Complex sentence: As of October 2015, there were 58 wired broadband providers in the US that used data caps, among them major wireless cell phone providers such as Verizon Wireless and AT&T.
Split into simpler sentences: As of October 2015, there were 58 wired broadband providers in the US that used data caps. It is also common among major wireless cell phone providers, such as Verizon Wireless and AT&T.