Google finally explains why Android AICore keeps eating your storage — and it actually makes a lot of sense
Publish Date: 2026-05-03 05:03:00
Source Domain: www.digitaltrends.com
If you’ve ever glanced at your Android phone’s storage breakdown and done a double-take at how much space AICore is consuming, you’re not alone. It’s one of those things that’s easy to notice and hard to explain, and for a while, Google wasn’t offering much clarity on it. That’s changed now, and the explanation turns out to be more sensible than the mystery surrounding it suggested.
AICore is the on-device AI backbone that powers a growing list of features on Android 14 and above — smart replies in WhatsApp, scam detection in messages, real-time transcription, grammar correction, audio summarization, and more. It runs Gemini Nano locally on supported hardware, which means your data stays on your device, the features work without an internet connection, and there’s no latency from bouncing a request off a remote server. The trade-off, as anyone who’s installed a multi-gigabyte model knows, is storage.
The storage spike has a simple explanation
Google has now published a support article addressing the one thing that confused people most: why AICore’s storage footprint sometimes balloons unexpectedly. The answer is that when a new version of Gemini Nano becomes available, AICore holds both the old and the new versions simultaneously for up to 3 days before clearing the original version.
It’s a precautionary measure. If the new model version encounters problems after installation, your phone can instantly revert to the previous version rather than re-download gigabytes of model data from scratch. It’s the kind of sensible engineering decision that’s obvious in hindsight, but Google probably should have communicated it sooner, given how much confusion it’s caused.
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