Unlock your Samsung S5600 Preston effortlessly by dialing in unlock codes we provide just like you would dial any phone number! No software cables or hassle. It’s a simple three step process, provide us with your Samsung S5600 Preston unique serial number (IMEI) during checkout. We will run a search for your phoneâ€™s unlock code and within the indicated time frame the unlock code & instructions will be delivered to your email inbox. All you have to do is, using the phone’s keypad, enter the provided Samsung S5600 Preston unlock code and start using your cell phone with any active GSM SIM card!