How to Hard/Factory Reset | Bypass screen lock on Samsung GT-I9020?

Overview

SpecificationSamsung GT-I9020Nexus S

Samsung GT-I9020 runs on the processor 1.0Ghz Cortex -A8 with Single-core . It has internal memory 16GB and RAM (RAM) 512MB and supports -. 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 802.11 b/g/n, DLNA, hotspot. Its technical characteristics are also the screen size 4.0 inches (~58.3% screen-to-body ratio), the resolution 480 x 800 pixels (~233 ppi pixel density) and the type Super AMOLED capacitive touchscreen.

Model and Features
Model	Samsung GT-I9020
Series	Nexus S
Release Date	December, 2010
Body Depth	10.9 mm (0.43 in)
Body Dimensions	123.9 x 63 mm (4.88 x 2.48 in)
Body Weight	129 g (4.55 oz)
OS	Android 2.3 (Gingerbread), 4.1.2 (Jelly Bean), not upgradable to 4.2 (Jelly Bean)
Hardware
CPU	1.0Ghz Cortex -A8
CPU Cores	Single-core
RAM	512MB
Internal Memory	16GB
External Memory	-
Network and Data
SIM	1 Mini-SIM
2G bands	GSM 850/900/1800/1900MHz
3G bands	HSDPA 900/1700/2100MHz
4G bands	-
5G bands	-
Technology Data	GPRS/EDGE
Display
Screen size	4.0 inches (~58.3% screen-to-body ratio)
Type	Super AMOLED capacitive touchscreen
Resolution	480 x 800 pixels (~233 ppi pixel density)
Colors	16M colors
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	-
NFC	Yes
USB	microUSB 2.0
WLAN	Wi-Fi 802.11 b/g/n, DLNA, hotspot