# Can I run Gemma 3 4B on iPhone 17?

Updated: 2026-06-15

**Yes, but tight.** Fits at Q4_K_M (~3.8 GB of ~4.5 GB usable) but with little headroom, close other apps.

- Model: 4B, Q4_K_M 2.49 GB
- Device: 8 GB unified, ~4.5 GB usable for weights
- Needs ~3.8 GB at Q4_K_M; recommended quant: Q4_K_M
- Best tool on iOS: Apple Foundation Models

Estimate. Method: weights + KV cache + ~0.8GB overhead. Sources: https://ollama.com/library/gemma3, https://ollama.com/library/gemma3/tags, https://huggingface.co/bartowski/google_gemma-3-4b-it-GGUF, https://lmarena.ai/leaderboard.

More: https://localmodel.run/can-i-run/gemma-3-4b/iphone-17