According to the information given in the passage, one drawback of the wire-phones is that they ……….

Do you know that despite the growing popularity of cellular phones, still none of these high-tech gadgets could match the skills of your faithful wire-phone? While not offering services such as short messaging, this old and ignored appliance offers many undiscovered functions such as reaching a busy line automatically when it becomes free, selective locking, alarm clock and muting. Besides these, you can also reroute your phone line to another line, including cellular numbers. Thus, you can be reached via your home number even when you're on holiday. Furthermore, you can restrict the phone access in your home only with the press of a few buttons. Thus, you can set your phone off in three different modes; the emergency-only, local-calls only and regular calls only.