Sprint to begin sales of Pixel 3 and Pixel 3a devices in The Wall A group blog by The Wall Editors Posted May 20, 2019 On 5/17/2019 at 10:31 AM, bholden said: Does your unlocked 3a support Sprint wifi calling? Thanks for any info regarding this. Yup. I enabled it under settings. Hopefully VoLTE follows soon, but with the merger pending, I just hope things keep momentum for service features and investment.