battery drain

Dear all, I'm using my mi4c for several months, and I'm very pleased with this phone. Untill last week, it seems that my phone draines the battery very, very fast. When the phone was new I could use it al least the entire day without fully draining the battery. Now the percentage drops from...

Hey guys. Since latest weekly ROM an App called mediaserver is always on top of my battery drain list. As it is an integrated App I cannot use any energy saving method. Anyone knows either how to fix this or what this App does? Thanks in advance