Applied online. After a phone call with recruiter, a phone interview was scheduled. Was asked about my previous experience and some questions on Android fundamentals. Was asked about animations, how one would perform time consuming operations and how would you talk to the main thread from a handler not on a main thread.

From employee referral, contacted via email then quick 10 minute recruiter phone screening (no technical questions). Flown out for an on-site interview, accommodations arranged by the company. On-site had two stages: 1) A couple hours to make a simple Android app, given a few very loose specs/ideas to choose from. Then present the app and code to panel of Android engineers and answer questions about design decisions and Android in general. 2) Two one-on-one whiteboard coding interviews. Standard whiteboard questions similar in difficulty/depth to what one might see at an on-site Google interview. It was a fun interview. I had a great time even though I didn't get an offer.