Generally, iPhones come with non-expandable memory, and many Android phones allow memory expansion up to 128 GB. Android uses the Android operating system to power its phones, and the iPhone uses Apple's iOS.
Apple releases a new iPhone approximately once each year. Each iPhone that comes out runs Apple's iOS, an operating system exclusive to the iPhone and iPad. Users who want to use apps, games and music must use the Apple Store to download new items for their phones.
Android phones are generally much less expensive than iPhones. Even older, refurbished iPhones often cost hundreds of dollars. Android phones, even new models, can be obtained for free when signing a new contract with a cellphone service provider.
iPhones may load data slower than most Android models. Android gives users the opportunity to increase memory on many models, while an iPhone has a fixed amount of memory that cannot be expanded. Android also offers users a more customizable experience, allowing multiple home screens and widgets to let the phone adapt to the user's lifestyle.
Android users often change their font typefaces, interface colors and themes. Users of iPhones can only change their lock screen and home screen background, with all other superficial interface aspects remaining static.
Another difference is Guest User Mode, which is only available on Android devices. Guest User Mode allows users to lock a phone, securing all log-ins, photos and sensitive media, while allowing another person to access controlled parts of the phone. Apple devices do not support a guest mode function as of July 2015.
iPhones and Android devices also share similarities, such as their touch-focused interfaces based on direct manipulation with multiple supported gestures. These gestures include swipe, tap, pinch and reverse pinch.
The battery in all iPhones is a fixed battery, meaning that when the battery dies, it cannot be replaced easily unless taken to an expert. Many Android models have replaceable batteries, making them easy to fix at home when more frequent charges are needed.