Fitting a new battery to iphone 6s
My iphone 6s model number A1688 has a battery which is connected at the top (narrow edge) of the battery. The replacement battery I bought and all others I have found pictured on the internet have a connection which hangs at the side (long edge) of the battery.
Is my phone unusual? am I missing something obvious? any guidance appreciated.
Thank you
iPhone 6s, iOS 15