Join Date: May 2003
Location: Redwood City, CA USA (SFO/SJC)
Programs: 1K 2010, 1P in 2011, Plat for 2012,13,14,15 & 2016. Gold in 17 & 18, Plat since
Posts: 8,826
I tried buying a Claro card at the food court, but they didn't have the nano simcard I needed (iPhone 5 or 6), only micro. I finally did find one elsewhere, but found it to be near-useless at the Machu Picchu end of the Sacred Valley. I ended up having to use AT&T's roaming plan to get coverage, and manually force it to Movistar, which had EXCELLENT coverage.
Long story short, if visiting Machu Picchu, go Movistar. Even elsewhere in the Sacred Valley Movistar was almost-always the stronger signal.