lasted for four years before heads deteriorated

i bought four of these in 2016. maybe they've updated the design. but the head on the microusb side--that one puts in and out of the phone--that eventually breaks. the base that holds the fat part of the micro usb together falls apart, letting the base go up and down the cable. that leaves the metal insert exposed--which worries me a little about getting shocked. i noticed once that metal is exposed it only works intermittently on my wyze camera. thankfully, monoprice has a lifetime warranty and i was able to upgrade to other cables--hopefully those don't come apart as well.