Simplify the following text for a Grade 12 native English-speaking person.
Original: Sony Ericsson Mobile Communications AB is a joint venture established on October 1 , 2001 by the Japanese consumer electronics company Sony Corporation and the Swedish telecommunications company Ericsson to manufacture mobile phones .
Simplified: Sony Ericsson Mobile Communications AB is a mobile phone manufacturer . The company is a joint venture that was established in 2001 by Japanese consumer electronics company Sony and the Swedish telecommunications company Ericsson .