After one month use of this mobile, this is my 3rd review and feedback to the Samsung Mobile India.
1.. Bluetooth is not so much good to connect or transferring files of this mobile. I have faced also facing issue each and every time when I want to transfer files through it's Bluetooth to my HP laptop. First of all not so much easily connect to the laptop when it's connected the files doesn't transfer easily. Most of the it failed and hanged up after tranfer some. Just stucked up in between the transfer. From the first day I have faced this issue.
I didn't faced this type os issue with my onther mobile when i was use Bluetooth to my laptop.
I'm giving the screenshots of this with the time difference you can see the file just stucked in 17% from 15 minutes. See the time difference in between this screenshots, same the tranfer has been still stucked up in 17%
2.. The mic issue.. I am also facing a issue with its mic. When i speak through mic on speaker mode, and if it's closer to my mouth the other side person can listen properly with whom I am talking too.. but if I place the phone just a little bit far like minimum distance of one hand, it's mic doesn't catch my sound or word properly. The listener can't able to listen my voice properly and correctly.
I would request to the Samsung that please fixed this issues as soon as possible with your new updates.
Wifi always off with my laptop. I use lan connection when it needed. Wifi only use for the mobile. You can see on this pic. 
