Product Signal

Xiaomi Launches Its O3 Flagship Chip

Xiaomi has released its second high-end flagship SoC, O3. Reports say it uses a 3nm process, has 24 billion transistors and is planned to debut in the Xiaomi 18 Fold, advancing the company's in-house chip program beyond O1.

By All We Need Editorial System

Xiaomi has released its in-house O3 flagship mobile processor. Reuters reports that the chip is intended for 3nm production and is planned to debut in the Xiaomi 18 Fold in September, while Sina Tech reports that Xiaomi presented O3 as its second high-end flagship SoC. This is not merely a chip demonstration: it moves Xiaomi's flagship silicon effort into a second product-generation cycle.

A second flagship silicon generation

Bloomberg reports that Xiaomi has launched a mobile processor for marquee devices, entering a component category long supplied to the company by Qualcomm and MediaTek. Sina Tech reports that O3 is Xiaomi's second high-end flagship SoC, built on 3nm with 24 billion transistors and planned for the Xiaomi 18 Fold. Reuters also reports the O3 launch and says sources expect it to be used in a flagship foldable. The program has therefore moved from first-product validation into next-generation flagship integration.

The mechanism is device-level integration

The strategic value of a flagship SoC is not limited to a benchmark result. An in-house platform can allow deeper integration across imaging, on-device AI, power management, thermals and operating-system scheduling, while reducing dependence on an outside vendor's product timetable. Xiaomi previously confirmed that O1, its first flagship processor, used second-generation 3nm technology, 19 billion transistors and a 44-TOPS six-core NPU. O3 indicates ongoing investment in that design capability rather than a one-off experiment.

Scale determines whether substitution follows

Reuters, citing sources, says O3 is targeted for 200,000 to 300,000 units, though Xiaomi and TSMC have not publicly confirmed the production and volume details. More importantly, Qualcomm said in 2025 that its multiyear agreement with Xiaomi would keep Snapdragon 8 platforms in multiple generations of Xiaomi premium phones, with annual volumes growing. O3 is thus more likely to expand Xiaomi's product optionality first than to immediately displace Qualcomm materially.

What to watch next

The next observable evidence will be whether Xiaomi 18 Fold launches with O3 as planned; whether Xiaomi or TSMC confirms process and volume production; and how the chip performs in power, imaging, on-device AI and yield. Expansion from one foldable to multiple premium models, together with shipment and developer-support data, would strengthen the case for a scalable Xiaomi flagship platform. Limited deployment would weaken it.

Sources