Why Do I See an Exclamation Mark at the Top Left Corner of the Screen? Jose 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 (Archived) Why Is There an Exclamation Mark by the Cellular Triangle? What Does a Smaller Triangle on My Cell Bars Triangle Mean? What Do I Do Now That My Phone Is Damaged? Why Is There an Exclamation Mark by My Cell Indicator?