I find that when I get a new Sim, I'll make the name anything I want, deleting the generic name that's already in place. But the next time I bring up the app, the game has reverted the name back to whatever stupid thing they had in there in the first place. This didn't happen with the first maybe 2 or 3 sims I made when starting the game, but every since then, even the babies I add don't keep the name I chose. Pretty crappy if you ask me, I hope they fix this soon, or at the very least give us an option to change the names back, since they're all names I didn't want or chose from the beginning.