Top result when scratched Iphone but only after 8 hours of hard work!

30 of 60 Amazoner - exactly half - have so far not satisfied with Displex.
I can understand that, and I also say it is ahead:
Sometimes I have to work eight hours hard to achieve good results, as the Iphone 3G my daughter (with countless fine and some very deep scratches on both the shell as on the screen):

- Minor scratches
On the back cover Kunsstoff-I could with this Displex and a high-quality polishing fleece within approx. Super eliminate 30 minutes.
When display it took approx. 2 hours (it is probably because that is probably the iPhone display glass).

- Deep scratches
However, I could do virtually nothing against mitleren and deep scratches.
Even after 4 - 5 hours, the success rate was 20-30%, and it was clear that I would have here perhaps a whole week of my life to sacrifice. This would require heavy artillery are deployed.
Here I have finally sandpaper 3000 he applied grit along with Displex and from time to time a drop of water (with cooking oil, it is also is just more difficult to clean).
I would say that this sandpaper, depending on the pressure, approximately 10 - 20 x more efficient than Displex alone.
Here, too, were required to provide the rudest several hours.

The last operation was without sandpaper, only with polishing fleece and Displex, took about 30 minutes to eliminate the super fine scratches of the sanding paper.

Together I rd. Have to invest eight hours free time, but the results are really worth 5 stars.
(How troublesome this was you can see from the filthy polishing fleece on the client screen).

CONCLUSION
So I suspect that the 30 dissatisfied Amazoner were not willing to invest so many hours, or the rudest have not removed with ultra fine sandpaper.

In my experience Displex is only a very fine polish for the last operation or very fine scratches, mainly for a soft material such as polycarbonate.
Displex I have also successfully used for scratched DVDs or art offs coverings of electrical appliances such as vacuum cleaners or coffee machines.
For large areas Displex but just too expensive. But I have also tried Xerapol (11 euros for 50 gr), by the company AVI. The effect is the same.

For heavy tasks such as deep scratches or harteres material Displex is too weak, you must first use sandpaper (by 3000 it can not go wrong, especially if you hold the paper wet and exerts too much pressure. It is so fine that it no visible scratches leaves). Then you can use Displex.

On the iPhone, the display is made of glass. Meanwhile, I have tried the glass polishing of Turtle Wax: The funktionniert super. The final touch I miss having Displex or A1 Nano polishing of Dr. OK Wack.