I did it without any problem. You just have to really pay attention to how things are set up and be careful not to touch parts that are not involved in the replacement. The pressure contact underneath the top screw of the battery connector will come loose while prying the battery connector from its socket so you'd better remove it entirely and put it back in place after you've clipped on the new battery's connector. Was full of doubts and fear that I'd damage the phone before I started but I m happy I went on and did it by myself cause it's not worth the 60 euros one has to pay for the replacement! Get the tools and use them for all your repairs instead! Thanks for the guide folks!