I bought my k4 on 26 of feb.talkimg about its feature- it has 3 gb of ram which is very good in this range, phone dorleds not hangs.charging is very fast and some add feature are SUPER POWER which allows u to use your phone only calling feature( u can add more if u want) .bcz of this feature phone battery life xtends very much.camera is very good, it also has very good feature.like auto selfie etx.phone is light in weight.
Main feature is THEATRE MAX technology.i have my vr set.it gives a feeling of theatre while watching movie but movie pixlate even if u see 1080 res movie.
BUT ON ALL ACOUNT IT IS A VERY GOOD PHONE.