I've cracked the back side of an iPhone when it was made of glass, but never the front side. That changed with iPhone 6 Plus - the screen got hairline cracks when the device was dropped from about 50cm (1 1/2 feet) high onto a brick road. Getting an iPhone bought overseas serviced by an Apple designated service center in Korea isn't possible due to local warranty (as opposed to world-wide), so I looked for other ways to get this fixed.
Screen Glue smartphone screen repair fluid
This is when I found this "Screen Glue" manufactured by DiYPRO which claimed to fix screen cracks by filling the gaps with a UV-curing glue. The package, which costs about US$17, comes with 5 ml of the glue and a sheet of instructions. Frankly, the price seemed steep for the amount of glue provided, but if it could get the job done, I thought it wasn't too bad. So I bought a bottle and got to work.
When I started "The Toon-Box", I thought that I would eventually hit 4 digits in the number of strips, so it started as #0001. Ten years later, it really happened - today, it hit #1000. Wow.