Can Gemma 3 12B run on Galaxy S26?
YES — Runs, barely
Grade B · 58/100 · formula estimate
What this means
The checked Q4_0 version should run, but there is very little memory left for the operating system and other apps. The smaller Q2_K version is the safer choice.
Download the Q2_K version, which is about 4.8 GB. We expect it to use about 6.5 GB of the roughly 9 GB available to a model on this phone.
At the estimated speed, a roughly 300-word answer may take about 50 seconds to finish.
This result is calculated from the phone and model specifications. It has not been measured on this exact phone and setup.
5.5tokens/s
estimated · reading pace
8.7GB
needed at Q4_0
Q4_0
quant checked
B
grade · 58/100
needs 8.7 GBusable 9 GB
Snapdragon 8 Elite Gen 512 GB RAMCPU / GPU
Make it bearable
1
Drop to Q2_K (4.8 GB) — it runs comfortably here at ~8 tokens/s. Recommended over Q4_0.
2
Drop context to 2K — saves ~0.5 GB of KV cache and a little speed.
3
Close every other app before loading — the 0.3 GB headroom is real; Android may kill the app otherwise.
4
Expect throttling after ~10 min of sustained generation on a phone chassis.
See how fast it feels
Estimated at 5.5 tokens/s — reading pace. A ~300-word reply takes about 73 seconds on this phone.
Where the memory goes
| Component | Detail | GB |
|---|---|---|
| Model weights | Q4_0 GGUF (6.9 GB) + mmap overhead | 7.2 |
| KV cache | 4K context window | 0.9 |
| Runtime | llama.cpp + app overhead | 0.6 |
| Total needed | at Q4_0, 4K context | 8.7 |
| Usable on Galaxy S26 | 12 GB RAM − Android system reserve | 9 |
| Headroom | left for the OS and your other apps | 0.3 |
Pick your quant
| Quant | Download | Verdict | Speed |
|---|---|---|---|
| IQ1_S | 3.1 GB | ✓ Runs great | ~12.3 tokens/s |
| Q2_K BEST HERE | 4.8 GB | ✓ Runs great | ~8 tokens/s |
| Q3_K_M | 6 GB | ! Runs, barely | ~6.4 tokens/s |
| IQ4_XS | 6.6 GB | ! Runs, barely | ~5.8 tokens/s |
| Q4_0 | 6.9 GB | ! Runs, barely | ~5.5 tokens/s |
| Q4_K_S | 6.9 GB | ! Runs, barely | ~5.5 tokens/s |
| Q4_K_M | 7.3 GB | ✕ Won't fit | won't fit |
| Q5_K_M | 8.4 GB | ✕ Won't fit | won't fit |
| Q6_K | 9.7 GB | ✕ Won't fit | won't fit |
| Q8_0 | 12.5 GB | ✕ Won't fit | won't fit |
Get it running in 3 steps
1
Install PocketPal from the Play Store — free, no account needed.
2
Download "Gemma 3 12B Q2_K" in the in-app model hub — 4.8 GB, use Wi-Fi. Search Hugging Face for
unsloth/gemma-3-12b-it-GGUF and pick the Q2_K file.3
Set context to 4K — expect ~8 tokens/s on this phone.
Related checks
MORE ON GALAXY S26
GEMMA 3 12B ON OTHER PHONES