According to the rules presented by Straight Talk, any data plan outside the $55 unlimited data plan will not work correctly with your Hotspot. Therefore, it's best to purchase this option if you wish to convert your Straight Talk Phone to a Wi-Fi Hotspot. To buy this plan, go to StraightTalk website, log in with your email and address, then click "Buy a Service Plan" next to the list of Quick Links. However, if you don't have a Straight Talk account, proceed to www.StraightTalk.com and create one.