Chinese vendors like Xiaomi , Huawei, Lenovo, Asus create great imapact on Mid range smartphone industry with their pretty powerful Smartphone yet at really affordable price point, they shaken the market of tier one brand like Samsung , sony , HTC etc
So to Give answer Sammy also launched their affordable mid range phones to compete . Galaxy J5 is One of them. Decide based on Pros and Cons
Pros
Super Gorgeous 720p HD Amoled Display
Dual sim
Micro SD card support upto 128gb
Good Cameras with f/1.9 aperture for decent low light images
Great battery life
64bit processor
Cons
Not great front camera
Boring Design same like previous sammy phones
Plastic build
1.5gb RAM and 8gb Internal memory
Snapdragon 410 at 12k price point ( Do remember 410 is not bad processor but competition offering better performing processor at this price)
This is the phone Only for those who want only tier one brand phones . Rest will have better alternative 1.5gb ram is low for Android now a days specially. Competition offering 2gb ram phones at 7k price bracket and 3gb at 9k .