They must use Twitter. Feature available on Twitter for iOS, Android. New Delhi: Twitter on Wednesday announced it is testing voice messages in direct messages (DMs) up to 140-seconds long in India. The experiment will be rolled out in phases to the audiences, making India one of three countries to have access to the feature, alongside Brazil and Japan. According to the company, voice messages in DMs will make it easier for people to have conversations. "We're excited to bring the voice messages in DMs experiment to the country and give people a new way to express themselves and help them connect through the nuances, emotion, and empathy built by hearing someone's voice," said Manish Maheshwari, Managing Director, Twitter India.