https://wccftech.com/galaxy-note-9-teardown-ifixit/

The team at iFixit has taken apart the new Samsung Galaxy Note 9 and the teardown has revealed that the internals of the phone are similar to that of its predecessor’s. The phone is a little shorter and wider than the Galaxy Note 8, with an additional 0.1 inch of screen estate. At 8.8mm, the display is a little thicker than the 8.6mm display of the Note 8.

The fingerprint sensor has been relocated to a more convenient location: below the rear camera. The flex cable location is less susceptible to accidental damage. However, the short cable makes the reassembly a little difficult. iFixit has also found that the Galaxy Note 9 has a 15.4Wh battery which measures 87.7mm × 41.5mm x 6mm. Coming to one of the reasons why the Note 9 is also essentially a gaming smartphone; the massive heat pipe.