I might be completely wrong, please correct me if I am wrong. If replacement battery is washout adhesive strips, and I have purchased the adhesive strip can I connect the battery ,connect display , start the iPhone and charge it just to check if the battery, is working…I know I wont be able to move the iPhone but incase the battery does not work, then I will have to buy the strips again too.
It is not safe but if you are in my situation ….try a sludger to lift the battery just a bit and use a tweezer to pull out the end of the tape from under the battery and then pull it with finger
removed the haptic engine but still the strips broke.
For some odd reason the screw “One 2.2 mm screw “ orange circled seems to be stuck and can not be unscrewed.