Jan 30 (Reuters) - Apple is prioritizing production and shipment of its three highest-end iPhone models for 2026 while ​delaying the rollout of its standard model due to ‌a marketing strategy shift and supply-chain constraints, Nikkei Asia reported on Friday, citing ‌four people with knowledge of the matter. Apple did not immediately respond to a Reuters' request for comment outside regular business hours. "Supply chain smoothness is one of the key ⁠challenges for this year, and the ​marketing strategy change also played a part ​in the decision (to prioritize premium models)," an executive at an iPhone supplier with direct knowledge of the ‍plan told Nikkei ⁠Asia. Apple on Thursday beat Wall Street estimates for quarterly revenue, driven by strong iPhone demand and a sharp rebound ⁠in China, with CEO Tim Cook telling Reuters that demand for the latest ‌handsets was "staggering." (Reporting by Bipasha Dey in Bengaluru; Editing by ‌Sonia Cheema and Mrigank Dhaniwala)