If a custom base station was placed in an area with mobile devices nearby, would they automatically fall back to 2G from 3G, since the 2G signal was stronger? Or would the 3G signal need to be suppressed completely by a noise generator for a fallback to happen ?
The nearby target mobiles phones would be 70% Androids,20% iPhones and 10% 2G Only phones, this is Indian Mobile network specific question.