I replaced the battery on my own iPhone SE at first, and everything worked when I had reassembled it. But then I thought doing the same thing on my wife’s iPhone SE would go as smoothly as on mine, but boy, were I wrong. Taking it apart and replacing the battery was no problem, and reassambling it wasn’t either. But when I thought I had finished and tried to start it, nothing happened. It’s completely dead. The battery won’t charge either. So, what to do? I’ve tried reassembling it twice or thrice now too. Did I brick the Phone?

I made it! Excellent guide! I followed all steps except the one with the powercord, since I read in the comments that it wasn’t really necessary. And it wasn’t, so it’s good to read comments too! :)

Thank you so much for this guide!