Apple's mobile phone weather application sun beacon should be yellow or gold.
Restart the phone
To solve the problem that the sun icon is displayed in white, you can try to restart your phone. Please press and hold the power button (usually located on the side or top of the phone) until a sliding shutdown prompt appears, and then slide to shut down. Wait a few seconds, then press and hold the power button until the Apple logo appears, indicating that the phone is restarting.
Check for system updates.
If the problem persists after restarting, it is recommended that you check whether there are any system updates available. Open the settings application of your phone, find the "General" option, and then select "Software Update" to see if there are any updates available. If there is an update, it is recommended that you install the latest system update to solve possible problems.