My iPhone 4 front glass broke. Screen is OK, I only want to replace the glass. Assuming I get a new glass, is it hard to replace it myself? Can anyone provide some step by step tutorial on how to replace it?
As with every "do it yourself" and "Apple", you have to be careful and know that it will possibly void your warranty. In any case, if you still decide to proceed with this, it is certainly possible to replace your iPhone 4's glass. There's a very nice tutorial with pictures at iFixit.
"Replacing the display assembly will give you a new front glass panel, digitizer, and LCD. The LCD is adhered to the glass at the factory and the two parts are not separable without damage."