The lens of rear camera of my wife's BB Z10 was cracked after she dropped the phone from the higher ground. It requires replacement and I contacted the local repair center. They told me to leave the phone for at least 48 hours, which doesn't make sense to me. Therefore I decided to fix it by myself. I purchased the parts from other shopping online source, and I bought the tools from iFixit.
It went well. I followed all step-by-step procedures as instructed. The manual was very clear and easy to read. It took only 10 minutes for me to get it fixed.
For replacing the rear camera of BB Z10, you don't need T4. The T2, Spudger, and Plastic opening tools are sufficient to do the job! Moreover, since most of the Z10 screws are painted with dark color, do it on the top of white color base (table).