My lglf7700 has the passcode enabled and i have forgotten it how do i do a factory reset please.

You will need to do a full factory reset.

Hi,
If your tablet is new it will not have a pin unless you have setup one yourself. If it's 4G enabled then it's most likely the pin number of your SIM card it's looking for. This would have been on the card your SIM came with? If you do not have this, you can contact your network carrier to retrieve it. If it's a pin/passcode you setup yourself and you have forgotten it, you will need to factory reset your device. But be aware this will wipe all your data that is on the device, but if it is new I imaging there is not much data on it if anything. Hope this helps.

Watch this video: Remove Forgotten PASSCODE PASSWORD Unlock For ALL Android Devices...
Caution: you will lose all apps you added and data, since the hard reset sets it to factory defaults as though it was new.

link
iOS Forgotten passcode or device disabled after entering wrong passcode

To recover a locked iPhone iOS Forgotten passcode or device disabled after entering wrong passcode

Hello
What you can do is factory reset it.
To do so type in your wrong password 5 times and when an option window pops up that should give you the option of either resetting your kindle or waiting 30 seconds, chose do factory reset.

When your iPod Touch displays a message telling you to connect it to iTunes, it may be in recovery mode, or have been disconnected in the middle of an update.
To get rid of the screen, you must reset your device. If in passcode mode, an iPod Touch must be manually unlocked or fully restored to get back to the home screen.Forcing a Reboot
When your iPod Touch is stuck on a screen that is instructing you to connect with iTunes, a normal restart will probably not work, as the hard drive has become frozen.
You can still, however force the iPod to reboot using a process called resetting.
To reset an iPod Touch, hold down the "Sleep/Wake" and "Home" buttons at the same time until an Apple logo appears, indicating that the device is rebooting.
When an iPod Touch reboots, it always goes back to the lock screen. Passcode mode will still be enabled.

Unlocking With the Passcode
If you know the passcode for your iPod Touch, slide the "Slide to Unlock" arrow and then enter your code on the next screen.
Upon entering your password, you will be directed to the device's home screen. If you enter the wrong password too many times, it will become disabled temporarily.
The iPod Touch can also be set to erase all content after 10 incorrect passcode attempts if you previously enabled this feature, don't attempt more than 9 entries.


Unlocking Without Passcode If you have forgotten the passcode to your iPod Touch, the only way to unlock the device is by restoring it.
Restoring an iPod Touch returns it to the factory settings, meaning that any settings, applications or music you added to the iPod are removed.
Once the device is restored, you can re-add your downloads and other information using the backup copies in your computer iTunes program.
The passcode setting will be disabled unless you manually enable it again.

Consideration

If you don't have a backup of your music and applications in iTunes on your computer, you can also download another copy from the iTunes Store or App Store on your device after a restore.
Any photos that are deleted during restore, however, will be lost forever if a backup does not exist.
Always back up your information via sync on a regular basis to avoid this problem.

you can do a factory reset which will wipe the passcode you will need to plug it into itunes then put it into recovery mode and in itunes look for the reset button and go from there

Hello All!

I had the same problem, my officemate came to me and asked formy help, her nephew tinkered on her ipod nano and set the passcode, and did not remember what it was.

the ipod nano can be unlocked when connected to the computer with itunes but, if you want to change the passcode to a new one it will ask for the old code which i dont have. even if you reset all the settings to factory default setting it will not reset.

this is a little hard for some of you to follow, but, to totally remove the unknown old code this is what i've done:
first, sync your music to your PC so that you have a backup of all your music. Second, make sure enable disk use is checked. third, format your IPOD. This sounds nut but this did the trick.

after doing this, check if you can set a new passcode to the screen lock, you should be able to do it. and please dont forget the new passcode. I hope this helps.