[Upon taking it, it's only a matter of moments and several button presses before Sans is handing it back. With a finger bone, Sans taps at the screen, indicating a small icon he'd added to the home screen.]

These things can be pretty fiddly, so if you ever need anything, all you gotta do is hit that. [He draws his hand back, sliding it back into his pocket.] It'll connect you directly to me.

[And whether that was more for Eddie's benefit or Sans', well...]

And I mean anything, kiddo. Bad dream, good dream, you wanna race some more, you need help with something. Just a click away.