: Visit retailers like Best Buy , Walmart, or local convenience stores and supermarkets.
: Scratch off the gray strip on the back to reveal a PIN . Dial the specific "add airtime" number for your carrier (e.g., *611 for many providers) and follow the voice prompts to enter the code. 2. Buy Online via Carrier Website buy minutes for cell phone
: You can often set up an "auto-refill" feature so your minutes never run out; this sometimes even qualifies you for a small monthly discount. 4. Text-to-Refill (USSD Codes) : Visit retailers like Best Buy , Walmart,