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!
Cooked shrimp will usually stay good for 3 to 4 days in the fridge and 4 months in the freezer. How to tell if raw shrimp is bad? The best way is to smell and look at the shrimp: signs of bad shrimp are a sour smell, dull color and slimy texture; discard any shrimp with an off smell or appearance.