The Huawei Watch Ultimate features a satellite SMS capability that allows users to send and receive messages via satellite when they are outside of cellular coverage. This technology is based on the Beidou satellite system, which is China's indigenous satellite navigation system. Here's how it works:
1. Activation: The satellite SMS feature can be activated using the "Beidou Key," an auxiliary button located at the 10 o'clock position on the watch. Users can long press this button to quickly activate the Beidou satellite information function, enabling them to send help messages in critical situations[7][11].
2. Signal Transmission: Huawei has developed innovative technologies to miniaturize RF modules and integrate a suspended antenna design into the watch. This allows for efficient signal transmission despite the watch's compact size. Additionally, the ceramic metallization process helps to enhance signal strength by effectively converging energy[7].
3. Battery Management: To address the high power requirements for satellite communication, Huawei has implemented a battery intelligent heating solution. This ensures that the watch can maintain sufficient power output even in low-temperature environments, which is crucial for reliable satellite connectivity[7].
4. Software Update: To enable the satellite SMS feature, users need to update their watch to the latest HarmonyOS version and install a dedicated Beidou Satellite SMS app. This app allows users to send and receive satellite SMS directly from the watch[3].
5. Functionality: The Huawei Watch Ultimate supports two-way satellite SMS communication, allowing users not only to send but also to receive messages via satellite. This capability is particularly useful in emergency situations or when traveling to remote areas without cellular coverage[9][11].
6. Operational Limitations: While the satellite SMS feature provides critical connectivity, it may have limitations such as slower message delivery times compared to traditional cellular networks. Users should be patient and ensure they have a clear view of the sky for optimal signal strength[2][5].
Overall, the satellite SMS feature on the Huawei Watch Ultimate represents a significant advancement in wearable technology, offering users a reliable means of communication in areas without traditional network coverage.
Citations:
[1] https://technode.com/2023/03/15/huawei-to-launch-satellite-connected-smartwatch/
[2] https://globalsatellite.us/global-satellite-knowledge/sending-a-text-message/
[3] https://www.huaweicentral.com/huawei-watch-ultimate-satellite-sms-feature-update/
[4] https://celest-watches.com/tag/huawei-watch-ultimate/
[5] https://www.fixmymobile.com.au/blog/understanding-satellite-connectivity-in-smartphones
[6] https://consumer.huawei.com/en/support/content/en-us15958510/
[7] https://www.vopmart.com/blog/post/Huawei-Watch-Ultimate-Review
[8] https://www.techtarget.com/whatis/feature/How-to-use-iOS-18-satellite-messaging
[9] https://www.huaweicentral.com/huawei-certifies-watch-ultimate-2-with-uwb-and-satellite-sms-support/
[10] https://support.apple.com/guide/iphone/text-via-satellite-iphb9262f4dd/ios
[11] https://www.phonearena.com/reviews/huawei-watch-ultimate-review_id5760