Since some reviewers apparently already had problems here following clarifications:
1. First carefully consider and act afterwards.
2. The adapter must * never * be alone pushed into a SIM slot, otherwise he usually no longer goes out without damaging contacts. I have already applied to a USB modem ZTE MF190 the trick nachzuschieben a 11mm wide Kunstoffstreifen in the thickness of a MicroSIM card in the remaining window and then pulled the adapter together with the Kunstoffstreifen.
3. Place the adapter on a flat firm surface with the retaining corners down and only then press the MicroSIM in the free window firmly into place. The MicroSIM locks with a distinct click, while also breaking anything.
4. The adapter with the inserted MicroSIM is by design a trace thicker than a simple SIM card. Depending on the version of the SIM bay it can hook the Einschiebeversuch. When USB modem ZTE MF190 you raise in the case of the free end of the adapter 1 to 2 mm and then can easily push the adapter into the bay.
Supplement: There are obviously SIM slots which are so thin that a MicroSIM with this adapter does not fit for Samsung SGH-D820 B .:.. In all my other phones it went smoothly.
