Use a head-set (don't rap the cord around the antenna),
Use sum kind of clip to hold to ur dashboard,
Use an external antenna,
Use a permanent install car kit, (requires a external antenna),
Either of the above will improve ur signal and/or voice quality (I like
to keep a headset in the car, because some times my (cars) noise level,
its too high, and people have trouble hearing me.).
800 MHz Cellular, will almost all ways have better coverage - Will
work better, than PCS types (1900 MHz); Such as, Cengular, Sprint, others...),
Cengular is probably second, and Sprint is (third) closely
behind them...
Analog, often will sound better, but is almost, always, not available
- but, is not secure (Can be monitored more easily),
All carriers (AT&T (MCI), Dobsen, Cellular one, Verizon, Cengular,
Sprint, etc. -
All, are always, vary location dependent (In other words, Maybe
at ur home Verizon will be best, but AT&T on the commute to work, and
Cengular at work (for example. Werst case.). Hopefully, it's not
quite that bad; but, it can be.
For rural areas - Don't select the phone, from the an Internet lists
of least radiating phones, chose the higher ones (U need more RF
(Power) than city areas, do),