View All num of num See all Photos Qualcomm www.qualcomm.com Engaged Employer Overview Reviews Salaries Interviews Jobs Photos Benefits 2.0k Reviews 12k Salaries 1.1k Interviews Follow Add Interview Follow Add Interview Interview Question RF Optimization Engineer Interview Qualcomm Unexpected question - Which is the first GSM channel used by the mobile phone? It was a fundamental question. That is why it was unexpected. Tags: See more , See less 8 Answer Add Tags Answer Interview Answer 1 Answer ▲ 0 ▼ I ask all those appying for such positions to be strong in concepts starting up from the basics. Dont ignore the basics. Sometimes, basic questions can seem difficult. Interview Candidate on Feb 16, 2013 Interviews > RF Optimization Engineer > Qualcomm Add Answers or Comments To comment on this, Sign In or Sign Up.