T-mobile and Sprint: Dial #NUM# (#686#) in the Phone app. [1] X Research source EE: Text the word Number to 150. [2] X Research source Vodafone: Dial *#1001 in the Phone app. O2 and Giffgaff: Text the word NUMBER to 2020. [3] X Research source Telstra: Dial #150# in the Phone app. Other carriers, including AT&T and Verizon, don’t offer this feature. You can try searching for other carriers and “phone codes” to see if your carrier has a number to dial.
If you can’t make outbound phone calls, take the card to a store that sells that service carrier’s SIM cards. A customer service representative should be able to help you track down the associated phone number. If you bought a new SIM card, it may not have a number yet at all. Once you place it into a compatible phone, you’ll be able to activate it on the carrier’s network. If you are calling from the phone using the mystery SIM card, the carrier may be able to detect the number automatically. If not, have the SIM card visible so you can read aloud the serial number.
If you don’t see the phone number, you should be able to find it in your iPhone’s Settings.
If you do not see your number, look for “SIM Status. " Tap that to view the final sub-menu where your number appears.
