Submitted app online with employee reference. Was originally denied but showed up for a hiring event and spoke with a recruiter. Was asked to come back for the "day in the life" experience. Got a call about two weeks later for an interview. The interview was simple. Basic questions about why T-mobile and why I'm a good fit for the position. A few questions about my greatest strengths and weaknesses. How I've dealt with angry customers, messed up at a job, applied feedback from a supervisor, company policy I didn't agree with, etc. They really just want to know that you can admit when you've made a mistake, but also were able to correct it and move forward without it hindering your performance overall. Be thorough with your answers. They like details, but don't be wordy. Don't just ramble. It's also a reflection of your communication skills. Also included a brief role play: you're given a sheet of info that tells you everything you need to know about the situation. The interviewer leaves the room and calls a phone inside the room and plays the customer. For mine the customer wanted to cancel their service and had to offer a service that would be a better fit to keep them from canceling. Everything is on the sheet they give you so you don't really even have to think about it. You just need a friendly and professional tone. Sound confident and you're in.