How much RAM could the iPhone 18 get?The biggest question surrounding the iPhone 18’s memory is whether Apple will make the jump from 8GB to 12GB or take a smaller step to 9GB. Jeff Pu’s latest research note points to 12GB for the standard iPhone 18, matching the memory capacity reportedly used by the iPhone 17 Pro lineup.That would be a 50% upgrade from the base model that we are used to now. Analyst Ming-Chi Kuo has previously stated that both the iPhone 18 and iPhone 18e would include 9GB of RAM. Early reports by both analyst Dan Nystedt and KB Securities suggested that we could even see a 12GB version of the iPhone 18, and the final RAM configuration still isn't set in stone.Why Apple may need more memory for AIThe likely reason for the RAM increase is Apple’s expanding artificial-intelligence ambitions. Apple has indicated that some of its more advanced on-device AI capabilities require at least 12GB of unified memory. That includes more sophisticated Siri functions and improvements to systemwide dictation. The current standard iPhone 17, with 8GB, reportedly cannot access those capabilities. Giving the iPhone 18 12GB would therefore allow Apple to bring more demanding AI features to a broader section of its customer base rather than reserving them for Pro-class devices. Analysts have linked the planned memory increase directly to the growing demands of Apple Intelligence and future on-device models.How the RAM upgrade could change SiriA larger memory pool could make the iPhone 18 better equipped to handle AI processing directly on the device. Apple’s more advanced Siri capabilities are expected to rely on larger on-device models, which require additional memory to operate effectively. According to reporting based on Apple’s WWDC announcements, features including more expressive Siri voices and major improvements to speech-to-text require 12GB of unified memory. That means a 12GB iPhone 18 could potentially avoid the feature restrictions facing the 8GB iPhone 17. If Apple instead chooses 9GB, some advanced AI functions could remain unavailable, as Kuo has previously indicated that the 9GB models may not support certain iOS 27 intelligence features.Why Apple could prefer 12GB across more modelsMoving the standard iPhone to 12GB would also help Apple create greater consistency across its lineup as AI becomes more central to the iPhone experience. KB Securities previously predicted that the entire iPhone 18 family could receive 12GB of RAM, arguing that the additional memory would help Apple expand access to its AI features. Such a move could reduce the distinction between standard and Pro models based purely on AI capability. Apple could also benefit from having more memory headroom for future versions of iOS and increasingly demanding AI models. The strategy would make the base iPhone 18 more future-proof while encouraging customers to adopt Apple’s expanding on-device intelligence features.How memory shortages could complicate the upgradeThere is, however, a major obstacle: memory is becoming more expensive as demand from artificial-intelligence data centers increases. Reports indicate that RAM and other memory components are facing supply pressure, potentially making a large upgrade more costly for smartphone manufacturers. That creates a difficult calculation for Apple. A 12GB configuration would support its AI ambitions, but it could also raise manufacturing costs at a time when memory prices are already elevated. KB Securities has suggested Apple may absorb some of those additional costs by negotiating supply with major memory manufacturers. Other analysts, meanwhile, have warned that rising component costs could eventually contribute to higher iPhone prices.