Before you start

Passport for prepaid; cédula de identidad for postpaid and fixed services
An Ambato address for fibre installation
An unlocked or eSIM-capable handset
An Ecuadorian payment method for postpaid

Step-by-step

1
Buy a prepaid SIM in the first days
Claro and Movistar sell prepaid in the shopping centres and on the main avenues, registered against your passport. Data packages are inexpensive and cover the period before your cédula exists.
In personWho: YouDay 1
2
Buy from an operator store rather than informally
SIM registration is mandatory in Ecuador. Lines bought informally are frequently registered to a third party, leaving you unable to port or recover the number and attached to whatever it was previously used for.
In personWho: You
3
Switch to postpaid once you hold a cédula
Postpaid plans need an Ecuadorian identity document and a local payment method. They are cheaper per gigabyte and usually bundle regional roaming, which matters if you travel to Colombia or Peru.
In personWho: You
4
Check which fixed provider reaches the specific building
CNT, Claro and local independents have overlapping but not identical fibre footprints. In the valley floor the answer is usually good; on the hillside parishes it varies street by street. Ask the building administrator what is already installed rather than relying on a coverage map.
OnlineWho: You
5
Plan around power cuts if you work remotely
Ecuador's grid depends heavily on hydro and droughts have produced periods of scheduled load shedding. A UPS on the router and a mobile data plan on a second operator is the standard local defence. Unlike the coast a cut here is not a heat problem, but it is dark and cold by seven and nothing in the building will heat.
Mobile appWho: You
6
Port your number rather than starting over
Ecuador operates number portability. Do not cancel the old line before the port completes — your number is tied to bank authentication and delivery apps.
OnlineWho: You

Documents you’ll need

Passport for prepaid
Cédula de identidad for postpaid and fixed services
Proof of Ambato address
Ecuadorian bank details or card

Things most newcomers don’t know

A compact valley city is easier to connect than either a hill capital or a strung-out coast.

Ambato's built-up area is small and largely on the valley floor, so fibre competition in the core is real and coverage is even. That is a better position than Quito's hillside neighbourhoods and far better than the Manabí beach towns, where fibre simply runs out. The caveat is the surrounding parishes climbing towards 3,000 metres and beyond — Quisapincha, Pilahuín, Santa Rosa — where both fixed and mobile coverage degrade quickly and where a rural property will not have the connection the city does.

Source: community-reported

Almost nothing here runs in English, and that includes your telecoms provider.

Contracts, call centres, technician visits and the permanencia clause are all in Spanish, and unlike Cuenca there is no expatriate services layer to interpret for you. That is not an obstacle so much as an accurate description: living in Ambato means dealing with Ecuadorian institutions on their own terms. Read the minimum-term clause before signing rather than after, because talking your way out of one will also be in Spanish.

Source: community-reported

SIM registration is mandatory, and an informally bought line is somebody else's line.

Every line in Ecuador is registered against an identity document. Lines sold outside operator channels are frequently registered to a third party, which leaves you unable to port the number, unable to recover it if the handset is lost, and attached to its previous history. Buying at an operator store takes ten extra minutes and removes the problem entirely.

Source: ARCOTEL

Dollar pricing makes telecoms costs genuinely comparable year to year.

In most of Latin America a plan quoted at a local-currency price is a moving target. In Ecuador the price is in dollars and stays put, which makes it possible to compare operators honestly and budget more than a few months ahead. It is a small thing that compounds across every recurring cost you have here.

Source: community-reported