dreaded dropped call. You keep talking and talking, and wait for the other end to respond, but are greeted with nothing but the sound of a dropped call. Some of us live in cell phone dead zones, so a signal booster might be your best options for regaining a bar or two of reception... iBooster This is specially designed for the iPhone. (but the company also makes different models for other smartphones) Very good at improving the voice and data performance; and even the signal strength in those weak areas where you may be. We like that you really will have fewer dropped calls and faster data rates. This is a type of cradle design, that includes an amplifier, battery charger and built-in antenna. You can even pair it via bluetooth for a hands free operation. zBoost We love the long range of 2,500 sq. ft; and that it supports multiple users at the same time. You can bring it to your home or office or even your personal workspace. It truly eliminates dead zones and is very easy to set up. The support of multiple frequencies is an added bonus. It's compatible with US carriers using the frequencies between 800 and 1900 MHz. You don't need a cradle attached to your phone to take advantage of less dropped calls. SpotWave z1900 The Spotwave signal amplifier can improve cell phone coverage in your home or office. Using a large external antenna and an indoor repeater, it boosts signals sent by both your phone and the cell tower. We like that, within about 30 feet of the coverage unit, you'll experience clearer conversations and less dropped calls. Includes network access unit, coverage unit, 35 ft. coax cable, AC adapter and all mounting hardware you may need. Requires a minimum of 10 ft. between units. Remember, due to the frequency limitation, it doesn't support ALLTEL, Nextel, US Cellular or Verizon Wireless networks.