Yes, cell phones use microwaves to communicate wirelessly. The technology used in cell phones is known as cellular communication or mobile telephony, and it relies on microwave signals to transmit and receive voice calls, text messages, and data.
Cell phones communicate with cellular base stations or towers, which are strategically placed throughout an area to provide coverage. When you make a call or send a message, your cell phone converts the audio or text into a microwave signal, which is then transmitted through the air to the nearest base station.
The base station receives the microwave signal, decodes it, and relays the call or message to its intended destination, such as another cell phone or a landline telephone. Similarly, when you receive a call or message, your phone receives the microwave signal from the base station and converts it back into audio or text that you can understand.
Microwaves are used for cellular communication because they have several desirable properties. They can travel long distances without significant loss of signal strength, they can penetrate buildings and other obstacles to some extent, and they can carry large amounts of information. These characteristics make microwaves well-suited for wireless communication, including cell phone networks.