OEM or generic glass digitizer Replacement?

Comparison：

1. The QR code. The one on fake digitizer is a little big and scattered. You can see the picture one. Black one is original and the white one is custom.

2. If there is a visible but can't feel ring around the front camera hole like picture two, it must be original one. And the fake one doesn't have. That's the most important evidence.

3. If you found there is the glue traces around the edge of the digitizer cable, it's likely the custom one. because the original one is manufactured carefully with original adhesive but the fake one is glued together. You can see the picture three.

4. You can tap the digitizer. Tap the fake one sounds like tap a single glass, but tap the original one sounds like tap a glass on a book or something thick. This comparison can't be used alone but can with comparison 2.

5. That also should be used with above comparison. Drop a drop of water on the surface of glass then move the digitizer, the drop on the original digitizer can move quickly but the one on custom digitizer will move slowly just like nearly stick on the glass.

6. The weights are different. The original one is heavier than custom one. For example, the original digitizer for iPad 2 is about 121.5g while the custom one is about 106.4g.

Hope can provide you some info.