They do indeed. but their argument was/is that their CDMA licenses made it so that your phone/tablet/etc design was feasible at all. ARM could make this claim

They do indeed. but their argument was/is that their CDMA licenses made it so that your phone/tablet/etc design was feasible at all. ARM could make this claim too but in ARM's case, it doesn't have standard-essential patents required for network interoperability. That's the bit that pissed Apple off so much that they ordered their suppliers to stop paying the royalties.