If you have noticed your smartphone storage shrinking unexpectedly lately, a system app called AICore might be the reason. Many Android users have reported that this app can occasionally take up between 7GB and 11GB of space. That sounds like a lot for a background service, right? Well, Google recently updated its support documentation to explain that this Android’s AICore behavior with your storage usage is actually not a bug but a deliberate safety feature.
AICore powers your device’s local AI
AICore is behind many advanced features on modern flagship phones. It manages Gemini Nano, which allows your handset to handle complex tasks locally rather than sending your data to the cloud. This local processing is what enables tools like scam detection, smart replies in messaging apps, and instant audio transcriptions even when you are in airplane mode.
AI models are inherently large, even in their low-power versions. So, they naturally require several gigabytes of space to function at a minimum. However, the “storage spikes” that users are seeing happen during a specific background process: the update cycle.
The three-day fail-safe
Google explains that when AICore prepares to update to a new AI model, it temporarily keeps both the old and new versions on your device. This dual-storage period can last for up to three days.
This acts as a life-saver backup. If the new update has a bug or doesn’t load right, your phone can go back to the old version right away without having to download gigabytes of data again. Google’s support page says that once the system checks that the new model is stable, it deletes the old version and makes room for the new one (via 9to5google).
What this means for your phone
For users with 256GB of storage or more, this temporary usage is usually barely noticeable. However, 11GB represents a significant portion on devices with 128GB models.
You can technically reclaim this space by disabling AICore, of course. But sadly, doing so will turn off almost all on-device AI features, including advanced grammar checks, translation, and summarization tools. For most, the best advice is simply to let the app manage its own storage. After all, the “missing” gigabytes should return on their own within a few days.
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