When choosing a mobile device for business, there are several factors to consider, including security and platform updates, separating personal and work apps, and the type of device environment (BYOD, CYOD, or company-owned). Apple's iOS devices offer a long lifecycle, easy deployment through the Device Enrollment Program, and remote management features, but require purchasing from authorized resellers and have limited flexibility for personally-owned devices. Android Enterprise offers similar benefits, with easier management of personally-owned devices and clearer separation between work and personal use, but can be riskier due to device variations from lesser-known manufacturers. Windows Phone is not a recommended choice due to the uncertain future of the platform. Ultimately, the decision between iOS and Android may come down to opinion, but combining the best features of both platforms can also be an option.