12 GB RAM, 256 ROM. 100% authentic. The phone has not been opened yet or serviced in any way. Box, charger, and HDMI cable for connecting to TV or laptop are all included. There is no problem with the display, but the top glass is slightly cracked. It can be repaired for about 1000 to 1500 Taka. There is no problem using the phone, I am not getting it repaired because the phone would need to be opened.