We have been using the 3g+ FLB3202 extension card for a few years. Recently we have received SIM cards from AT&T that are not working the the extension card. We have noticed the SIM cards have a smaller gold contact area than previous SIM cards that do work. See attached image.
Does anyone know if the SIM cards with the smaller contact area are non-3G and therefore will not work with the 3G extension cards, or if the 4G extension card might work with the SIM cards with the smaller contact area?