How long does it take to remove an activation lock request on iPhone?

You bought a used phone. Apple will not remove Activation Lock on a used phone; only the person who enabled Activation Lock can remove it, or the person who first bought the phone new if they are the person who enabled this theft deterrent feature and simply forgot their password.

If You sent the receipt to Apple and they denied it, then it means you most likely purchased the phone from a store that is not an authorized reseller. It has nothing to do with the age of the bill.

In Apple eyes, that is a used phone, the store bought it from Apple, then you bought it from the store. The store you bought it from is the original owner.

Hello ~ Take your iPhone into Apple along with the original purchase receipt from Apple and let them discuss this with you. Where did you buy this iPhone?

~Katana-San~

You will have to provide more details. Are you talking about a phone activation lock? If so, the provider that locked the phone needs to unlock it.

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