When the band is connected to an iPhone, except for the application icons preset on the band, all other notifications use the default icons, and the APP does not push the application icon to the band.
The following application icons are preset: Messages, LINE, WhatsApp, Twitter, YouTube, Instagram, and Twitch.
The band notification icon supports dynamic caching of 20 icons. If the 21st notification is received when 20 icons are cached, the band will delete the application icon that has not received the notification for the longest time and cache the new icon when it needs to request the icon. At this time, if you receive a notification with the deleted icon again, you need to request the icon again. Therefore, if there are many APPs on the phone and notifications are pushed regularly, you will observe that when the band notification is displayed, the default icon is displayed on the reminder interface, and then the corresponding application icon is displayed in the notification center. You can choose to turn off uncommon notifications.