What's the best antenna for my customers? Do all antennas work for all phones?
You can generally pick the best antenna for an installed phone, and usually for a transportable phone. That is also true with portables for which there is an installation kit. However, not all portable phones can connect to an extra antenna. It depends on your customer's phone model and the availability of a connector to mate up with an antenna.
There are many antennas you can choose from. They include stubby antennas that are perfect for travelling, 1/4 wave antennas your customer can use outside your vehicle, magnetic mount antennas for the top of the vehicle to small antennas that suction to the window. When your customer has a car kit, he/she can use antennas that mount on glass, roofs, bumpers and more.