Manufacturing issues for the iPhone 15 Pro series are expected to be resolved before the 15 series - iPhone Mania

Regarding the iPhone 15 series and iPhone 15 Pro series, which are rumored to have manufacturing issues, Keizai Daily reported that the issues with the iPhone 15 Pro series are expected to be resolved first.

iPhone 15 production enters first phase, with initial trial production

iPhone - Apple

iPhone 15 Pro production issue may be resolved before delay

iPhone 15 Redesign Tops Users' Wish Lists, But 'Mini' Form Factor Still Has Its Fans : r/apple

Kuo: iPhone 15 Pro Max still battling 'production challenges' as delays mount - 9to5Mac

Peak' Smartphone Design: What We Can(not) Expect from the iPhone 15 and the Galaxy S24 - PhoneArena

Kuo: iPhone 15 Pro Max production lags as Apple continues to resolve production issues - 9to5Mac

Vodafone Fiji - EXPLORING THE APPLE IPHONE 15

iPhone 15 Pro faced early challenges, now fixed