Training an ImageNet classifier on an Android phone: 4.59% accuracy but it works

Tall_Abrocoma_3533 · reddit · 2026-08-07

A Reddit user shares experiment training an ImageNet-1k classifier entirely on an Android phone. The model is an MLP with 500K params, trained on 32x32 downscaled data for 5 epochs, achieving 4.59% validation accuracy. Training took 30 min using PyTorch and pyarrow in Termux on a Dimensity 9300+ CPU. Author may improve later.

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