Cricket Wireless SIM cards, including physical 3-in-1 kits and eSIM options, can be purchased online or at major retailers like Walmart and Target for approximately $9.99. Activation for new service requires an unlocked device, IMEI/ICCID numbers, and can be completed via the Cricket website or specific retailer activation pages. For details on purchasing and activating, visit Cricket Wireless Support . Activate Your Cell Phone Service Today - Cricket Wireless