Can Qwen 3.5 27B run on Galaxy S26 Ultra?
NO — Won't fit
Grade F · 10/100 · formula estimate
What this means
None of the versions we checked fit safely on this phone. The checked version needs about 20 GB, while we estimate that the model can use about 12 GB.
Try a smaller model, or use this model on a device with more memory.
This result is calculated from the phone and model specifications. It has not been measured on this exact phone and setup.
−8GB short
memory that doesn't exist here
20GB
needed at Q4_K_M
Q4_K_M
quant checked
F
grade · 10/100
needs 20 GBusable 12 GB · short 8 GB
Snapdragon 8 Elite Gen 516 GB RAMCPU / GPUalso sold with 12 GB
Three ways forward
1
Try a smaller quant
No quant of Qwen 3.5 27B fits this phone — even the smallest is too big. Options 2 and 3 are your real choices.
3
Run it in the cloud
The full Qwen 3.5 27B, no download, at data-center speed — pay per token.
provider recommendations coming later
Where the memory goes
| Component | Detail | GB |
|---|---|---|
| Model weights | Q4_K_M GGUF (16.7 GB) + mmap overhead | 17.5 |
| KV cache | 4K context window | 1.9 |
| Runtime | llama.cpp + app overhead | 0.6 |
| Total needed | at Q4_K_M, 4K context | 20 |
| Usable on Galaxy S26 Ultra | 16 GB RAM − Android system reserve | 12 |
| Headroom | missing — this memory doesn't exist | −8 |
Pick your quant
| Quant | Download | Verdict | Speed |
|---|---|---|---|
| Q3_K_M | 13.5 GB | ✕ Won't fit | won't fit |
| IQ4_XS | 15 GB | ✕ Won't fit | won't fit |
| Q4_0 | 15.7 GB | ✕ Won't fit | won't fit |
| Q4_K_S | 15.8 GB | ✕ Won't fit | won't fit |
| Q4_K_M | 16.7 GB | ✕ Won't fit | won't fit |
| Q5_K_M | 19.6 GB | ✕ Won't fit | won't fit |
| Q6_K | 22.5 GB | ✕ Won't fit | won't fit |
| Q8_0 | 28.6 GB | ✕ Won't fit | won't fit |
Related checks
MORE ON GALAXY S26 ULTRA
QWEN 3.5 27B ON OTHER PHONES