So first attempt was a disaster, removed it carefully as it sticks solid, then watched the Samsung Official YouTube guide, very good but quick.
The second following the Youtube channel was better but the middle bar left two lines and the top blue slide got stuck and would not slide off resulting in marks to the screen protector.
Galaxy Z Fold4: How to apply Front Protection Film ǀ Samsung - YouTube
Really cannot understand why Samsung did not provide it fitted as per the ZFold3.
Also the screen protector is a major dust, lint magnet.
Regards Obsydian
DAILY DEVICES
ZFold4 [Mobile], Pro5 [Watch], S8 Ultra [Tablet], Book2 i5 [Laptop], Buds Pro2 [Buds] M70A 32/43" [Monitor], Smart Tags+, iPad Mini 5 and iPad Pro 12.9 GEN2 [Tablets], Dell Inspiron G5 Laptop
HOUSEHOLD DEVICES
ZFlip3 [Mobile], Watch5 [Watch], S7+ [Tablet], QN95A [TV], Q900A [Soundbar], MC28M6075CSM [Microwave], Samsung Level [Speaker], Buds Pro [Buds], iPhone 12, iPad Air 2, Air tags
Regards Obsydian - (Car & Tech Evangelist)
MY DEVICES: ZFold4, Watch6 Classic, Book2 Pro i5 5G [Laptop], Buds Pro2, M70A 32 & 43”; [Monitor], Smart Tags, Dell Inspiron G5 [Laptop] / FAMILY DEVICES: ZFlip3, ZFlip4, ZFlip5, Watch6 Classic, S8 Ultra; S7+ [Tablet], Buds Pro, iPhone 12, iPad Air 2, Air tags, iPad Mini 5, iPad Pro 12.9 GEN2 [Tablets] / HOME DEVICES: QN95A [TV], Q900A / SWA900S [Soundbar, Rears], MC28M6075 and MC32K7055 [Microwave], Jet 75 Complete (Vacuum), Samsung Level [Speaker]