Thin piece of film circuit fits your cell Phone perfectly - No Signal Receiving Problem - No required cell Phone hardware modification or technical support - Instant unlocking - Plug & Play - Safe secure and cheap key - Unlocks without loosing the phones warranty - Long lasting and durable solution - Installation Procedure: Step 1: Cut your SIM to fit for the IC chip of unlock card. Step 2: Put the SIM unlock into the slot of SIM tray Step 3: Attach SIM card together with SIM unlock Step 4: Slide the SIM tray into the Phone SIM cabinet - Compatible models: refer to photo display