The widely respected Apple analyst Ming-Chi Kuo has reduced his expectations for iPhone shipments in the first quarter of 2019 (1Q2019). However, he also projects that these numbers will pick up in 2Q2019. Kuo believes that up to 35 million iPhones will be sold in this quarter; however, this is still less than the general consensus on the same figure.
https://www.notebookcheck.net/Things-may-get-better-for-Apple-with-its-2nd-quarter-iPhone-sales-Ming-Chi-Kuo.401226.0.html