Jokes aside, here are two generic sites talking about similar issues:
https://www.androidcentral.com/how-fix-slow-android-phone
https://www.androidpit.com/why-is-my-android-device-running-slow
They contain about everything that can be said to help you based on the information you provided.
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Yes, love the Z5C. I don't and haven't had performance problems (other than getting a bit hot sometimes). It's probably some background app?
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I'm using a Sony Xperia Z5 compact, and it's been great, until yesterday when it started show poor performance.
It was so slow, that it took a few mins to open up an app, and even then, sometimes it closes the app.
Next day, it was working fine, then started showing the same poor performance.
Does anyone use the same phone and have had any issues similar to mine?
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