How to remove Activation Lock on an iPhone?
My parents have an iPhone 4s that worked just fine. Until one day, I turned it on and activation lock appeared. Trying to piece together the parts of the E-Mail that I could see, I came to the conclusion that it is either mine or by brother's. I tried to login with my Apple Account credentials and it rejected it. I asked my brother for his login credentials and to no avail, that failed to. I tried whatever I could find on the internet to remedy this issue, to no avail. So now the iPhone is nothing but a paperweight. Can someone please tell me what's going on?
[Re-Titled By Moderator]
Earlier iPhone models