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I have a Kyocera Hydro View. Every time I restart my phone, it tells me that Android is optimizing apps. This takes anywhere from 5 to 15 minutes, and sometimes prevents me from using the phone when I need to use it.

What is Android doing, and why does it need to do it so often?

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This is something in Android that is called the dalvik-cache. It's basically an optimized version of the android package you usually install/download on your phone. This is usually done while installation and doesn't need to happen at every boot. However, in your case, reboots apparently trigger a dalvik-cache dump(for lack of a better word). So, Android has to optimize all apps all over again. I'd suggest you to try and diagnose why your phone is clearing it's dalvik-cache at every boot. Are you running a custom ROM?

  • It's been going on for the past month or two. – nhubbard Jun 17 '16 at 19:01
  • Try to recall as to what triggered it. Usually OTA updates trigger a dalvik-cache dump. – Sinchan Bhattacharjee Jun 17 '16 at 19:02
  • I have not had any OTA updates, nor am I able to purposely trigger it. Also, I'm on Lollipop. Isn't Dalvik replaced with something else? – nhubbard Jun 17 '16 at 19:03
  • Yes. It's called ART. However, the cache is still called dalvik-cache. – Sinchan Bhattacharjee Jun 17 '16 at 19:04

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