iPhone Apple says you’re supposed to get a notification when Optimized Battery charging is on, but I don’t get one

[RickCMC]

From Apple’s website: “When optimized battery charging is active, a notification on the Lock screen says when your iPhone will be fully charged. If you need to have your iPhone fully charged sooner, touch and hold the notification and then tap Charge Now.”

I’ve never once seen this notification and I have Optimized Battery Charging turned on. Anyone else getting one?

 

[mohdamerul]

Me either

 

[VineRider]

I suspect it is still learning your charging patterns. This might take several days.

 

[RickCMC]

I suspect it is still learning your charging patterns. This might take several days.

Yeah that makes sense

 

[Banglazed]

Do you Location Services on?