text model · Gemma · iOS
Can I run Gemma 4 E2B on iPhone 16?
Yes. Gemma 4 E2B runs on iPhone 16 at Q4_K_M (~4.4 GB of ~4.5 GB usable).
Fits at Q4_K_M (~4.4 GB of ~4.5 GB usable) but with little headroom. Close background apps, and expect slow generation on a phone.
That figure is at a 4k context and moves about ±15% as context length changes. iPhone 16 leaves ~0.1 GB of headroom.
- Q4_K_M needed
- ~4.4 GB
- Usable on device
- ~4.5 GB
- Device memory
- 8 GB
- Best quant
- Q4_K_M
Which quant fits
Running cost · estimate
- Power draw
- ~11 W
- Electricity / 1M tokens
- ~$0.05
- Pays for itself after
- ~1,776M tok
At ~$0.15/kWh and the estimated ~10 tok/s, a million generated tokens costs about $0.05 in electricity. Versus a hosted API at ~$0.5 per million tokens, the ~$799 iPhone 16 pays for itself after roughly 1,776 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
- 5.1B
- Q4_K_M size
- 3.11 GB
- Q8_0 size
- 5.05 GB
- Context
- 128k
- Ollama tag
- gemma4:e2b
- Memory
- 8 GB unified
- Usable for weights
- ~4.5 GB
- Power draw
- ~11 W
- Best runtime
- llama.cpp + Metal (via PocketPal or Off Grid app)
You could also run
Run Gemma 4 E2B on other hardware
FAQ
Can iPhone 16 run Gemma 4 E2B?
Yes. Gemma 4 E2B runs on iPhone 16 at Q4_K_M (~4.4 GB of ~4.5 GB usable).
How much memory does Gemma 4 E2B need?
It is a tight fit on iPhone 16. At Q4_K_M the weights are ~3.11 GB; with KV cache and runtime overhead, budget ~4.4 GB at a 4k context.
What is the best tool to run Gemma 4 E2B 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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A live badge for your model card or README, updated as the data is. [](https://localmodel.run/can-i-run/gemma-4-e2b/iphone-16) Sources
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.