Earlier I was facing an issue with touch, there were automatic touches , so I went to the service centre and they updated the software. Then I realised that signal reception is poor than other phones so again went to that Nokia Care they again told me that they will reinstall software and everything will be fine. But, after getting the phone from service centre I got a system update and after installing this I'm not getting 4G+ anymore in LTE Advanced area where I got 4G+ earlier. Also, Career video calling option sometimes not showing even when Volte enabled, it's showing only in settings when Volte and 4G mobile data both enabled, and also facing automatic touches too. Please help!