Features: 1.Widely Compatible: SIM card extender is compatible for Android smartphones with mixed SIM card slots and tablets with mixed dual card slots., Such for iP, for Samsung S7, S7 Edge S8 S8+, for Huawei Mate7 8 9, for Xiaomi 4S 5 5C, for Lenovo P2, for Vibe X3, for Vibe K5 Note, etc. It does not need to install APP and is easy to install. 2.SIM Card Extension: This SIM card adapter allows you to use two SIM cards in your dual card mobile phone at the same time. You don't have to choose between having multiple SIM cards. The operation is very simple, plug and play. There is no data loss when switching 2 numbers or turning on/off the phone. 3.Excellent Design: Special card IC design customized for smart phone users. Light weight, no impact on battery consumption. Increase the functions and improve the capacity of your dual card mobile phone. 4.Easy Installation: The SIM extender adapter is directly placed in the dual card mixed slot under the SIM card. It allows you to connect your two SIM cards to your smartphone while keeping the micro storage card in its slot. 5.Soft Flat FPC Cable: Made of FPC material, this SIM card extension adapter is durable and sturdy, 8.4cm length, flexible and conv to use. specification:Item Type: SIM Card Extender Material: PCB Gross Weight: 2g / 0.1oz Size: 8.4x1.6cm / 3.3x0.6in Applicable:Ccompatible with all phones with SIM card slot Connection Interface: Nano SMI card Expansion Interface: 2pcs standard SIM card PackageList:1 xSIMCardExtender NoteAfter changing the card, you need to restart your phone.