Can Gemma 3 12B run on Motorola Razr Ultra (2025)?
YES — Runs, barely
Grade A · 73/100 · formula estimate
What this means
The checked Q4_K_M version should run, but replies are likely to arrive slowly. The smaller IQ1_S version is the safer choice.
Download the IQ1_S version, which is about 3.1 GB. We expect it to use about 4.7 GB of the roughly 12 GB available to a model on this phone.
At the estimated speed, a roughly 300-word answer may take about 36 seconds to finish.
This result is calculated from the phone and model specifications. It has not been measured on this exact phone and setup.
4.7tokens/s
estimated · reading pace
9.1GB
needed at Q4_K_M
Q4_K_M
quant checked
A
grade · 73/100
needs 9.1 GBusable 12 GB
Snapdragon 8 Elite16 GB RAMCPU / GPU
Make it bearable
1
Drop to IQ1_S (3.1 GB) — it runs comfortably here at ~11.1 tokens/s. Recommended over Q4_K_M.
2
Drop context to 2K — saves ~0.5 GB of KV cache and a little speed.
3
Close every other app before loading — the 2.9 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 4.7 tokens/s — reading pace. A ~300-word reply takes about 85 seconds on this phone.
Where the memory goes
| Component | Detail | GB |
|---|---|---|
| Model weights | Q4_K_M GGUF (7.3 GB) + mmap overhead | 7.7 |
| KV cache | 4K context window | 0.9 |
| Runtime | llama.cpp + app overhead | 0.6 |
| Total needed | at Q4_K_M, 4K context | 9.1 |
| Usable on Motorola Razr Ultra (2025) | 16 GB RAM − Android system reserve | 12 |
| Headroom | left for the OS and your other apps | 2.9 |
Pick your quant
| Quant | Download | Verdict | Speed |
|---|---|---|---|
| IQ1_S BEST HERE | 3.1 GB | ✓ Runs great | ~11.1 tokens/s |
| Q2_K | 4.8 GB | ! Runs, barely | ~7.2 tokens/s |
| Q3_K_M | 6 GB | ! Runs, barely | ~5.8 tokens/s |
| IQ4_XS | 6.6 GB | ! Runs, barely | ~5.2 tokens/s |
| Q4_0 | 6.9 GB | ! Runs, barely | ~5 tokens/s |
| Q4_K_S | 6.9 GB | ! Runs, barely | ~5 tokens/s |
| Q4_K_M | 7.3 GB | ! Runs, barely | ~4.7 tokens/s |
| Q5_K_M | 8.4 GB | ! Runs, barely | ~4.1 tokens/s |
| Q6_K | 9.7 GB | ! Runs, barely | ~3.6 tokens/s |
| 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 IQ1_S" in the in-app model hub — 3.1 GB, use Wi-Fi. Search Hugging Face for
unsloth/gemma-3-12b-it-GGUF and pick the IQ1_S file.3
Set context to 4K — expect ~11.1 tokens/s on this phone.
Related checks
MORE ON MOTOROLA RAZR ULTRA (2025)
GEMMA 3 12B ON OTHER PHONES