How to Hard/Factory Reset | Bypass screen lock on LG GT540F?

Overview

SpecificationLG GT540FOptimus

LG GT540F runs on the processor 600 MHz with - . It has internal memory 139MB and RAM (RAM) 156MB and supports microSD, up to 32 GB. This model also has 3.5mm jack, supports Bluetooth version 2.1, A2DP and GPS technology Yes, with A-GPS . The USB port supports microUSB 2.0 and Wi-Fi 802.11b/g. Its technical characteristics are also the screen size 3.0 in (~45.1% screen-to-body ratio), the resolution 320 x 480 pixels (~192 ppi pixel density) and the type TFT.

Model and Features
Model	LG GT540F
Series	Optimus
Release Date	June, 2010
Body Depth	12.7 mm (0.5 in)
Body Dimensions	109 x 54.5 mm (4.29 x 2.15 in)
Body Weight	115.5 g (4.06 oz)
OS	Android 1.6 (Donut), upgradable to 2.1 (Eclair)
Hardware
CPU	600 MHz
CPU Cores	-
RAM	156MB
Internal Memory	139MB
External Memory	microSD, up to 32 GB
Network and Data
SIM	1 Mini-SIM
2G bands	GSM 850/900/1800/1900 MHz
3G bands	UMTS 2100 MHz
4G bands	-
5G bands	-
Technology Data	GPRS,EDGE,HSDPA
Display
Screen size	3.0 in (~45.1% screen-to-body ratio)
Type	TFT
Resolution	320 x 480 pixels (~192 ppi pixel density)
Colors	256K colors(65K colors effective)
Battery and Keyboard
Battery	Removable Li-Ion 1500 mAh
Physical keyboard	-
Interfaces
Audio output	3.5mm jack
Bluetooth	version 2.1, A2DP
DLNA	Yes
GPS	Yes, with A-GPS
Infrared port	No
NFC	No
USB	microUSB 2.0
WLAN	Wi-Fi 802.11b/g