Have you tried sending your phone power mode to medium? Also, I use an app called kapersky battery life that will close background apps in try to help save your battery extended usage throughout the day.
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Idk if this link will post in here. But I have looked this up and this might help fix the issue. https://www.nextpit.com/how-to-improve-your-gps-signal-on-your-android
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Have you tried a different keyboard? I use an app called g board & the text to speech is absolutely good. I noticed that same issue when I first got a Samsung from the after using ZTE phone for a few weeks.
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