I have a Smoothetalker booster with their cradle, but they have versions with interior antennas for multiple devices. If you’re using a hotspot with an antenna port you can hook the Smoothtalker booster directly to the device.
Smoothtalker - Leading Cell Phone Signal Booster Manufacturer Company
Smoothtalker is the #1 cell phone signal booster manufacturer in Canada, USA, EU, World. We offer mobile network, building, and vehicle signal boosters.
www.smoothtalker.com