Don’t we all hate it when our mobile phones loses signal during important calls? Of course we do. With the antenna signal boosters, your calls will never get cut off ever again. These antenna signal boosters are attached to the back of your smart phone device, right under the battery pack. The signal booster enhances the signal being transmitted out by acting as an in-phone antenna. With great reviews and an incredibly low price, you will not be disappointed by this magical mobile phone signal enhancer. Along with internal cellular signal boosters, we also carry external signal boosters that increase the bandwidth of your smart phone device. If your mobile device is running 3G when it could run on 4G, an external signal booster for your home or office should do the trick.