DO set the firmware to disallow charging beyond a known-safe level and/or slow down the charging rate to a slow, known-safe speed.
DO throw up the "this device has been recalled" alert every time the user wakes the machine up.
If you must, disable non-emergency calling and throttle the bluetooth and WiFi to painfully slow speeds to encourage people to stop using the device.
But don't set it to brick when the power runs out.
If Aunt Jane or Uncle Bill lost his phone the day before the recall was announced, when he finds it he'll need to be able to plug it in and get his photos off of it.
I'd hope that it still works without charging the battery, so you can get data off if connected to the charger. But phones are always a bit special in that regard
Homeopathy (Listeni/homipi/) or homoeopathy is a system of alternative medicine created in 1796 by Samuel Hahnemann, based on his doctrine of like cures like (similia similibus curentur), a claim that a substance that causes the symptoms of a disease in healthy people would cure similar symptoms in sick people.
(Wikipedia) BTW: Animal testing works roughly the same way, so it's no wonder that does not really produce any reliable results either.
Enzymes are things invented by biologists that explain things which otherwise require harder thinking. -- Jerome Lettvin