Mobile telephone device for storing a plurality of changable charge rates and time limit data

摘要: The mobile telephone is well adapted for use as a rental phone. It has an on-board computer which computes and stores usage control information such charges of the telephone. Time charge limits can be set For example, to disable itself all or selected category incoming outgoing calls after passage pre-determined time, and/or when total reach maximum. Preferably, these adjusted remotely. valuable in vehicles. deliver its stored called interrogated by at station vehicle returned. checked-out enabled, time adjusted, from same remote station. also particularly other types rentals, hotel motel where housed portable briefcase carrying case. are enforced automatically, changed remotely, with versions device. Features provided block unwanted intended prior renter phone; give credits "dropped calls"; selectively locking phone prevent unauthorized but emergency calls, data transmission similar calls.