Are there any known hardware issues on Apple Watch Ultra 2

1. Wi-Fi and Audio Problems: Users have noted difficulties with Wi-Fi connectivity, particularly when downloading content from apps like Audible. They report needing to restart the watch and reconnect to Wi-Fi multiple times. Additionally, there are audio control issues with the Podcast app, where users cannot adjust the volume or pause/play podcasts effectively[1].

2. Screen Flickering: Some users have reported a screen flickering issue, particularly when running timers in the background. This flickering stops once the timer is halted[2].

3. Battery Drain and Overheating: There are complaints about sudden battery drainage and the watch becoming excessively hot during charging. Users have had trouble completing diagnostics with Apple Support, leading to concerns about potential hardware failures[3].

4. Erratic Behavior: Reports include instances where the watch exhibits erratic behavior, such as switching between apps uncontrollably and inputting random text. This often requires the user to let the battery die or perform a hard reset[4][7].

5. Skin Reactions: Some users have experienced skin irritation or a "burning" sensation under the watch, which has led them to stop using it altogether. This issue appears to be rare, but it raises concerns about the watch's impact on skin sensitivity[6].

6. Display Issues: There are also mentions of the display appearing dim in certain lighting conditions, which some users did not experience with previous models like the Series 7[8].

These issues suggest that while the Apple Watch Ultra 2 has many advanced features, it is not without its problems, and users are encouraged to report these to Apple for potential solutions.