How does Online Top Up work? To top up online, visit Online Top Up. Steps to use the service: Step 1. Register for free Step 2. Complete the Top Up details Step 3. Confirm the Order Summary Step 4. Payment Related articles When does my SIM card expire? Am I able to save the mobile numbers that I top up? What is Online Top Up? How to activate Turana Pass via My Digicel App. What is APN (Internet Settings), and how do you use it?