text model · Gemma · iOS
Can I run Gemma 3 270M on iPhone 17 Pro?
Yes. Gemma 3 270M runs on iPhone 17 Pro at Q4_K_M (~1.1 GB of ~8 GB usable).
Runs at Q4_K_M using ~1.1 GB of ~8 GB usable. You have room for FP16 for higher quality.
That figure is at a 4k context and moves about ±15% as context length changes. iPhone 17 Pro leaves ~6.9 GB of headroom, room to step up to FP16 for higher quality.
- Q4_K_M needed
- ~1.1 GB
- Usable on device
- ~8 GB
- Device memory
- 12 GB
- Best quant
- Q4_K_M
Which quant fits
Running cost · estimate
- Power draw
- ~12 W
- Electricity / 1M tokens
- ~$0
- Pays for itself after
- ~2,198M tok
At ~$0.15/kWh and the estimated ~192 tok/s, a million generated tokens costs about $0 in electricity. Versus a hosted API at ~$0.5 per million tokens, the ~$1,099 iPhone 17 Pro pays for itself after roughly 2,198 million tokens, so local hardware is mostly a fixed cost, not a per-token one. TDP is the peak draw, so this is an upper bound. Assumptions.
How to run it
On iOS use Apple Foundation Models (Built into iOS 26, ~3B on-device model, zero download, fully private.).
- Parameters
- 0.27B
- Q4_K_M size
- 0.2 GB
- Q8_0 size
- 0.27 GB
- Context
- 32k
- Ollama tag
- gemma3:270m
- Memory
- 12 GB unified
- Usable for weights
- ~8 GB
- Power draw
- ~12 W
- Best runtime
- llama.cpp + Metal (via PocketPal or Off Grid app)
You could also run
Run Gemma 3 270M on other hardware
FAQ
Can iPhone 17 Pro run Gemma 3 270M?
Yes. Gemma 3 270M runs on iPhone 17 Pro at Q4_K_M (~1.1 GB of ~8 GB usable).
How much memory does Gemma 3 270M need?
iPhone 17 Pro has room to spare. At Q4_K_M the weights are ~0.2 GB; with KV cache and runtime overhead, budget ~1.1 GB at a 4k context.
What is the best tool to run Gemma 3 270M on iOS?
On iPhone and iPad, Apple Foundation Models (Built into iOS 26, ~3B on-device model, zero download, fully private.) is the standard choice. Phones realistically run 1B-4B class models. Anything larger thermally throttles or OOMs.
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Weights are measured from GGUF files; KV cache and overhead are computed, so totals can vary ~15% with context and runtime. Any tok/s is a bandwidth estimate. See methodology.