Product: Mobile > Cell Phones > T-Mobile Cell Phones > SGH-E105
PUK stands for Pin Unlocking Key, this is a code that only your GSM cellular operator can provide. A PUK will prevent the use of that particular SIM card in any handset (only SOS calls can be made). It is important to note that it is recommended to not try inputting random codes. After several failed attempts, the card may be blocked, rendering it completely useless. When that is the case, the carrier will need to replace the SIM card.Service Provider Contact Information
For Information on the SGH-E105 click here.