The display on this year's Galaxy Z Flip8 is really impressive. On the outside is a 4.1-inch Super AMOLED cover display with 1048 x 948 resolution with a larger 6.9-inch main display using a Dynamic AMOLED 2X panel at 2520 x 1080 resolution on the inside.
Samsung already applied a specialized flexible thermoplastic polyurethane (TPU) or PET film out of the box. It has advised against peeling it off or layering another protector on top of it. Otherwise, you'll mess up the hinge, and likely void your warranty.
Realistically, you just need to buy a tempered glass shield for the outer cover display, unless you get a free inner protector replacement somehow. Meanwhile, here are the top options you can choose from.
Spigen GlasTR EZ FIT screen protector
$16.99
Spigen's cover screen protector solves the issue of misalignment with an included hard plastic auto-alignment tray. It snaps right onto the phone and leaves zero bubbles. Plus, it uses high-hardness 9H tempered glass that doesn't catch on cases.
ZAGG Glass Elite screen protector
$29.99
If you frequently drop your phone or are a klutz, ZAGG's screen protector is what you need. Instead of standard soda-lime glass, the manufacturer uses an aluminosilicate ion-exchange process (similar to the material on high-end military gear). It offers superior shatter and scratch resistance and has a surface treatment that blocks the oils from your fingers.
UniqueMe Outer Screen Protector
$14.99
UniqueMe offers a reliable multi-pack of crystal-clear 9H tempered glass protectors with 100% touch sensitivity. Each one delivers scratch and drop defense at a fraction of the cost. Buy it if you want backups without breaking the bank.
Ringke Cover Display Tempered Glass Pro
$16.99
An ultra-thin 0.3 mm tempered glass option that preserves touch sensitivity. It also provides great scratch and impact resistance with a precision alignment guide.
Supershieldz Dual-Screen Protector Kit
$12.99
This kit includes two 9H tempered glass protectors for the outer cover screen plus two TPU film layers for the inner folding screen. You'll have a physical shield on the front glass and a spare backup for the tricky inner film some day.
Ferilinso Military-Grade Protector
$14.99
Ferilinso's screen protectors are made of standard 9H glass with oleophobic coatings to fight fingerprint smudges. The brand also includes extra alignment frames. It has everything you need in a backup kit as insurance for your new phone.
LYWHL Tempered Glass Screen Protector
$7.99
You may be limited in your inner screen choices while your phone is still new. But you can still buy a phone case. Your phone deserves the best hinge protection. You may be lucky to snag one with a built-in flap that covers the hinge when closed or even offer a raised lip around the outer screen. Visit Amazon for the many available options and the best deals.