Recently, the news about Xiaomi's self-developed chip has sparked heated discussions online, especially the action of Arm's official website publishing related articles and then deleting them, which has caused many netizens to question and discuss Xiaomi's chip. In response to these questions, Xiaomi released a statement on the evening of May 26.

Is it true that the rumored XuanRing O1 is a custom chip from Arm?

To start with the conclusion: no. This is entirely a rumor. The XuanRing O1 is not a custom chip from Arm. During the development process, the Arm CSS service was not used.

The XuanRing O1 is a 3nm flagship SoC independently designed by Xiaomi's XuanRing team over more than four years. It is based on the latest CPU and GPU standard IP authorization from Arm, but the multi-core and memory system-level design and the backend physical implementation were fully completed by the XuanRing team. It is not true that they adopted Arm's complete solution as rumored, and the claim of "customizing chips from Arm" is an unfounded fallacy.

The CPU super core of the Xiaomi XuanRing O1 can reach a maximum frequency of 3.9GHz, far exceeding the industry standard design. Such achievements are the result of numerous innovations by the XuanRing team and hundreds of iterations and optimizations. For example, the XuanRing O1 redesigned more than 480 types of standard cell libraries in the CPU section, which is almost one-third of the total number of 3nm standard cell libraries. Additionally, edge power supply technology and self-developed high-speed registers were innovatively used; these incremental innovations ultimately enabled the challenging 3.9GHz design goal to be achieved.

Currently, several professional media outlets have conducted detailed tests on the XuanRing O1, showing that both the CPU and GPU have reached the first-tier performance and power consumption levels. Of course, this is Xiaomi's first flagship SoC, so there are still areas for improvement. Xiaomi will continue to strive unreservedly on the path of chip development, whether for five, ten, or twenty years.

Will the Xiaomi 15S Pro, which uses an external modem, have a different experience or poor battery life?

With the XuanRing O1 paired with an external modem, the uplink and downlink experiences of the Xiaomi 15S Pro in real network environments are basically consistent with those of other mainstream flagship phones, and it also supports 5G A.

In terms of battery life, thanks to the high energy efficiency on the AP side, in Xiaomi's internal battery life model test, the DOU of the Xiaomi 15S Pro is 1.47 days, which is very close to the 1.50 days of the 15 Pro. In third-party media battery life tests, the two devices' results are also relatively close. In daily use, there is almost no noticeable difference in battery life. Of course, if you continuously use the 5G network, the external modem does have a slight impact on battery life.

On the road of baseband development, Xiaomi still has a long way to go. Currently, the XuanRing T1 chip released by Xiaomi integrates a complete independent 4G baseband within. This chip is not only equipped on the Xiaomi Watch S4 15th Anniversary Edition but was previously also mounted on the Redmi Watch 5 eSIM version.

Does the Xiaomi 15S Pro support always-on display?

Yes, it supports always-on display. Customized always-on display clock, personalized signature settings, and full-screen AOD (Always-On Display) are supported, maintaining consistency with the lock screen style. However, considering the impact of always-on display on power consumption, currently, it defaults to displaying for 10 seconds and intelligent display when gazing.

Could anyone unlock my vehicle if I lose my Xiaomi 15S Pro with UWB car key?

The Xiaomi 15S Pro with UWB capability is a more intelligent mobile car key for Xiaomi YU7. If you lose your phone, make sure to log into the Xiaomi Car App immediately using a backup phone and create a new key to invalidate the old one. If you are a shared user, you can also notify the owner to cancel driving permissions to ensure vehicle safety. Additionally, you can remotely locate the lost phone via Xiaomi Cloud services to help retrieve it.

The Xiaomi 15S Pro official website mentions "motion sickness relief," what is it? How do I enable it?

Yes, the Xiaomi 15S Pro indeed adds a motion sickness relief mode, which can alleviate motion sickness through visual compensation. When traveling in a vehicle, the built-in high-precision sensors, based on accelerometer and gyroscope data, display dot prompts on either side of the phone screen to indicate motion status during vehicle movement, establishing a motion inertia reference, and alleviating motion sickness through visual compensation.

How to enable: Settings - Privacy & Security - Safety - Motion Sickness Relief

Why can't I find the night mode in the Xiaomi 15S Pro camera app?

When the Xiaomi 15 Ultra was launched, Xiaomi initiated a camera app simplification plan, merging some functions that originally required manual activation into default photography. Night mode is one of them.

When shooting with the rear camera, the camera automatically identifies the shooting scene based on the current environment. When a low-light scene is identified, the camera preview screen will display a night scene icon and automatically trigger the night mode, remembering the effectiveness of the night mode. If you need to turn it off, click the night scene icon in the camera preview screen while the automatic night mode is active to exit it.

At the same time, some functions have been merged and moved to more suitable tabs. For example, the original "Director Mode" video recording function has been merged into "Professional Mode." If you need to use the multi-device connection feature, you can slide down and select "Multi-Device Connection" in the "Professional Mode" interface to connect to cameras or monitors.

The original "Pre-set Professional Mode" photography function has been merged into "Professional Mode." You can view the pre-set templates by clicking the camera icon in the bottom right corner of the "Professional Mode" interface.

Why does the preview screen of the professional mode on the Xiaomi 15S Pro show red stripes in bright areas?

The red stripes seen in the bright areas under the professional mode are a "UI prompt" indicating that the corresponding area in the current shot is too bright and may be overexposed. These stripes will not appear in the final image. Cameras display red or blue stripes in the preview based on the light conditions in the shot to alert creators to overexposed or underexposed areas, a common professional feature in various professional photography equipment today. If you are not accustomed to using this feature, you can disable it through "Camera Settings - General - Professional Parameter Display - Exposure Feedback."

Original Source: https://www.toutiao.com/article/7508752782598406675/

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