https://techcrunch.com/2018/02/26/in-2018-the-headphone-jack-is-a-rare-beast/

The wireless industry is currently rolling out the latest and greatest at Mobile World Congress. Nineteen phones were announced around this industry event including the latest from Samsung, Sony, Nokia and LG. These are the phones that the manufacturers will push on consumers in 2018. The 3.5mm jack is available on the vast majority of the phones though the 3.5mm jack should only be considered standard equipment on mid-to-entry level phones — it’s disappearing from flagship phones at a rapid pace.

Out of the 19 phones announced at MWC 2018, 17 sport the classic 3.5mm headphone jack. It’s missing from these three models: Sony XZ2, Sony XZ2 Compact and the Nokia 8 Sirocco. Interestingly, these three phone’s predecessors included a 3.5mm jack.