I started running Splintered State last weekend.
I completely skipped over the intro section; it felt contrived and a little rail-roady, but YMMV.
I just had one of the runners with a contact that had decent connections to contact the runners for the initial B&E job. Once they get the item they're looking for (as well as the second item), they get their money.
I didn't have to worry too much about getting them hooked for the next phase of the run. However, if no one seems curious about the second commlink, play it up. Maybe have Mr. Johnson mention that he can't access the commlink and that it has some pretty hefty encryption. Hey, it might have some good paydata on it!
My team didn't need any nudging, fortunately...they dove right in. They didn't contact any of their contacts (unfortunately), but just tried to break the encryption on their own. Make sure you keep track of what the group does here, because it will determine who and what they will be dealing with in the coming scenes.
If they get the fragmented data off of the commlink, play up the paranoia. This is serious drek that they find, and if you have any Metahumans in the group, make sure they notice the connections to Alamos 20k and Humanis...that should motivate them.
Once the comm's owner contacts them, again play up the paranoia. If the owner of the device was able to realize that someone has his commlink, then who else could know? Once that little bit about how much the owner is willing to pay comes into play, then the group should really worry.
That's as far as I've gotten with my group right now. I tried to make this post as spoiler-free as possible. Hopefully, it will help.