Buying a Mexican SIM Card

Hola, mis amigos.

I want to switch SIM cards in Mexico to avoid exorbitant roaming charges--and wondered the best place to buy one.

My iPhone is unlocked, but won't take an eSim card. I've switched out a SIM card before at the Paris airport, and it was fast and easy, so I bet I could do the same at the Mexico City airport TelCel shop on my way to Zihua. Is there any advantage to waiting until Zihua?

Has anyone done this? Would it be any cheaper in Zihua than it would be in Mexico City? Is TelCel the best bet?

Gracias in advance,

Bob

It is dirt cheap in Zihua. I don't know about the airport in Mexico City. I ask the attendant to install it and give them a nice tip. My fingers are way too big for those tiny things.

Telcel is ubiquitous in Mexico and has very inexpensive $50 peso weekly paquetes that work for me when I am there.