There's this App I want to show you, I've been using it to Claim free airtime for like a month now.
You earn diamonds by doing some Activities like Inviting other people, Chest Battle, Lucky Spin And Claiming the Crazy chest.
You can Redeem your Diamonds to airtime of either ₦50,₦70,₦300,₦800,₦1500,₦3300,₦50000

How To Participate.
1----Search for "SHAREIT LITE" on Google play store and download.
2----Open the App, and click on the Diamond Chest at the lower right of your phone.
3----Then You'll see a pop-up showing you've been rewarded with 25 chests then click Claim then register with your Phone number,Gmail or Facebook account.
4----After Successful Login, Look for Friends Code and Put [b](739954)[/b]and submit and you'll be Credited with 6000 diamonds.
5--- Click on Lucky Spin to spin and get morr diamonds