notification on white background

white updatealert update systemupdate system smartphonemessage smartphoneapp servicealert service representing reminderservice remindermessage reminder prompt phonealert notificationsystem notificationservice notificationmessage notificationiconapp notificationicon notificationbell notificationalert notification messageservice messages messagealert message isolated icon communicationtools communication background apps appnotification appmessage alertsystem alerts alertnotification alert