Even after the arrival of its in-house modems, Apple's product lines still mostly rely on Qualcomm for cellular hardware.

5 Things to Know is CNBC's Morning Squawk newsletter, a before-the-bell briefing on the most important news, trends and analysis that investors need to start their trading day. Subscribe here to ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Charlene Rhinehart is a CPA , CFE, chair of an Illinois CPA Society committee, and has a ...