Is my phone GSM,can i unlock it? And I forgot my pin #
yes
The Samsung Galaxy S3 has only the CDMA bands 800 & 1900 MHz and the LTE band 13 (700 MHz). It isn't GSM compatible or global ready. The LTE band is technically unlocked, but it can't be used anywhere except on the Verizon Wireless network.
Samsung Galaxy S III Verizon specs
