How to Hard/Factory Reset | Bypass screen lock on LG VS820?

Overview

LG VS820 runs on the processor 1200 MHz ARM Cortex-A53 with Quad-core . It has internal memory 8GB and RAM (RAM) 1GB and supports microSD, microSDHC, TransFlash, microSDXC up to 128 GB. This model also has 3.5mm jack, supports Bluetooth version 4.1 and GPS technology Yes, with A-GPS, GLONASS, Geotagging, S-GPS, QuickGPS . The USB port supports microUSB 2.0 , USB charging and Wi-Fi802.11b/g/n. Its technical characteristics are also the screen size 4.5 in (~66% screen-to-body ratio), the resolution 480 x 854 pixels (~218 ppi pixel density) and the type TN-TFT LCD.

SpecificationLG VS820Lancet

Model and Features
Model	LG VS820
Series	Lancet
Release Date	October, 2015
Body Depth	10.7 mm (0.42 in)
Body Dimensions	64.8 x 129.8 mm (2.55 x 5.11 in)
Body Weight	143 g (5.04 oz)
OS	Android 5.1.1 (Lollipop)
Hardware
CPU	1200 MHz ARM Cortex-A53
CPU Cores	Quad-core
RAM	1GB
Internal Memory	8GB
External Memory	microSD, microSDHC, TransFlash, microSDXC up to 128 GB
Network and Data
SIM	1 Micro-SIM
2G bands	CDMA 800/1900 MHz
3G bands	CDMA 800/1900 MHz
4G bands	LTE 700 (B13), LTE 850 (B5), LTE 1700/2100 (B4), LTE 1900 (B2)
5G bands	-
Technology Data	CDMA2000 1x, CDMA2000 1xEv-DO, CDMA2000 1xEv-DO Rev A, LTE
Display
Screen size	4.5 in (~66% screen-to-body ratio)
Type	TN-TFT LCD
Resolution	480 x 854 pixels (~218 ppi pixel density)
Colors	16M colors
Battery and Keyboard
Battery	Removable Li-Ion 2100 mAh
Physical keyboard	-
Interfaces
Audio output	3.5mm jack
Bluetooth	version 4.1
DLNA	No
GPS	Yes, with A-GPS, GLONASS, Geotagging, S-GPS, QuickGPS
Infrared port	Yes
NFC	No
USB	microUSB 2.0 , USB charging
WLAN	Wi-Fi802.11b/g/n