Task: Evaluate the tweet for emotional cues and classify it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that indicate the tweeter's state of mind.
Tweet: @Apple thanks for ios10 update, even the best app @telegram freezing and crashing on SE.
This tweet contains emotions: 
anger, disgust, joy, optimism