eSIM for Peru

Three Perus share one country: the desert coast, the high sierra, and the Amazon east of it. Mobile data works well in the first, follows the valleys and towns in the second, and largely gives up in the third. Knowing which one you are standing in tells you more about your signal than any coverage claim, and an eSIM set up before you leave means you are at least sorted for the parts that do have towers.

Getting online when you land

Install the profile before you travel, while you are on home wifi, and keep the line switched off until arrival. Jorge Chávez in Lima is the entry point for most visitors, and the line usually registers while you are still walking toward baggage reclaim.

Do not wait until you are outside to sort this. Lima's airport sits in Callao rather than the neighbourhoods you are probably staying in, the drive is long, and having a ride app running with a fixed fare beats arranging one at the exit. If you are connecting straight through to Cusco, switch the line on during the layover instead; it will reconnect to the local network at the far end without you doing anything.

The networks you'll be on

Peru gives your plan more to work with than most countries in the region. Coverage can come through Movistar, Claro or Nextel. Movistar runs 3G and 4G/LTE; Claro and Nextel add 5G on top, which shows up in parts of the larger cities. Outside those cities, LTE is what you will be riding, and in the mountains and jungle towns 3G is common.

The practical version: in Lima, Arequipa and central Cusco your phone will feel entirely normal. In the Sacred Valley it will be slower but functional. Above the treeline or on a river, it will be nothing at all, and no network selection trick changes that.

Where coverage holds, and where it thins

Lima is comprehensively covered, from Miraflores and Barranco through the historic centre and out along the coast road. The Panamericana north and south of the capital keeps signal for long stretches, so the desert runs to Paracas, Huacachina, Nazca and up toward Trujillo are fine.

In the highlands, service concentrates in the towns. Cusco is well served, as are Urubamba, Pisac and Ollantaytambo in the Sacred Valley. The train down to Aguas Calientes loses and regains signal through the gorge, and Machu Picchu itself has coverage that is best described as unreliable and heavily contended: assume you cannot load your ticket at the gate and have it saved offline. The Inca Trail and the Salkantay route are offline hikes from the second morning onwards. Puno and the Titicaca shoreline hold up; the Uros and Amantaní islands are much weaker. Colca Canyon has service at Chivay and the popular viewpoints, less so on the descent. Huaraz is connected, the Cordillera Blanca trailheads above it are not.

The Amazon is the honest gap. Iquitos and Puerto Maldonado are functioning cities with functioning networks. Every lodge upriver from them, and the boat journey to reach it, should be treated as fully offline, which is generally the point of going.

What you'll actually use data for here

Timed entry is the big one. Machu Picchu tickets, circuit selections, bus queues at Aguas Calientes and train times all run to a schedule you need to be able to check and re check. Download the tickets rather than relying on opening an email at altitude.

Beyond that: ride apps in Lima and Arequipa, where they are the sane way to move around at night; translation for menus and for the Quechua place names that Spanish signage does not always explain; weather and road status, because a pass can close and a river trip can be rescheduled; and altitude apps or a simple search when you are trying to work out whether how you feel on day one in Cusco is normal. It usually is, but it is nice to check.

Before you fly

Set the eSIM up at home and confirm it activates, then leave your usual SIM in for bank verification messages. Make the travel line your data line so nothing routes over your home number by accident.

Download offline maps for Lima, Cusco and the Sacred Valley, plus any trekking area on your list. Save every ticket, permit and train booking as an image on the device itself. Bring a power bank sized for full days out, because cold and altitude both drain batteries faster than you expect, and a dead phone on the Ollantaytambo platform is a genuinely bad afternoon.