail
If you can't use the screen, you can use the hardware buttons to reset your G4. / © ANDROIDPIT

How to factory reset the LG G4 when you can’t use the screen

Sometimes, you can’t use the screen to perform a reset: Android might not be booting, or something might be causing your phone to freeze when it launches Android. Never fear: there’s a way to factory reset the LG G4 using just the hardware keys. Here’s how to do it.

First of all, turn off your LG G4. Once you’ve done that, press and hold the Power and Volume Down buttons on the back of the phone. Wait until you see the LG logo appear, and then quickly release and then re-press the Power button. Hold it down, along with the Volume Down button, until you see Factory Data Reset appear on the screen.

Use the Volume Down button to highlight the Yes option and then press the Power button to confirm your choice. You should now see Erase All User Data And Restore Default Settings. Using the Volume Down button, highlight Yes and then press the Power button to confirm. Your LG G4 should now reset and, as with the software method, you can restore from a previous backup by going into Apps > Settings > Backup & Reset > Restore From Backup.

Have you encountered any LG G4 problems that even a factory reset can’t fix? Let us know in the comments below.

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Gary Marshall

Gary Marshall
Freelance writer

Former lion tamer, Girls Aloud backing dancer and habitual liar Gary Marshall has been writing about technology since Google was two guys in a garage. He's written for many fine magazines, newspapers and websites, written a range of how-to-books and a novel, co-written a BBC documentary series and dishes out weekly tech advice on BBC Radio Scotland.

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  • Matthew Sep 15, 2019 Link to comment

    I fractory rested my lg with the master keys because I got it from my step dad and when I went to add my google account it asked me to use a account already synced with it but the problem is my step dad gmail was deleted so we dont have a with it and he doesnt remember it. Is there a way to bypass this. You can email me at with steps if I dont remember I posted on this site.

  • Cheryl Grant Dec 30, 2016 Link to comment

    Factory reset not working phone still sticks when I click on yes to reset.

  • Ali Yeteroglu Sep 24, 2016 Link to comment

    When you use the hardware button combination for resetting mine lost the VoLTE feature all together... The authorized service had to go back several firmware updates and re-up dating to the current version just to get it back and it took around 3/4th of a day to do that. Normal reset through menu doesn't seem to effect that feature. It comes back by itself when you that... Just to give a heads up... Cheers

  • Tyson Mar 19, 2016 Link to comment

    Im on my second G4, the first had a total failure ofnthe the WIFI, and now my replacement suffered a software crash last night and is now completely dead, will not reset will not respond, is in the constant boot loop screen, it is by far the most troublesome phone I've ever owned. I will NEVER purchase another LG cellphone ever again, make it modular, make it nuclear powered i dont care LG knows absolutely nothing about making a lasting phone

    • Anjali Warland Apr 9, 2016 Link to comment

      Did you ever find a solution?

      • Tyson Apr 15, 2016 Link to comment

        Nope, LG South Africa ended up completely replacing the unit as it was unrepairable. The replacement unit lasted around 3 months and that too has stopped working but with a completely different issue altogether (the continual reboot issue). This one is currently in for repairs and I am awaiting the decision as to whether they are replacing / repairing it. The phone really is brilliant when it works, however it is unreliable, and I would absolutely never recommend it to anyone, ESPECIALLY when LG refuses to acknowledge the issue altogether. It will my my last flagship LG device.

      • Eddy S Jun 10, 2016 Link to comment

        Same problem here! I have had this phone since Sept 2015, absolutely love it , no issues, all of a sudden, bang it won't open, nothing at all. Now it'a a waiting game to see how the hell I will fix it. AHHH I hate technology

  • Danish Shamim Mar 16, 2016 Link to comment

    I've hit the "slow charge" problem with stock charger and cable - nothing seems to fix it - it takes 6 hours to charge - I'm tired of this phone - apparently a lot of users are affected by this problem, just google on xda forums

  • Derek Karnes Jan 7, 2016 Link to comment

    This is my 3rd G4. Nothing but problems. Latest is constant dropped network and/or data service. Hoping a full reset fixes that problem. I miss my Samsung, which is something I thought I'd never say, because it was awful most of the time, too.

  • Darren Polak Dec 8, 2015 Link to comment

    Had mine since day of release, go on holiday and the phone goes into a reboot loop! Can't even get to the recovery mode!

  • sacocheio Nov 24, 2015 Link to comment

    Same here, spectacular phone. G4 is the best phone I've ever owned. Fast, sharp screen, fantastic camera. Zero problems.

  • Ivo Stanchev Nov 23, 2015 Link to comment

    Same here no issues with the device so far

  • Steen Suurballe Nov 22, 2015 Link to comment

    same, zero problems with my G4

  • Dusan V. Nov 22, 2015 Link to comment

    I'm a proud owner and so far there is no single issue with my LG G4. I don't know why people are complaining so much about that phone.

    • d b Jan 18, 2017 Link to comment

      Honestly. I know this is an old post... and yes I DID just sign in to respond to this point.. but really who would say such a self centred thing. Dusan cannot understand why people are complaining because he hasnt had a problem with his phone ?!?!?

      Obviously anyone that has had problems did not follow procedure to check with him if his phone was ok. Im sure none of them would be unhappy with the issues they have experienced if they'd been able to bask in the warmth of Dusan's contentment.

      Edit:- I should add that I came across this post as a result of searches made following the seemingly terminal failure of my second G4.

      I was really annoyed about it, but of course now I read that Dusan's phone is trouble free so I am obviously feeling much more relaxed about it.

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