Monday, 1 August 2016

"Android is upgrading: Optimizing apps" every time I reboot

My phone's Java VM was originally dalvik when in Kitkat. I did a firmware upgrade to lollipop, and now my Java VM has changed to ART. I mentioned that because I've read people say this is the cause for the "Android is upgrading: optimizing apps... Estimated max time xxx seconds".
So I want to know how to get rid of this optimizing thing because this takes a lot of time when booting up.
Device info: ZF5 A510CG WW

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