Device: Panasonic Eluga Ray Max Android: Marshmallow 6.0.1 Root status: Unrooted So, this phone was fine for almost a year. But recently, when I had to reboot my phone (to change the SIM card, I do that every week), it took a long time to start. I get a message saying "Android is starting". Below that, it's written "Optimising App (1/1)". I think we get the optimising app message each time the device gets a software update. That would be normal. But, I get this message every time I reboot the phone. Although, after that message, Android does start. But it's an inconvenience because it takes about half an hour to complete. I would like to know, what are the possible causes for this? And how do I stop it? One thing I would like to add is that I got a lot of apps on this phone. Is that causing it?