Before you start

An official identity document — passport, cédula or residency card. A prepaid line can no longer be activated without one being recorded
An unlocked handset, or one bought locally
For home fibre: proof of address and, at most providers, a cédula or passport plus a local payment method

Step-by-step

1
Buy the SIM in an operator store, not from a street vendor
Since the 2025 identity validation the line must be registered against a real document at activation. An operator store or authorised dealer does this properly and links the line to you; a pre-activated line is registered to someone else, which means you cannot port it, recover it or claim it if the handset is stolen.
In personWho: You, at a Claro, Altice or Viva storeSame daySIM cost is nominal; prepaid data bundles start in the low hundreds of pesos
2
Default to Claro if you will leave the city at all
Inside Santiago all three networks are adequate. The moment you drive to Jarabacoa, Constanza, Puerto Plata or into the Cordillera Central, Claro is the one that still has signal. Since the Cibao's best weekends are all outside the city, this matters more here than it would in the capital.
In personWho: YouSame day
3
Start prepaid, move to postpaid once you have a cédula
Prepaid is instant and needs only your document. Postpaid is cheaper per gigabyte and bundles handsets, but it is a credit product and providers generally want a cédula and sometimes proof of income. Prepaid on arrival, postpaid after the residency paperwork.
In personWho: YouPrepaid same day; postpaid once you hold a cédula
4
Know how to re-validate a suspended line
Each operator runs a self-service validation channel — Altice through its prepaid identity portal and *555, Claro through *456#, Viva through #414 and its stores. If a line stops working with no obvious cause, an identity-validation flag is the first thing to check, and re-validating is free.
Mobile appWho: YouMinutesFree
5
Order fibre, and ask what it is plugged into
Claro and Altice both sell fibre across central Santiago and the main residential sectors, usually bundled with television, with installation within a few days. What decides whether it is usable is not the speed but whether the router and the fibre terminal are on the building's inversor — most buildings put lights and sockets on the battery bank and forget the internet.
OnlineWho: You, with the providerA few days to installResidential fibre commonly RD$1,500–3,500 a month
6
Keep a mobile-data fallback if you work remotely
In EDENORTE territory this is not a luxury. A prepaid data SIM in a second phone or a small router, on a different operator from your fibre provider, is what everyone who works from home in Santiago ends up doing.
Mobile appWho: YouSame dayA few hundred pesos a month for a fallback bundle

Documents you’ll need

Passport, cédula or residency card — mandatory for line registration since 2025
Proof of address for fixed fibre
A local payment method for postpaid plans and fibre contracts

Things most newcomers don’t know

EDENORTE recorded 19.51 interruptions per client in June 2026 — the worst of the three Dominican distributors, against 15.56 for EDESUR and 9.33 for EDEESTE.

The country's electricity problem is real everywhere and worst here. For anyone working remotely that converts directly into a connectivity requirement: an inversor that carries the router and the ONT, and a mobile-data fallback on a different network. Someone comparing Santiago to Santo Domingo on cost alone is not seeing this line item.

Source: Superintendencia de Electricidad interruption statistics, June 2026

INDOTEL's Resolución 064-2025 made prepaid identity validation compulsory, with a 30 September 2025 deadline and suspension for lines that missed it.

The Dominican Republic used to be a place where you could buy an anonymous SIM from a stall. That is over. The practical consequence for a newcomer is that a line registered to someone else cannot be ported, recovered or replaced, and the operator will not discuss it with you. Buy in a store with your own document.

Source: INDOTEL — Resolución 064-2025 on prepaid line identity validation

Claro's advantage over Altice is not in the city — it is on the mountain roads.

The Cibao's real attraction is what surrounds it: Jarabacoa, Constanza, Pico Duarte, the north coast. Choosing an operator on an in-city speed test and then losing signal on every weekend you actually take is the standard Santiago mistake.

Source: Community-reported; INDOTEL operator coverage data (2026)

Common mistakes to avoid

Buying a pre-activated SIM from a street seller — since the 2025 purge it is registered to someone else and you cannot port or recover it.
Signing a fibre contract without checking whether the router and fibre terminal are on the building's inversor, in the country's worst distribution area.
Choosing an operator on in-city performance and losing coverage the first weekend in the mountains.
Working remotely without a mobile-data fallback on a second network.
Assuming postpaid is available on arrival — it is a credit product and generally wants a cédula.

Some of this may be out of date. Spotted something inaccurate? Help us keep it right for the next newcomer.

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