Lenovo k4 vibe this mobile is best handset to use. I m using this mobile from one and half year. This handset no charging problem so far.just battery lost some of charg and its normal for a year of usage I suggest you bring the your device and charger together to service center to have them cheak perphaps battery needs to replacement hope all goes well no matter how beautiful you can make your phone but quality will naver change worst ever launched phone in india features sound attractive but if you’re phone will stop working after 5-6 months you buy it what the the you providing so many feature even the dont stop here they will harass in to service center I suggest you to buy band phone which has good experience in the good quality and service when if you have pay little more think how much trouble you can avoid.