iPhones have a coating on the entire unit. The best way to repair it is to fill in and build up the scratch, layer-by-layer, using a repair kit that addresses coated plastics. Since coatings refract light differently (tint), results will depend on the depth and width of the scratch and tint of the coating. Smoothing a scratched surface with a series of abrasives will strip all coatings. Since the touch system is covered by a clear flexible layer, which is then covered with the iPod coating/s, you will want to be particular with the repair system you use. Scratch Pro has a filler and it is about $20. I have listed a few good sources to help you out.
LOL, yes, it can definitely scratch. It will be scratched, but not easily. You can get an iPhone case and screen protector to protect your iPhone from scratch. You can have a look about apple accessories on Topons.com
Yes
Yes, although it may appear scratched if you have a screen protector because what appears to be a scratch is actually a rip in your protector, and if you run your fingernail through the scratch and you feel your scratch indent, it's not a scratch in your iPhone screen, it is only a rip in your protector
If by "fix the iPhone 4" you mean fix the problem with the antenna and people putting their gig
It is best to fix it with a wax specifically for glass with a scratch remover in it.
The following 4 ways can help you to repair your iPhone Stuck on Black Screen: 1.Fix iPhone Black Screen Problem with TunesKit iOS System Recovery Step 1, Connect iPhone to the computer Step 2, Download frimware package Step 3, Fix your iPhone 2,Fix iPhone Black Screen Problem by Hard Reboot 3,Restore iPhone to Factory Setting to Fix iPhone Black Screen 4,Seek for Apple Genius Bar to Fix iPhone Black Screen
Yes it does a little...
If it is a shallow scratch, then you can use an item such as Scratch Fix 2in1.
Yes, a tinfoil stylus can potentially scratch an iPhone screen. While the iPhone's glass is designed to be scratch-resistant, using a stylus made from metal or other hard materials can still cause damage if enough pressure is applied. It's always best to use a stylus specifically designed for touchscreens to avoid any risk of scratching.
Super Glue. If done correctly.
Just scratch your Ball's.
It's a cell phone screen. Of course it scratches.