Antennas capable of picking up 535KHz to 1700KHz are very different than those intended for 700Mhz to 2600Mhz and 2.4GHz to 5.8GHz that cell phone antennas are

Antennas capable of picking up 535KHz to 1700KHz are very different than those intended for 700Mhz to 2600Mhz and 2.4GHz to 5.8GHz that cell phone antennas are intended to use today. Both FM and AM should require separate antennas in the phone, although maybe the one intended for cellular communications could be used for FM without failing to picture up anything at all. It would be surprising if someone could avoid a separate antenna for AM.