I had similar issues periodically. I use a Belkin Qi wireless charging pad (not fast/rapid) where I would place the phone on the pad overnight to charge and when I would wake up, sometimes it would not be fully charged (usually around 75-85 percent). It did not happen every night, but as one poster mentioned, after the recent software update, I have not experienced any problems with charging. Fully charged when I wake
It could also be a coincidence, but ever since I turned off AOD and location and just use the night clock, it's charged to 100 percent.
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