On September 7, 2026, Xiaomi founder Lei Jun officially launched the first “mid-foldable” flagship phone – the Xiaomi 18 Fold at the autumn product launch event. This model was initiated two years ago and took 20 months to develop. It features a golden ratio of approximately √2:1, aiming to combine the advantages of both mid-foldable and full-foldable designs to address market challenges. The outer screen measures 5.38 inches, while the inner screen expands to 7.58 inches. Both screens support an adaptive refresh rate of 1-120Hz and 1440Hz high-frequency PWM dimming. In terms of performance, it features the company’s self-developed Xuanjie O3 chip (3nm process, ten-core architecture) and ChangXin LPDDR6 memory, with NPU computing power reaching 200TOPS. The model is available in the market starting at a price of 10,999 yuan.
ChangXinLejunXiaomiXiaomi 18 FoldXuan Jie O3小米18Fold
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On September 7, 2026, Xiaomi’s 18 Fold was officially released. Its first sale increased by 310% compared to the previous model.
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2026-09-07
Xiaomi 18 Fold was officially released.
At the launch event, Lei Jun revealed that the device was approved two years ago and took 20 months to develop. It features a golden ratio of approximately √2:1 and is Xiaomi’s most advanced smartphone.
2026-09-08
Xiaomi 18 Fold introduces a new form factor.
Reports indicate that this model adopts a new foldable screen design, aiming to break through the limitations of traditional forms. Specific technical details remain undisclosed.
2026-09-09
First-sale data was impressive, with a 310% increase.
Xiaomi 18 Fold’s first sale saw a 310% increase compared to the previous model. It was available at a starting price of 10,999 yuan. Both the outer and inner screens support an adaptive refresh rate of 1-120Hz LTPO and 1440Hz high-frequency PWM dimming.
Lei Jun, founder of Xiaomi, revealed at today’s autumn product launch that the Xiaomi 18 Fold is Xiaomi’s most advanced smartphone to date. This model was developed two years ago, taking 20 months to create, with a paper-size ratio of approximately √2:1. This design aims to combine the advantages of small and large folds to create a new “medium-fold” phone with more suitable dimensions and comfortable proportions. Lei Jun said that this ratio makes reading as natural as reading a book, watching movies without cutting, and working on documents without scaling, ensuring that content is clearly visible. Xiaomi has already launched four large-fold and two small-fold products, and plans to address market challenges through this new format.