Hottie® Products have demonstrated in lab tests that they can increase the available signal strength up to 300% when in close proximity to the device. Note that many cell phone and WiFi devices may require more than a 300% increase in signal strength to produce another bar. Any increase in bars is strictly dependent on the software algorithm in a particular device. However, Hottie® Products actually boost locally available signal strength, as shown in yellow. Therefore keeping a Hottie® Product in close proximity (1 inch is optimal) to your cell phone & WiFi devices will boost the signal strength which will increase the devices’ usable range!