Well the standard definition of a smartphone was a phone that was expandable by installing 3rd party applications. However, even 'dumbphones' can do that now, and the original iPhone couldn't, but was still considered a smartphone. Multitasking of ALL applications was another thing that set the smartphones from the dumbphones, but the iPhone can't do that, yet is still considered a smartphone. I guess the best way to describe a smartphone is a device that covers a range of additional functions other than basic calling and texting, but that category is now so broad that that would make practically every phone out there a smartphone. I think the term smartphone is now quite outdated, and we should consider all devices as just mobile phones.