The product itself USB interface, mainly for computer access, if you want to pick up customers using mobile phones, you can choose to add WIFI box, so that you can support the current smart phones and tablets on the market. iphone, Android mobile phone and tablet can be used, if you do not add, you need to use the OTG line, currently supports only LG, Samsung mobile phone system version 4.4 and millet 3, millet 4, VIVO X5, Y66 OPPO, Nubia, Charm Blue MAX R9S, R9S Plus, R11 (other types of OPPO mobile phone does not support HUAWEI V8) HUAWEI B199 HUAWEI Mate8 head 4 non all Android mobile phone can use mobile phone, iphone can not use.