DENT is an application that you can use to buy data and also transfer  it by registering sims through your referral link to get Dent coins and the more Dent coin you have the more data you can buy.
Step 1: Download the application Here
Step 2: lunch the app an enter your mobile number but the sim must be inside the phone you are using for verification
Step 3: After verification you will fill your information manual.
Step 4: generate your referral link by clicking the invite now and share it to get more Dent coin
Step 5: You can buy data by clicking on the available networks here.

Step 6: put the number you want to buy data for or transfer the data to, a page will you up and then click coin showing there.