Yes, Nokia 7 Plus does have the electronic stabilization.
Yes, you can record 4K videos with Nokia 7 Plus at 30fps.
Nokia 7 Plus front camera is 16MP and it has an aperture of f/2.0.
Yes, Nokia 7 Plus does have the headphone jack, which is located on the top panel of the phone.
Great battery life, immersive display, solid design, and software at its purest, that's the Nokia 7 Plus for you.