Please analyze the tweet "@rgam0rtis it's a common problem I've had with every 6 plus. having a regular 6 = not having to worry about the design flaw = working phone" and classify its emotional content. Choose from the following emotions: anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust. If no emotions are detected, respond with "neutral or no emotion".
optimism, sadness