If you forgot your pattern unlock code or pin you can peform a hard reset to return it to a factory defautlt set.
Warning! All data will be lost!
LG Optimus L5 II E460 data:
GSM frequencies :850 900 1800 1900
Standard UMTS :900 2100
Type :TouchDimensions (W x H x D) :117,50 x 62,20 x 9,20 mm
Main display :Color / IPS TFT
16M colors
480 x 800 px (4.00") 233 ppi
Standard battery :Li-Ion 1700 mAh
Internal memory :4 GB
RAM memory :512 MB
Memory cards : microSD, microSDHC (up to 32 GB)
Operating system :Android 4.1 Jelly Bean
Processor :MediaTek MT6575
Processor clock :1,00 GHz
Touchscreen : yes
SAR (10g) :0,867 W/kg
How to hard reset:
1.Power off your phone
2.Push together volume down + quick button + power key until lg logo appears on the screen
3.Wait until the format ends
4.Wait until the phone restarts
That's it!
Here is video how to do:
VIDEO