Today I am going to share my experience about how much bad performance of samsung galaxy s duos 2(s7582)
I purchased this phone in 2013
after a one week this phone will many time hanged in the whole day.
I noticed battery back up also become down after one week.
very poor performance because processor is only dual core 1.2 ghz and ram is 768mb. Then you can imagine how can manage this phone all over utility apps like whatsapp, messsenger, hike, skype, etc.
If you can root this phone then you can improve performing speed. Very bad thing is samsung not provide any ota update for this phone maybe this price range of all phones I think I waste my money to buy this phone
sorry for bad English
thanks