I brought 15 stanleys through a couple years ago. I didn't even take them out of the giant amazon box they were shipped in. Went straight through without a peep from the customs folks.no problem. i routinely pass through with 2 computers. I occasionally get asked questions. If they look used, no big deal. I had the customs guy pick up the computer and look for wear on the keys. The computers i bring are big boy gamer computers or macbooks though.
I was a little worried about my wife's and mother-in-laws phone i had repaired in my pocket, but they didn't ask questions about that. I suppose if you brought in more than like 2 phones you might get into some issues.
Now that one time my wife asked me to bring 19 Stanley thermoses... Well that was not a good day.
This was a good plan when you could mixup with tourists, but now that no tourist is allowed, it doesn't sound as much as bulletproof as before.Anything you don't want them to find just keep on your body. So you can stick a few phones in your pockets without issue. And then if it comes down to it you can definitely pretend you don't speak spanish and you're confused by what's going on.