The 33-year-old is Wales most capped scrum-half and ends career on 99 caps (94 for Wales and 5 for British and Irish Lions). He made his debut in 2003 and featured in three Rugby World Cup Squads (2007, 2011 and 2015) for Wales.
Phillips played 66 times for Wales since Warren Gatland took the reigns in 2007 and his career should be praised according to Gatland.
“Mike has been a huge part in Wales’ success and has been an integral part of the squad since making his debut 12 years ago,” said Gatland.
“His passion and dedication for Wales has always shone through and he ends his International career with Six Nations titles, grand slams and a Lions series win to his name and that is a great honour.
“We would like to thank Mike for his service to Wales and to wish him well for the rest of his playing career.”
