When did Samsung Electronics Co LTD make the GT-i9100?
CREATE TABLE "ecosystem_operators_mobile_phone_and_cli" (
  "company_name" text,
  "hardware_model" text,
  "accreditation_type" text,
  "accreditation_level" text,
  "date" text
);
SELECT "date" FROM "ecosystem_operators_mobile_phone_and_cli" WHERE "company_name"='samsung electronics co ltd' AND "hardware_model"='gt-i9100';