No internet while on a phone call!

On Sprint you have to enable Calling Plus to enable calling over LTE so that you can use voice and data at the same time. Otherwise it's the same antenna so it's not possible.
 
Bought unbranded and use on Verizon network, where in settings do I look to see about data while on a phone call?
 
having same issue on Xfinity with s9+ NO data while on calls.. did update reset something bc others things [notifications alarmsetc all changed also] been trying to redo my old setting for all my apps & now this... anybody anywhere any idea thanks

jay
 
anyone doing pie update STOP! BUGGG ON Samsung side. will stop voLTE usage... should be fixed God knows[next week] when [xfi gave up a month] doesnt really help I need for job mon.
 

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