Mobile phones are wiped of data, physically repaired, repackaged with new instructions and sent to suppliers. According to Groupe Speciale Mobile Association (2012), some refurbishing companies have sought environmental accreditation for proper management of the entire process. For a mobile network operator choosing a recycling partner, assurances that a partner operates good practices and, with transparency in the way they work are important. For responsible partnering companies, environmental management systems are often used to provide assurance about the proper treatment of collected phones. Collected phones must first be evaluated to determine those that are most likely to be suitable for reuse. These phones will then be subjected to a series of tests to determine suitability for reuse with or without further repair.