Entering a wrong PUK code ten times in a row disables the SIM card permanently. Both the PIN and the PUK codes are supplied by the operator, but only the PIN code can be changed by the user. 0 - 9 Every SIM card will have a Personal identification number (PIN) and a Personal unlock key (PUK) code. If you enter the wrong SIM pin more than three times, you need a PUK code to unlock a SIM. And, multiple incorrect PUK code entries might permanently disable the SIM card. PUK is an abbreviation that stands for 'PIN Unlock Key'. It's an eight-digit code that is linked to your individual SIM card. As it is linked to your SIM card, there is no such thing as a universal Assurance Wireless PUK code. The only time you may actually need your PUK number is if you enter the wrong PIN number three times. What does "GSM" and "CDMA" mean? GSM and CDMA are types of wireless networks. (GSM stands for Global System for Mobile Communications, while CDMA stands for Code Division Multiple Access).GSM is used worldwide, while CDMA is used primarily within the US. T-Mobile and AT&T run GSM networks, with Sprint and Verizon using CDMA networks. Invalid MMI Codes. If you input an incorrect code on your phone for a certain feature (such as call forwarding,) you'll receive an "Invalid MMI Code." You may also receive an "Invalid MMI Code" message after entering correct if you haven't subscribed to the service or feature with your carrier. For instance, some companies offer call forwarding Social. Welcome to StandUp Wireless! Take a moment to view the links and videos below for tips and tutorials that will help you get the most out of your StandUp Wireless service. My Account Activate, manage and check the balance on your account from your phone or PC. Download Our App…. Contact Assurance Wireless at 1 (888) 321-5880 to receive an unlocking code. Make sure you are connected to the T-Mobile or Sprint network or Wi-Fi. Choose your device on the Devices page, then click the Security drop-down to find Mobile Device Unlock steps. Select Permanent Unlock. Wait while the device completes the unlock. Restart the device. 8gthk.

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