Mobile App Default to Phone Screen?

It looks like RingCentral is forcing the new mobile app on us but we are having some trouble making the switch. Every time you open the app it defaults to the Glip screen which shows a sort of "news feed" of messages but does not include recent calls/missed calls. We don't use Glip at all in our company and just need the app to default to the Phone screen instead. Is there any way to make this happen?