It’s quite possible that in the near future, you’ll be able to listen to your favorite Netflix shows without running down your phone battery or having to watch the screen. Indeed, the streaming service is reportedly in the testing phase of an “audio only” mode that would allow subscribers to merely listen to Netflix content while saving their data and phone battery, potentially positioning Netflix to move into the lucrative podcast realm and take up bandwidth. The “audio only” mode test was first reported by XDA Developers (via Protocol) who spotted related code lines in Netflix’s latest …