Features:Brand new and high quality.When Switch 2 SIM cards ，you Need turn off the phone.No need to cut your SIM card.No data loss when switching 2 numbers or turning on/off the phone.User friendly option menu will embed into your phone menu system.Very simple operation， easy plug and play.Dual Sim Card Adapter for Apple Iphone 4 (4G) 4S Samsung S3/S4/Note2/Note3 i9300 7100.Switching on-line without turning on-off default selection function.Very simple operation， Easy Plug and Play to Let your iphone 4 get Two SIM Cards available in single one mobile phone. The adapter connects your current iPhone's Micro SIM with another normal size SIM card.No data lose for some mobile phones when switching 2 numbers or turning on-off.Both of numbers on-line at any time.Special card IC design compatible with all GSM mobile phone.Size:8.4cm x 1.5cm.Package Included:1 x iPhone 4 4G Dual Sim Card AdapterNO Retail Box. Packed Safely in Bubble Bag.