The Signal Bar or Clock Doesn’t Show
When you’re using your iPhone, you’ve probably noticed how you can see your clock and signal’s strength in the top left and top right corners, respectively.
While this works most of the time, iOS 17 has a small bug that doesn’t show either one of these two things at random.
What’s worked for us is locking your iPhone and then unlocking it again or opening the Notification Center and then closing it again.
If the issue persists, restarting your iPhone should do the trick.