Nokia 5110 is a Nokia GSM mobile phone model. It was released in 1998. At one point it was said to be the most popular mobile telephone in the world. The consumer oriented 5110 shared the same platform as the Nokia 6110 targeted at the business market. It had a simpler user interface and lacked the infra-red port. Although considered bulky by today's ultra-slim standards, the Nokia 5110 (also known as the Nokia 5146 on One2One (now T-Mobile), or nk402 on Orange in the UK) was rugged, had excellent battery life and was one of the first phones to feature the game