Just made it in 100 minutes. Most of the time was spent in removing battery itself, due to adhesive stripes. They torn from the center, I could see the tear growing from inside. Dental floss and iOpener have been very successful even though very long. I never thought that my dental floss would have such an use. Like many users, a flawless removal of those $@$*!& battery strips never happened to me, whatever the care I take, or the veeeeeeery slow speed I pull.

Before to attach the final brackets on screen connectors, I dared turn on and checked the antennas (I had a doubt with this antenna strip reconnection and the front camera connector) so I tested the screen, the touchID, the front camera and checked that all signals were present. Then shut off again and closed the device.

works fine, no flaws like battery not recognized or anything like this. I now have a faster iPhone probably because iOS does not slow down anymore due to weaker battery capacity. Thanks to iFixit team for offering this opportunity.