text model · Granite · iOS

Can I run Granite 3.1 2B on iPhone 17?

Compatibility verdict VRAM threshold engine

Yes, it runs usable speed ~22 tok/s est.

Yes. Granite 3.1 2B runs on iPhone 17 at Q4_K_M (~2.8 GB of ~4.5 GB usable).

Needs ~2.8 GB Device usable ~4.5 GB

Runs at Q4_K_M using ~2.8 GB of ~4.5 GB usable. You have room for Q8_0 for higher quality.

That figure is at a 4k context and moves about ±15% as context length changes. iPhone 17 leaves ~1.7 GB of headroom, room to step up to Q8_0 for higher quality.

Q4_K_M needed: ~2.8 GB
Usable on device: ~4.5 GB
Device memory: 8 GB
Best quant: Q4_K_M

Share on X Share on Reddit

Which quant fits

Quant ladder vs ~4.5 GB usable

Q2_K

~2.3 GB

Q3_K_M

~2.4 GB

Q4_K_M

~2.8 GB

Q5_K_M

~3 GB

Q6_K

~3.3 GB

Q8_0

~3.9 GB

FP16

~6.3 GB

The line marks iPhone 17's ~4.5 GB budget; rungs past it are too large.

How to run it

On iOS use Apple Foundation Models (Built into iOS 26, ~3B on-device model, zero download, fully private.).

Model Granite

Parameters: 2.53B
Q4_K_M size: 1.55 GB
Q8_0 size: 2.69 GB
Context: 128k
Ollama tag: granite3.1-dense:2b

Full Granite 3.1 2B requirements →

Device iOS

Memory: 8 GB unified
Usable for weights: ~4.5 GB
Best runtime: llama.cpp + Metal (via PocketPal or Off Grid app)

Best models for iPhone 17 →

You could also run

Run Granite 3.1 2B on other hardware

Apple M1 (8GB)8GB RAM Laptop (CPU/iGPU only)iPhone 15 Pro iPhone 16 iPhone 16 Pro Generic Android Phone (8GB RAM)

FAQ

Can iPhone 17 run Granite 3.1 2B?

Yes. Granite 3.1 2B runs on iPhone 17 at Q4_K_M (~2.8 GB of ~4.5 GB usable).

How much memory does Granite 3.1 2B need?

iPhone 17 has room to spare. At Q4_K_M the weights are ~1.55 GB; with KV cache and runtime overhead, budget ~2.8 GB at a 4k context.

What is the best tool to run Granite 3.1 2B 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.

Embed this

A live badge for your model card or README, updated as the data is.

Markdown

[![Granite 3.1 2B on iPhone 17](https://localmodel.run/badge/granite-3.1-2b/iphone-17.svg)](https://localmodel.run/can-i-run/granite-3.1-2b/iphone-17)

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.