

Contact the provider over the phone if you cannot find one or visit a local store for assistance. Log into your online account and check for a PUK code option. The SIM card unlock process is roughly the same for other providers such as MetroPCS, Cricket Wireless, Virgin Mobile etc. If you are no longer a Sprint customer but have paid off your device, unlock your SIM card by calling Sprint's support number or going to a local Sprint store.

To get the PUK code for your Sprint phone online log into your Sprint account and click “Get My PIN1/PUK1 Unlock Code." Open the "Phone" app on your device to access the dialer, and then type in your PUK code.

Sprint offers SIM card unlock services both online and via its 88 number. Visit your local AT&T store to get the SIM card unlocked as an alternative to using the online process. If your device is not currently displaying “Enter PUK,” press “* 05” and then type in the PUK code. Click “Get Your PIN Unlock Key (PUK).” Launch the "Phone" app on your device, type this PUK number into your locked SIM card Android or iPhone device and then tap “OK/Yes” to unlock the SIM card. If powered on, restart your Apple ® iPad ®. For Prepaid accounts, contact customer service to obtain the PUK before proceeding. For Postpaid accounts, you must obtain the PUK via the My Verizon website before proceeding. Log into your AT&T wireless account and navigate to “My Wireless” followed by “My Devices & Features” and then click on the SIM card locked device. The PIN Unblocking Key (PUK) is utilized to reset a blocked SIM card. If you’re having trouble with an unlock, you can always call the Verizon hotline for SIM unlocks 88. The process to unlock an AT&T SIM card is similar to Verizon’s. Once again though, you should be fine as far as any recent Verizon phone goes.
