Coolpad dazan 1 is a 4g mobile handset but it could not support jio 4g network.the company gives fake description for it.i brought this mobile to use jio 4g service but I could not use this service for their fake description.it was totally disappointed me.but other service of this mobile is not bad.no hanging problem or heating problem for it.battery back up is also good.camera is average.but I could not like this mobile because I brought this for use only jio 4g service.its not right to give fake description.if you are a normal user then you can use to it.