How to Run FLUX.2 Klein on Your Android Phone in 2026 (Offline AI Images, No Cloud)

On this page

What FLUX.2 klein is
What you need
How fast it is depends on your chip
Make your first FLUX image
If something goes wrong
FAQ
Related guides

You can run FLUX.2 klein on your Android phone with Off Grid AI Mobile (OGAM). If your phone has 12 GB of RAM, download FLUX.2 klein 4B (Light) once, about 5.3 GB, and you can type a prompt and get a FLUX image made on your own phone, with no internet and nothing uploaded.

It’s free, the model is Apache-2.0, and there are no credits to buy.

Google Play · Download Off Grid AI · App Store

What FLUX.2 klein is

FLUX.2 klein 4B is the small FLUX model from Black Forest Labs, released in January 2026. It has 4 billion parameters and finishes an image in 4 steps, where older SDXL models need 20 or more. Black Forest Labs says it needs about 13 GB of graphics memory on a PC. OGAM runs a quantized build that fits a phone with 12 GB of RAM.

OGAM 0.0.122 (4 November 2026) added it to the Image tab. It sits next to the SDXL Light models in the same tab.

What you need

	FLUX.2 klein 4B (Light)	FLUX.2 klein 4B
Download	About 5.3 GB	About 7.1 GB
Phone RAM	12 GB or more	16 GB or more
Quantization	Q4_0	Q8_0
App	OGAM 0.0.122 or later	OGAM 0.0.122 or later

Each download includes the Qwen3 4B text encoder and the FLUX.2 VAE. The app fetches all three files together.

OGAM checks memory before it lists a model. The Light build needs about 6.4 GB to run, and an 8 GB phone has about 4.5 GB to spare, so FLUX doesn’t show on 8 GB phones at all. To check your RAM, open Android Settings, then About phone.

Phone support is new. FLUX.2 klein runs on Mac today. If it fails on yours, the SDXL Light models in the same tab are the proven choice.

How fast it is depends on your chip

Snapdragon phones run FLUX on the CPU, because Snapdragon’s graphics chip crashes on this kind of model. That’s slow. The model card says About N min per image on this phone before you download, so you know the wait first. For scale, an SDXL image run on the CPU took about 26 minutes on a OnePlus with a Snapdragon chip in our own test. On these phones the app’s picks for your phone are models built for the Snapdragon NPU instead, because they’re far faster.

Phones whose GPU can run it, such as MediaTek Dimensity phones, run FLUX on the GPU. There the card shows no wait estimate, and FLUX can be one of the picks for your phone.

Make your first FLUX image

Install OGAM from Google Play, or update it to 0.0.122 or later.
Tap Models in the bottom bar, then the Image tab.
Type FLUX in Search models.
Tap FLUX.2 klein 4B (Light) and download it. Use Wi-Fi, because it’s about 5.3 GB.
Open a chat and ask for a picture: “draw a hand-painted sign reading FRESH BREAD above a bakery window, morning light”. OGAM sees it’s an image request and sends it to your image model.
To make every message a picture, tap Chat options next to the message box and set Image to ON. Auto lets the app decide.

If you have more than one image model, choose FLUX in the model picker’s image tab before you send. FLUX draws readable lettering, so try prompts with a short word or two on a sign or a label.

The style row above the message box works with FLUX too. Tap Watercolor or Cinematic before you send, or tap Restyle under a finished picture to draw it again in another look.

Once it’s downloaded, turn on airplane mode and ask for another picture. It still works, because the prompt and the picture never leave the phone.

If something goes wrong

What you see	Why	What to do
FLUX isn’t in the list	Your phone has less than 12 GB of RAM, or the app is older than 0.0.122	Update OGAM. On an 8 GB phone, use RealVisXL v5.0 Lightning (Light) or DreamShaper XL v2 Turbo (Light)
The card says many minutes per image	Your phone is a Snapdragon, so FLUX runs on the CPU	Keep the phone on charge, or use a pick for your phone, or make images on your computer from your phone
The app stops partway through an image	The phone ran short of memory	Close other apps and use the Light build
You want to edit one of your photos	The phone app uses FLUX for text-to-image only	Edit with FLUX on a Mac

FAQ

Can FLUX.2 klein run on an Android phone? Yes, on a phone with 12 GB of RAM or more. Off Grid AI Mobile 0.0.122 added FLUX.2 klein 4B to its Image tab. It shows the model only on phones with enough memory to load it, and support on phones is new, so start with the Light build.

How big is the FLUX.2 klein download on Android? About 5.3 GB for FLUX.2 klein 4B (Light) and about 7.1 GB for the full build. Each download includes the Qwen3 text encoder and the FLUX.2 VAE, so you don’t fetch any extra files.

How long does one FLUX image take on a phone? It depends on the chip. On a Snapdragon phone Off Grid AI runs FLUX on the CPU, which is slow, and the model card tells you about how many minutes one image takes before you download. On phones whose GPU can run it, such as MediaTek Dimensity phones, it can be one of the picks for your phone.

Is FLUX.2 klein free on Android? Yes. Image generation is part of the free Off Grid AI app, and FLUX.2 klein 4B is released under Apache-2.0. There’s no account, no credits and no limit on images.

Can I edit my own photos with FLUX.2 klein on Android? Not on the phone yet. The phone app uses FLUX.2 klein for text-to-image. Editing a photo with FLUX works in Off Grid AI Desktop on a Mac.

Get Off Grid AI on Google Play and check whether FLUX.2 klein shows up for your phone.