If airline travel were like health care, each pilot would be free to design his or her own preflight safety check, or not to perform one at all [2]. While the point of the charge sheet above is certainly not that healthcare should function precisely in the way that other industries do...
When an OEM creates firmware for a smartphone it does so with a specific region in mind. This may be due to language barriers, national laws, local partnerships, etc. There are many reasons for companies to create region-specific (and sometimes carrier-specific) firmware for their smartphones ...