Nano sim can be restored Micro sim or standard sim via nano sim adapter, and then Nano sim will be match all mobile devices. Nano sim smaller than Micro sim size only 12.3*8.8 mm, Nano sim adapter, allow the Nano sim restore Micro sim or Standard sim. Nano sim adapter service life can arrive thousands times cause the high strength PC material was take advantage by. The Nano sim adapter was carved by precision molds,The accurate size won't make the Nano sim drop from the adapter,restore them easily. HOW TO USE IT? PLS SEARCH SAMDI AND SAIGE YOUTUBE VIDEO IN INTERNET Hello everyone,it is a pity when I hear few people meet little trouble,their sim card was stuck inside mobile phone,They directly give a mistake feedback ,in fact this question can be avoider completely.A good SIM card sets,only need it's size precision, material environmental protection, durable. Even the best SIM card adapter,improper useing is likely to be stuck inside a few model mobile phone, the situation is with different mobile phone SIM card slot and the user's experience. Completely avoid this problem only need the following two steps: 1. Cut your NANO OR MICRO SIM one edge into a tilt Angle. 2. Improve the skills and techniques may be different base on different SIM card slot, one part of SIM card slot need press hard SIM card, this is for changing the SIM card slot dome elasticity inside the shell, not all the quality of the mobile phone SIM card slot as well.Part of the customer gave this sim card adapter good evaluation, it may be that they mastered the skills, it may be that their phone SIM card slot is easy to install. If using incorrect way to make the stuck inside the phone, Don't worry about it, solution: insert a thin Plastic film under the SIM, later try pulling out the SIM card.