Mobile phones are generally designed for the mass market, not for specific user demographics. The over 65s are a growing user group that is seldom accommodated by modern design. The side-effect is that senior mobile phone users, with their special needs, are left behind, unable to gain the full benefit of owning these devices. The literature suggests that the design of the interface is at fault so we designed and evaluated a prototype “senior” mobile phone, which does attempt to meet the needs of this demographic. We report on our evaluation and suggest directions for future work.