In the US you either had unlimited SMS or no SMS plan at all, in which case you got charged for every single message, sent or received. But I remember having unlimited SMS as early as 2003.
If you had no SMS at all then you certainly didn’t have a data plan, which ruled out WhatsApp entirely.
That’s easy: unlimited SMS was common on most mobile plans in the US as early as the mid-2000s. Unlike the rest of the world, Americans had no financial incentive to use WhatsApp.
New AAA games suck.
I either play indies or old AAA games. It all went to shit around the beginning of the PS4/X1 era, so yeah, my upper bound is about 2013.