I have received from the testbericht.reviews Premium Nano Sim Adapter esorio the company for testing. The adapters were tested with Micro and Nano SIM card into the following units iPhone 4S (Micro Sim) 3GS (Standard Sim) and a Nokia 7370 (Standard Sim) The adapters are well packaged in a slipcase. (see photo) On the back of the packaging instructions is printed. (see photo) Scope of supply: 1x Nano Sim to Micro Sim Card Adapter 1x Nano Sim on Standard Sim Card Adapter 1x Micro Sim Sim on standard card adapter 1x Tool for removing the SIM card The adapters make a quality impression and the removal from the package is very easy, you are attached to the carrier board with an adhesive strip. The adapter not only consist of a frame, but it is purely a recess milled where the Sim card is inserted. The tool is stable and takes the Sim card holders of Apple devices without problems. My card Nano Sim fits very well into the adapter on Micro and Standard Sim card. The card is planned in the respective depression. To fit the respective adapters with the Nano SIM card, very good in the appropriate devices. My card Micro Sim is in the adapter for free contained to a standard Sim card not quite plan and there is a disturbing edge (see photo). Through this unevenness scratched the Sim card (see photo) very strong also after a few insertions and removal procedures in the iPhone 3GS (slide holder). For older phones that do not have reinschieben no Sim card bursts to not have this problem. If you often take the card from the device, the durability of the SIM card can be impaired. This problem would not occur if the cut would be a little lower or the adapter would consist only of a frame for Sim card. The price of this quality Sim Card Adapter is still very good. Conclusion: For this price, is one such set in every household. Thus, with a device fault and a current Nano Sim card, quickly switch to a different card size and resort to a replacement unit. Only the included Micro Sim Adapter reduces the hydric very good overall impression.