Regarding the success of mobile devices, the right combination of application processor (AP) and cellular modem is getting important more and more. For OEM vendors, two types of solutions are available today:  a dual-chip solution with discrete AP and modem components or a single-chip solution with the AP and modem integrated together into a single chip. To date, the concept that a single-chip solution is more cost effective and competitive than a dual-chip solution has been the industry norm. This paper offers a competitive analysis of single-chip vs. dual-chip solutions by revealing the high-performance/low-power advantages for smartphone and tablet designs.