iPhone 13 charging slow
I’ve been experiencing really slow charging with my fairly new iPhone 13. I plugged it in to charge last night around 10:30pm and I woke up around 9:30am with it only having charged to 72%. I turned off the optimize battery charging yet that hasn’t changed anything. I am using a charger block that came with older iPhone that has worked perfectly fine until yesterday. Is it my phone that’s the problem or my charger?
iPhone 13, iOS 15