Abstract: A semiconductor chip for use in a mobile telephone which includes a text to speech (TTS) system, a method of aurally presenting a notification or text message from a mobile telephone and a mobile telephone Mobile telephones are increasingly being developed with additional functions. These include the ability to play music, access the internet and/or play game. When one of these functions is being operated on the mobile telephone, a user may not be aware of the indicators alerting the user to the fact that there is an incoming telephone call or text message. It is envisaged that mobile telephones could be provided with text to speech TTS systems. The text which is converted by the TTS system may be an indicator of the incoming call or text message itself. The present invention is directed towards a mobile telephone in combination with a TTS system which will alleviate the problems associated with a user not being aware of the indicators or notifications that there is an incoming call or text message.