Aido Audio LLC, an affiliate of Endpoint IP LLC, has begun that monetization firm’s sixth litigation campaign of 2019. The NPE has accused T-Mobile (4:19-cv-00384) of infringing a single patent, broadly pertaining to a computer that emulates a cellular phone and transmits a voice call through a Wi-Fi access point, through the provision of smartphones and tablets with Wi-Fi calling functionality, including the Revvl2. Aido Audio’s campaign joins litigation already underway by Aido Mobility LLC (begun in March 2019), Ryujin LLC (also in March), Remote Imaging Solutions, LLC (April), Tactus Technologies LLC (May), and Aido LLC (May as well).