iPad Mini Touch Screen Compatability

I dont believe they are. I believe the mini 3 is a different digitzer than the two and on the 4 it might be different as well, but i could not find a part for it! Keep in mind on some of their new ipads like the Ipad air 2 and pro they are fusing the displays to the digitizer so it may be that way on the mini 4, hope this helps!

I know for sure that the iPad mini screens for the 1&2 will not work for the iPad mini 3 because the home button on the 3 is not the same size as the 1&2. The iPad mini 4, I've not seen one of those but thinking the LCD and glass are going to be fused.

I think the iPad mini's have little traps in them from Apple to prevent us from repairing them. I think the best guide for repairing the iPad mini is on a website called iPad rehab, google it , and using high quality screens with the copper edges and kapton tape and you will not have any issues.

no, ipad mini 1/2 is same digitizer but ipad mini 3 and mini 4 is different, ipad mini 3 you can change a digitizer by yourself easily, ipad mini 4 you can't, you normally need a lcd digitizer assembly for ipad mini 4, only if you are a refurbished factory have special cut glass tools then you can change ipad mini 4 digitizer.

Yes you can use iPad Mini 1/2 digitizer in iPad Mini 3 but you can’t use the touchID. The iPad Mini1/2 uses the same type and size of plug as the iPad Mini 3. I have tested it and works fine.