I bought this mobile 20 days ago by Mi store. There delivery service was very poor. They delivered me this mobile after 6 days. Phone have lots of problems. It getting heat while charging and it takes too much time for full charging. Battery backup is good. But perfomance is very poor. Sometimes its hang while opening an application and takes too much time to work properly otherwise I have to reboot it. Design and looks is good. But sound of speakers is very low. Ram is 4GB but still its hang. No value for money so I recommened dont buy redmi note 4.