I’ve seen different answers everywhere. At how many cycles did your battery health start to go down noticeably?
It’s really different for everyone. You can’t predict it, unfortunately.
I’ve got the 15 Pro, and I’m at 95% health after 292 cycles. I use my phone pretty heavily, though. 
CathyGenesis said:
I’ve got the 15 Pro, and I’m at 95% health after 292 cycles. I use my phone pretty heavily, though.
Haha, same here! I’m at 292 cycles with 95%, but I’m a heavy user too (just the base 15).
CathyGenesis said:
I’ve got the 15 Pro, and I’m at 95% health after 292 cycles. I use my phone pretty heavily, though.
Mine’s at 92% after 311 cycles. It stayed at 100% until about 285, then it started dropping fast.
@Vaughn
I’m at 92% after 400 cycles. I don’t even use it heavily. Just some hotspot sharing and occasional charging at work.
Do you charge it to 100% every day? Let it hit 0%? How heavy is your usage?
@Hale
Looks like you’re doing fine. 
15 Pro with 326 cycles, 90% health. Started using it in December 2023.
Got my iPhone 15 Pro on October 19, 2023. I’m at 333 cycles with 91% health now.
Casey said:
Got my iPhone 15 Pro on October 19, 2023. I’m at 333 cycles with 91% health now.
240 cycles here.
@kagawa
That’s wild!
Why are you all stressing over these numbers? They don’t mean much in real life.
The real answer is it depends on your luck.
For me, it started around 60 cycles.
Mine started around 250 cycles.