Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: @Apple thanks for ios10 update, even the best app @telegram freezing and crashing on SE. #angry
This tweet contains emotions: 
anger, disgust