Band 4 cell phone signal boosters covering 1700/2100 MHz frequencies are listed below. They cover many other frequency bands in addition to band 4 spectrum. Read about other cellular frequencies of carriers in USA & Canada. If competitively priced installed kits listed below with cell signal booster and installation service bundle do not meet your requirements or you require site survey and custom installation quote, please request installation service for site survey, professional system design, and installation quote. Thank you.