Multiple reports say Apple plans a RAM upgrade for the iPhone 18 lineup to support the company’s most advanced on-device Siri AI features announced at WWDC. KB Securities (via DigiTimes) and other outlets report that the standard iPhone 18 is expected to move from 8GB RAM on the iPhone 17 to 12GB on iPhone 18, matching the RAM level of iPhone 17 Pro models. The upgrade is linked to Siri AI capabilities that reportedly require at least 12GB unified memory, including more expressive Siri voices and major improvements to systemwide dictation accuracy. Some reporting also suggests Apple is trying to make these advanced features available across more models, rather than limiting them to higher-end iPhones.

On the timing and lineup, sources describe a staggered release plan: Pro models in fall 2026, followed by iPhone 18 and related non-Pro models in spring 2027. Several outlets also say Apple plans to keep the iPhone 18’s starting price at $799 despite increased component costs, implying Apple would absorb higher costs rather than pass them to consumers. A separate report also cites analyst speculation that iPhone 18e and base iPhone 18 could include 9GB RAM, but the broader set of reports points to 12GB.