There's no headphone jack again, sadly, but there is a Lightning to 3.5 mm headphone jack adapter in the box. (digitaltrends.com)
You can also use the 3.5 mm headphone jack adapter when the need arises. (flipkart.com)
Handset x 1 USB - C Earphones x 1 Charger x 1 USB - C Cable x 1 USB - C to 3.5 mm Headphone Jack Adapter x 1 Flexible Clear Case x 1 Quick Start Guide x 1 Eject tool x 1 (consumer.huawei.com)