Which signal boosters are legal and which are illegal?

All legal cell phone signal boosters are FCC certified, manufactured after March 14, 2014 FCC compliance date. After that date, those that are manufactured without certification are illegal and must not be used because they can damage the wireless network plus incur heavy liabilities for users due to their damaging effect. However, please note that even legal signal boosters must be registered by respective cellular Carrier prior use. All FCC certified cell phone signal booster kits we carry are certified by FCC and therefore legally allowed for use with all mobile service providers including Verizon Wireless, T-Mobile, AT&T Wireless and Sprint. SignalBooster.com is a retailer and reseller that sells only FCC Certified cell phone signal boosters. Choose suitable legal signal booster using easy selection tool provided below: