As you have already known that since iOS 7 released, Apple has introduced a new feature called
Airdrop in control center
which allows you to share your data such as Photos, Location, Notes and

more. Unfortunately, this feature doesn't available on older devices such as iPhone 4, iPhone 4S and iPad 2. However, we still can get AirDrop on those older devices but just keep in mind that this AirDrop is not legit which means it looks really realistic on our devices but I have tested it on my iPhone 4 and it doesn't work. Nevertheless, it seems legit and cool so if you decide to get this fake Airdrop just follow my tutorial below: