Never happened like this. Started dropping 10%+ overnight. I should admit p7 standby drain was never that good. Used to drop around 6-7% on average but suddenly without installing any other apps or making any major changes to my device it started happening. The device is updated to November patch, all major apps is being battery restricted except the few apps i use daily. Like whatsapp reddit... Has anyone fixed this issue or is there any fix ?! TIA.