The whole process took 3+ months. I applied online on their career page and within 15 days got an email to set up technical interview. It extended beyond the scheduled time for 1 hour but went well. Alot of questions from the resume like projects in detail, experience were asked. Other questions like working of LTE, MIB, SIB blocks were asked. After a month and a half I got an email for the second round of onsite interview to San Diego. Onsite interview consisted of 5 back to back rounds with 1 HR and 4 technical. They were pretty much focussed on thorough and detailed understanding of LTE/ wireless working. They actually expect you to know over and above what you can gather online or through your courses which is basically stupid. Anyways, be ready to answer and show your technical projects and technical experience in detail.