Why is it that when im using Bluetooth during a call on my Droid Turbo the mobile data gets disabled

[AC Question]

While on Bluetooth I cant use the internet

 

[B. Diddy]

Welcome to Android Central! Can you surf and talk at the same time without Bluetooth? Some phones (especially Verizon phones) aren't capable of simultaneous voice and data, and I think the Turbo is one of them: https://forums.motorola.com/posts/6b5822a853. If you have VoLTE, I think you can do simultaneous voice and data.