A few years ago I had a dual SIM bonding router which combined two 4g connections into a single faster connection. It worked ok but it lacked some features which I wanted, such as:

• A battery (it had to be plugged in to a wall or car all the time)
• eSIM support
• 5g support

I’m hoping that technology has advanced over the last few years and a better option now exists. I often travel by train, car, or bus through rural areas. I need reliable internet to do my work. It doesn’t even have to be that fast (15mb/s is plenty) but it needs to be reliable and not disconnect me constantly.

What sort of hardware would be the best option for this?