"Calling emergency services is the killer app for phones" - yes.
"Calling emergency services is the killer app for smartphones" - no. "Killer app " implies that this is the reason people buy them. If this statement was true then people would buy cheap feature phones.
It's worth repeating the original statement here:
> smartphones didn't have "a" killer app per sè I don't think, but they became part of everyone's daily lives in a really short timeframe. [...]
to which alach11 replied:
> The killer app for smartphones is being a phone.
"Calling emergency services is the killer app for smartphones" - no. "Killer app " implies that this is the reason people buy them. If this statement was true then people would buy cheap feature phones.
It's worth repeating the original statement here:
> smartphones didn't have "a" killer app per sè I don't think, but they became part of everyone's daily lives in a really short timeframe. [...]
to which alach11 replied:
> The killer app for smartphones is being a phone.