Samsung Galaxy Tab S5e update adds Bixby Voice support
That issue is about to be addressed this week, as Samsung is now rolling out a new update that adds Bixby Voice support to the Galaxy Tab S5e. Since the tablet doesn't feature a physical Bixby button, you'll be able to activate the new feature using the power button.
As SamMobile points out, there's a new “Power key for Bixby” option in the notification shade that lets you enable Bixby Voice from the power button with a long press. The same option is available in the Advanced features menu of the Settings app.
In this case, if you have an LTE-enabled Galaxy Tab S5e, you'll be able to take calls on any other device that supports Call and Message Continuity. The Galaxy S9 and S9+ recently got the same feature in the latest July update, but other Samsung smartphones should get it as well.