I travel a lot and having a constantly reliable Internet connection is high on my priority list. Tethering from my phone is often times spotty. Different carriers are good in some areas and poor in others. To further complicate things, sometimes even a good connection can randomly hike packet loss rates and response times.
I'm searching for a solution. Something with much more reliability and consistency to tether my laptop to. I'm willing to pay for multiple carriers. I figure I can set something up with multiple sims that supports multipath tcp and then use a VPN connection to a AWS EC2 instance I setup and control.
So what I'm looking for is a dual active sim device that supports simultaneous LTE on both sims. So the first part of the question is what hardware device supports this?
According to Wikipedia there's a multipath TCP networking layer for Android. Is this standard in the latest version of Android or is this something I have to manually install?
I figure Android is a good way to accomplish this goal, but in the event that the hardware just isn't available, is there a non-Android solution that would accomplish the same thing while being as portable as a phone? I've seen professional units that accomplish this but they're bulky and have external power requirements that wouldn't fit in my pocket.