Why Do I See an Exclamation Mark at the Top Left Corner of the Screen? Jose Follow Environment All Republic Wireless phones Answer The triangle with an exclamation mark is an alert symbol used by many apps. You should be able to see what the triangle with an exclamation mark stands for by accessing your quick notifications. Article Created From 1249800 Related articles How to Access Quick Notifications Why Can't I Register My Phone Number with Twitter? Why Is There an Exclamation Mark by My Cell Indicator? No Internet Access When Connected to WiFi (Archived) Why Is There an Exclamation Mark by the Cellular Triangle?