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The answers to battery life varies depending who you speak to and it varies on this forum too.

I just charge my phone whenever it gets low to around 20% up to around 80%.

I do charge overnight when I need to but can avoid it from sitting at 100% all night even though I have the Optimise Battery Charging setting on.
 
If you are using iPhone 11 I need to know about battery life? Is it ok to charge the device overnight?

It only matters if you plan on keeping this phone for over 2 years... if you’re going to get a 12 I wouldn’t care since you’ll upgrade before it’s an issue anyways
 
I charge my 11 overnight. Always have with other phones too and never had problems
 
If you are using iPhone 11 I need to know about battery life? Is it ok to charge the device overnight?

Battery life, - excellent. I go about 2 to 2 1/2 days between charges. I usually throw it on the charger between 5% to 10%, a couple of times I ran it down to 1%. Which is typically what I have done with all my iPhones.

Charging it overnight - absolutely.
 
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