Alright, so I just performed the “surgery” on mine. There’s a couple of things I would like to share: a) Be REALLY careful when taking the back cover as the plastic part around the camera breaks unbelievably easy. Just pry very slowly and patiently, don’t rush it. b) When prying the old battery, it’s necessary to pry back AND forth, millimeter by millimeter. It seems the tool doesn’t go the whole way in, thus why it’s needed to (very) slightly deform the battery’s edges. BE CAREFUL HERE. c) When assembling the phone again, during the re-installation of the NFC antenna, the black cover of the PCB where the antenna connector attaches, has two little flaps, it might need a very slight trimming with scissors if it doesn’t get back into the sockets where it latches. DO NOT FORCE IT IN, as this might damage your PCB and it’s better to damage one of the little flaps to damaging the PCB. All of that being said: Thanks so much for the guide!. Battery replaced, waiting for a full charge to start using!.