SIM Application Toolkit. SIM Application Toolkit (commonly referred to as STK) is a standard of the GSM system which enables the Subscriber Identity Module (SIM) to initiate actions which can be used for various value-added services.
Cook them immediately if they have been thawed for no more than three days! Once you cook them they will last at least for another four or five days in the fridge! If nothing else put them in a good shrimp marinade for about one half hour - then SMOKE them over mesquite or hickory wood for one hour. These will be eaten up before five days is over! Good Luck & Bon Aperitif!
Wrap the shrimp well in plastic or keep it in an airtight container, and place the container on a plate to catch any errant drips. Shelled and unshelled, cooked shrimp stays fresh for about 3 to 4 days in the fridge, wrapped in plastic or stored in an airtight glass or plastic container. If you buy shrimp on a hot day, ask for a cold pack with which to take it home or put a cooler in your car to transport the fish home.