LG L3 E405 is an entry level smart phone. It is a continuation of the L series of LG . Its specifications are :

SIM Dual SIM (Mini-SIM)
Dimensions 4.04 x 2.43 x 0.47 in
Weight 119 g (4.20 oz)
Display Size 240 x 320 pixels, 3.2 inches (~125 ppi pixel density)
Memory 1Gb Storage (expandable upto 32Gb), 384 MB RAM
Data GPRS, EDGE, WLAN, Bluetooth, USB
Camera 3.15 MP, 2048×1536 pixels, autofocus
OS Android OS, v2.3.6 (Gingerbread)
Chipset Qualcomm MSM7225A Snapdragon
CPU 800 MHz Cortex-A5
GPU Adreno 200

LG Optimus L3 Quick Memo

It has all features of a typical Android smartphone. But, what makes it unique is its inbuilt hidden feature called QuickMemo. It allows you to take memos or notes quickly when you are in a hurry or when you need to jot down some information while you are on phone with someone. Not just that, you can also take screenshots, edit them and write on them.

 

Quick Memo

To open the QuickMemo menu, L3 users should hold up and down volume keys simultaneously. Then, they are presented with a blank screen where they can write anything they wish.

As you can see, this feature can be quite handy to the users of LG Optimus L3. But, if you possess a different Android phone, don’t worry, there are plenty of apps in Play Store which do the same job as that of QuickMemo, and provide you with even better features.

Alternatives : Evernote, GNotes.

Tip provided by Amit Chaudhary.
 
LG L3 E405 Specifications’ source : GSMArena