I got 3 messages with the following orders: 1. approval notice 2. card production 3. Post decision. In online system flowchart, the post decison is between approval and card production. But I think the post decision message show up due to they send out the card.
Same here. Got txt msgs of approval and then card production back on Monday night, then on Wednesday night received txt msg of Post Decision Activity notice. Didn't receive any letter from USCIS yet.