Share your experience!
Hi,
I broke my back cover (glass) on my Z1. Can you tell me where I can buy new one? Mine was purple.
You have to take it to a Sony repair center
have you found a solution to fix the back cover? mine cracked too 
external cover needed...
You should use the heat gun at first for lossen the adhensive on the back cover, then take the broken one off and replace with the new back cover for Sony Xperia Z1 which has the ashensive.
And you can see more from this blog about tear down the Sony Xperia Z1 http://www.witrigs.com/blog/sony-xperia-z1-teardown/
Yes, the new back cover comes with the adhesive. You also can prepare another back glass adhesive sticker if you are still worried.
If you want to replace the back cover yourself, it will cost about $20 for a new original back cover and a piece of back glass adhesive sticker which also is original.
Following the video http://www.youtube.com/watch?v=SvJKVxfKqFc