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!
Summing things up, refrigeration can keep your cooked shrimp fresh and safe to eat within 3 to 4 days. Freezing, on the other hand, can extend the shelf life of cooked shrimp up to an indefinite period. There are several recipes, though, which you can try to salvage frozen cooked shrimp. You can use it for a tomato and shrimp stew.