I can't help but hear this post in John Linneman voice.

It kind of reminds me how first generation Pokemon could be ported forward from the 3DS versions to the later generations. It feels really cool, letting you participate in the past and then making it its own flavour of current.

Sorry to necro this. But for someone, for some reason, looking at Lemmy about this very topic: I used the Keitai 4 and I thought it was amazing. The trouble is that phone calls and texts would be silently dropped both ways too often. I'm in Canada. I'm not sure if dumbphones often have this issue -- possibly it's that only two bands had overlap. Still, something to keep in mind when importing.