Description: You can use two SIM cards and TF Card simultaneously.You don't need to choose between having two active SIM cards or only SIM and TF Card. It can optimize the performances of your dual SIM smartphones and tablets which have an dual SIM slot. It is very easy to install.The SIM extender adapter takes place directly in the dual SIM slot under the TF Card. You can enjoy the dual SIM function of your phone as well as the SD card memory with SIM card extension. It has special card IC design customised for Andorid smartphone users. Light weight and no affect on battery consumption. Specification: Material: Conductive glue wire Mini SIM Size: Approx. 3.8 x 1.8 x 0.15cm/1.50 x 0.71 x 0.06inch Micro SIM Size: Approx. 3.8 x 1.5 x 0.15cm/1.50 x 0.60 x 0.06inch Nano SIM Size: Approx. 3.8 x 1.3 x 0.15cm/1.50 x 0.51 x 0.06inch Package Includes: 1 Piece SIM Card Extender(7 Pack)