In recent years, smartphones have become the main products sold in the mobile phone market, and sales of feature phones (non-smartphones) have fallen sharply. A mobile phone manufacturer predicts that "smartphones will soon completely replace feature phones. ". Which of the following, if true, could contradict the prediction of the phone maker? ['In addition to calling, texting, and other functions, smartphones are also convenient for surfing the Internet, and are loved by consumers.', 'Many elderly people will only use feature phones, and mobile phones are an essential communication tool in their lives.', 'With fewer and fewer people buying non-smartphones, no manufacturer is willing to reproduce non-smartphones.', 'Smartphones provide many conveniences for work and entertainment, more and more people choose to buy smartphones.']