The mobile phone signal booster is also there for the vehicles. For instance cars, RVs, trucks and even for the boats, the signal boosters can be placed. The principles for the both signal boosters in the building as well as the signal boosters for the vehicles are same. Therefore this device in additional helps the person from being poor signal while travelling. A portable device is been used for boosting up the signal, whereas this portable appliance is wireless which is obliging in giving additional flexibility to the person in ever-increasing the signal in the vehicle. Hardly the cost of the signal booster ranges from $25 to $180.