My Samsung Galaxy Y Pro Duos B5512

From long time I was searching for a smart Phone which suits to my budget and specifications required (WiFi ,dual Sim, Qwerty ) At last Samsung announced a phone with these features.
On 14th April my Brother brought this phone from Delhi at the cost of near 9500/-
I was aware of the some issues like battery problems and confusions related to dual Sim standby and dual Sim active. But as per cost this was acceptable.
The phone is powered by android Gingerbread 2.3.6 version . Samsung has done some changes to make it usable for Dual Sim.
I have WiFi broadband at home and Office. These are the places where i stay most of the time of my daily life. I rarely use GPRS from Sim.

The most common asked questions about this phone are.
Is this phone dual Sim active ?
No this phone is not Dual Sim active . This Phone is Dual Sim standby. another Sim will be out of range when one Sim is in use.
refernce
Does Skype video calling works on this phone ?
No Skype video calling is not currently (16/April/2012) supported by this phone as per This link.
Fring is working Fine for video calls
battery backup ?
This phone hardly last for 24 hours for me. I use WiFi connectivity always ON.
Suggestion for better battery backup are
1. Uncheck/Disable Settings > sound settings > feedback > audible selection (Play sound when making screen selection
2. Disable WiFi , Bluetooth and GPS when not Required.
3. Disable Auto Sync From Setting > Accounts and Sync (you can sync manually when required).
4. Use less screen timeout and low brightness for screen.
5. Don't use Live wallpaper and lot of application who run in background. 

This phone is not so much expensive So i think features are O.K for this value.
Only Few Dual Sim android phones are available in market. 
Positives
1. Touch and type both are working nicely.
2. Optical trackpad is also working nicely.
3. Data transfer speed over WiFi is good.
4. Dual Sim switching is easy. Button available on Keypad.

Negatives
1. low internal memory 161 Mb , Limited apps can be installed only.
2. Low Ram 384 MB (289 Mb shows in taskmanager)
3. Low battery backup
4. No flash and light sensor

Apps I use are
1. Netquin
2. whatsapp
3. facebook messenger
4. facebook for android
5. gtalk (pre installed)
6. gmail (pre installed)

Don't update inbuilt google apps if you don't want to run out on memory on you phone.