I suggest turning off your phone at night when charging(unless of course you need it on for work purposes, in that case, STOP reading here....lol)
When I don't turn it off and it charges during the night, its groggy like a teenage boy in the morning.
When I turn it off at night and it charges, it wakes up like it had 5 coffees, read the morning paper and gone for a walk.
the morning reboot seems to help the operating system.
Give it a shot!!
Happy Birthday Fido Community
***Edited to add Labels***