Question: how long does it take to port a number from sprint to at&t?
Answer: If you order your new phone or SIM card online or over the phone, your number transfer may take up to 3-5 business days to complete. Your old phone will still work until you activate your new AT&T phone or SIM card. If you're transferring a non-wireless number, it'll take a minimum of 5-7 business days to complete.