I've used invisibleshield before on my 3GS (it was great, after about a year of use my screen was pristine when I peeled it off to sell the phone).
I just got a black bumper for my i4 and I'll be adding a invisibleshield to the back of the phone, but I don't think I'll cover the front as I think it'll compromise the retina display clarity a bit. On the back I don't really care if there's a minor 'orange peel' effect... better than having scratches.
I just got a black bumper for my i4 and I'll be adding a invisibleshield to the back of the phone, but I don't think I'll cover the front as I think it'll compromise the retina display clarity a bit. On the back I don't really care if there's a minor 'orange peel' effect... better than having scratches.