Yesterday I have updated my device with February Security Patch but since then my phone's battery is draining very Fast and my Note 4 is also Overheating by normal Usage ..
Thank you for sharing your concern. We would like to inform you that kindly check the performance of your device after following below mentioned steps:
1)For Heating issue: We would recommend taking some troubleshooting steps to further isolate what you may be experiencing. Find troubleshooting steps on provided link: http://www.samsung.com/in/support/skp/faq/1119803
2)For battery drainage: We would recommend taking some troubleshooting steps to further isolate what you may be experiencing. Find troubleshooting steps on provided link http://www.samsung.com/in/support/skp/faq/1101689
