For the very first time since I bought Galaxy m30s in October, today my phone get charged slowly.i put the charge when charging percentage is at 41% and it takes about 3 hours to reach 100%.it never happened since I bought this phone.pls tell me wha...

What is reserved ram that can be seen in one ui in device care app.is it comes under free ram or not. And what it is reserved for i mean it reserved for what use?? Some one explain please.