Origin
Right off the bat, no, WD-40 cannot fix the glass on a cracked phone screen. It doesn’t matter if it’s an iPhone, Android, flip phone, or really any kind of phone. In fact, people might find more use for WD-40 on an old candlestick telephone to loosen up some of the parts for repairs than for any modern device.
Courtesy: Glen Bledsoe/Flickr
The idea that WD-40 can magically fix a cracked phone screen has been featured for quite some time in a number of YouTube thumbnails and online advertisements. It’s also been discussed on online forums.