Step1: First of all you have to type udaan fos app in the search bar of google.
Step2: After that, the URL of this website udaan fos app is visible on the first number in front of you, then you have to click on it.
Step3: You will come to the next page, here you will see a box to enter phone no.
Step4: Here you have to enter your registered phone no correctly, and click on verify.
Download: udaan fos app
Step5: You will directly come to the dashboard of this udaan fos app. So in this way you can log in inside it very easily.