iFixit Replacement Battery Not Charging or Reading % right
I ordered the battery replacement kit for the iPhone 6 Plus and followed the replacement guide as closely as possible. I did run into trouble with the adhesive but eventually got the old battery out. When I put the new battery in, I found the connector didn't set very nicely, but I believe it connected, as well with the other connectors (the digitzer, etc) up top.
After reassembly I turned the phone on and was just happy to see it turn on successfully. After a few hours of use though I noticed the battery percentage wasn't reading right. It would keep flip flopping between numbers like, 12%, 9%, 12% again etc. I thought maybe a calibration would help, but when I let it charge overnight I noticed it didn't charge at all and stayed at 9% all night.
I'm really nervous and upset about this and hoping for some advice or help.