I've read about people using the Evevate 4G LTE hotspot and Cradlepoint devices as hotspots. Are there other devices this is compatible with? AT&T has a Unite, Unite Pro, Velocity, and Liberate. Maybe these devices tune some of the newer LTE bands? Here's the reason I ask, my iPad 5 gets 4-5 bars at my house and when I move my SIM to the Elevate, it only tunes 1-2 bars of signal. Anyone else using anything other than Elevate or Cradlepoint with their SIM?? I know an iPhone will work, but I'd like something where I can tether the signal without jailbreak.