For the loop watch bands the problem is the way the band connects. If you look at the photo the distance between points A and B is not enough to allow the pins to reach the pin holes. This is due to the fact that the 3g version is thicker than the non 3g versions. If the manufacturer were to increase the length of this part of the connection it would work.
Most other watch bands the connection point is 20mm as is the rest of the connector so there is no problem. It is that part that juts out that is causing the loop bands to fail.
Posted via the Android Central App