Summary
The iPhone 17 Pro Max has earned strong overall approval from Reddit, particularly among users upgrading from older models like the 12, 13, or 14 Pro Max, who notice real-world improvements in battery life, thermals, and performance under load. The consensus is that it's the best iPhone Apple has made for heavy users who need all-day or even two-day battery, with the vapor chamber cooling system earning specific praise for eliminating the overheating issues that plagued earlier Pro models. However, users upgrading from the 15 or 16 Pro Max report barely noticeable differences, and the phone's size and weight remain a genuine sticking point — this is a phone built for people who accept the bulk in exchange for maximum capability. Some early adopters have also experienced iOS 26-related bugs like camera lag and intermittent stutters, though these appear to be software-side issues rather than hardware defects.