Yes, Intel does make SoCs for smartphones, although it hasn't had as many design wins in phones as it has in tablets. Here's a few phones running Intel SoCs:
Asus ZenFone 2 (Intel Atom Z3580 or Z3560)
Asus ZenFone Zoom (Intel Atom Z3580)
Asus ZenFone 4, 5, 6
Lenovo P90 (Intel Atom Z3560)
Motorola RAZR* i
Intel also makes 4G/LTE modems.
Intel's current strategy is heavily focused on the Asian market, so we probably won't see many phones with Intel inside here in North America in the short term.
- Matt