NEW YORK (Trefis) -- Apple (AAPL) primarily competes with Research in Motion (RIMM), Motorola (MOT) and Nokia (NOK) in the mobile phone market. According to a recent GfK survey, 59% of Apple iPhone users plan to stay with Apple for their next phone, while only 25% of smartphone users overall plan to stay loyal to their respective phones.The iPhone's reported customer loyalty levels were the highest in the survey, while Research in Motion was second at 35% (for its Blackberry OS), Google ( GOOG) Android was third at 28%, Nokia was fourth at 24% and Microsoft ( MSFT) was fifth at 21%. Loyalty remains an important factor for a company looking to gain share in the highly competitive mobile phone market. We believe strong customer stickiness and a brand image synonymous with innovation have enabled Apple to grab mobile phone market share despite heightened competitive pressure. Our price estimate for Apple is $418, roughly 25% ahead of the current market price. We estimate that iPhone operations constitute the majority of the company's stock value (54%).