Told the last day before the originally scheduled on-ground interview that their people were not able to come. Did phone screen instead. Same process as mentioned by others: personal experience; teasers; what QE teams do.
Some questions are widely available online; Some question didn't quite make sense: I was asked to be specific how I would test Google, and the manager didn't come up with clear instruction on what specific product and functionality when I asked.
The manager talked in a speedy monotone, sort of sensed she wasn't in a good mood.