I have a Galaxy A01 SM-A015M. On October 4th, there was an update, Version A015MUBU4BVH2 / A015MOWO4bVH2 / A015MUBU4BVH2. Since then, my battery consumption doubled. Same use, same apps, nothing else changed. I used to charge my phone once every two or three days. Now, I'm charging every day. Even worse, sometimes when I'm out listening to podcasts with the phone in my pocket, it gets hot and I have to turn it off.