Based on the given tweet, determine the level of anger the author is experiencing. Choose from the following options: 0: no anger can be inferred, 1: low amount of anger can be inferred, 2: moderate amount of anger can be inferred, 3: high amount of anger can be inferred.
Tweet: @Apple thanks for ios10 update, even the best app @telegram freezing and crashing on SE. #angry
3: high amount of anger can be inferred