Will nighthawk m1 with portable antenna likely have better signal than new iPhone? Advice please!

I have started working from home whilst travelling internationally around Europe etc and want to be able to maximise my internet signal the best I can. Does anyone know if a nighthawk M1 with a portable external antenna is likely to have better signal than an iPhone 12? I don’t really want to waste my money if my phone can do the job in terms of signal strength.

Bonus question, any suggestion on the best antenna that is portable and can be taken away whilst travelling?

Thanks!