I have used the MiFi jetpack extensively and find it to be great. I have an external antenna that I usually plug into it, as I am at remote places very often, and have limited service without the external antenna. I just leave it in the Jeep most of the time I am camping, plugged into the rear 12 volt
outlet for power. That way I can use it in the trailer when at the campsite, and if I go out sightseeing, the MiFi is with me in the Jeep and all I have to do is to grab the 'puter. It takes so little 12 volt
power you can leave it on 24/7 for days and days with no danger of discharging the Jeep battery.