# Can I run Gemma 3 27B on iPhone 16 Pro?

Updated: 2026-06-15

**No, not enough memory.** Needs ~18.6 GB even at Q4_K_M, but only ~4.5 GB is usable.

- Model: 27B, Q4_K_M 16.55 GB
- Device: 8 GB unified, ~4.5 GB usable for weights
- Needs ~18.6 GB at Q4_K_M; recommended quant: n/a
- 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-3-27b-it-GGUF, https://lmarena.ai/leaderboard.

More: https://localmodel.run/can-i-run/gemma-3-27b/iphone-16-pro