I'm trying to use my brothers old phone, but it keeps saying someone has used find my iPhone on him, but that was a while ago when he used that .. && Now it won't let me reset the phone .

Hi

Activation Lock prevents unauthorised use of the iPhone if it is lost or stolen.

If the iPhone remains locked to your brother's Apple ID account, then it can only be disabled by him either entering his Apple ID and password on the iPhone or by him removing it from his devices list in Find My iPhone via iCloud.com. If you cannot arrange for either of these steps to be taken, then you will be unable to use the iPhone.

If your brother is having issues with his Apple ID credentials:

It may help to follow the instructions here:

• If you forgot your Apple ID - Apple Support
• If you forgot your Apple ID password - Apple Support

If he still needs assistance, ask him to contact Apple Support or make a Genius Bar reservation, taking along the iPhone and his original proof of purchase for it:

• Contact - Official Apple Support
• https://twitter.com/applesupport
• http://www.apple.com/retail/geniusbar/

If the iPhone is pre-owned by someone else (ie other than your brother) and is instead locked using that previous owner's credentials, then it can only be disabled by that person following the same steps described above.

There is no way around this security feature.

More information and instructions:

Turn off Find My iPhone Activation Lock - Apple Support

Find My iPhone Activation Lock - Apple Support

You'll have to have your brother log in with his credentials, and then, he can wipe the phone. He will also have to remove the phone from his active devices.