I bought Samsung galaxy grand 19082 with great pride 8 months back. By around 4th month, the phone book response became very slow like when a name is searched, you will get the screen coming up after around 1 minute.
I went to the service center and they re-installed the OS. The response improved a little bit. By the next 2 months, the response became dead slow that even incoming calls also became non - responsive. I started hitting the screen to take the incoming calls.
I have given this to service center again and I found the que is very long for this model. Almost everyone has similar issues. Pls do not waste money in this brand.