The Customer Portal is a tool for managing and monitoring the services provided by Oni. Through this you can consult in total security, invoices, services usage, performance reports, open tickets, download relevant documentation, among others.

Customer Portal

Cloud portal

Customer Support

Customer Support

Working days from 09h to 19h, free calls from all national fixed networks and ONI mobile network, 30 cents/min (VAT included), from other mobile national networks.


Working days from 9h to 18h

Billing and Litigation

Tuesdays and Thursdays from 15h to 18h

Portability Announcement and Tariff Information

Helpline for activating or deactivating the portability announcement, to access tariff information and mobile customer support. 24 hours a day, 7 days a week. Free from Portugal, from abroad dial +351 928 519 999 (Free in the Eurotariff zone, paid in other zones according to the roaming tariff in force).

Roaming Support

(from abroad)

Available 24 hours a day. Free calls at the Eurotariff zone; paid on the remain zones according to the roaming price list.

Customer Ombudsman

Point of contact for Digital Services (Digital Single Act/DSA):

Central of Operational Management

Everyday 24 hours (free)

Informações adicionais

Poderá obter o seu Código de Validação de Portabilidade (CVP) através da sua Área de Cliente, por contacto telefónico através do 16500 ou por SMS para o número 928519786.


In this section, available for download, are the documents regarding the interface of networks specifications and IARC offers from Oni.

Oni Network – Documentation
IARC – Documentation


Browse the Special Services Tarifs.

Technological Evolution 3G to 4G/5G

ONI’s mobile internet services operate over MEO’s mobile network, the operator that will proceed with the gradual cease of 3G technology between September 4, 2023 and January 31, 2024, with the aim of strengthening the conditions of coverage, availability and quality associated with the latest generation mobile technologies throughout the national territory, through 4G and 5G networks.

We do not foresee a significant impact to our customers, as, according to our studies, 99% of our customers are already using 4G networks.

We have a transition plan for identified customers who will be users of “3G-only” equipment.

What will happen to the 3G network?

We reinforce our commitment to availability, quality and proximity with access to the most advanced technologies throughout the national territory, through 4G and 5G networks, with greater coverage, speed and capacity.

Therefore, in order to bring you the best service and the most innovative solutions, we will progressively discontinue 3G technology in voice and data services

Benefits of network evolution

With the move from 3G to 4G technology, customers can enjoy speeds up to 5x times faster, and even more with the move to 5G (up to 72x faster). The effective download and upload speed, at any given time, depends on multiple factors, including: the speeds supported by the equipment, coverage in that area or location, use inside buildings, the number of simultaneous users, the number of applications open on the device, the operating system, etc.

Main benefits of 4G and 5G network:

  • Better audio quality (HD – High Definition, EVS – Enhanced Voice Service)

  • Higher speeds
  • Lower latency

  • Greater autonomy, due to the lower battery consumption of your mobile equipment
  • Be able to fully use all the native features of the most advanced mobile phones

What happens to my phone and SIM card?

Cell phone or Mobile Router

Mobile equipment with 2G and 3G networks will continue to have access to the mobile network using 2G technology.

To a better experience when using voice and data services with 4G and 5G technologies, you must have a compatible mobile device.


SIM card

Our cards support this technological evolution of mobile networks

What happens to business solutions and applications that use the 3G network?

Business solutions

Considering this discontinuation and in case you have an IoT/M2M solution or another business solution, you should check if one of the 2G, 4G or 5G technologies is suitable for its operation. If so, you will only have to ensure the compatibility of the equipment and/or SIM cards with the necessary technologies. Otherwise, or if you need to use data transmission rates or unsupported features, please contact us.


APNs limited to 3G network

If your company uses an APN limited to the 3G network, we will update it to 4G/5G. If you need to use 4G/5G technologies, you must ensure that this change is accompanied by an equipment update, if these are limited to the 3G network

If you have any questions, contact your account manager or the ONI customer service line, through the number 16500

When will I stop having access to the 3G network?

The 3G network will be progressively disconnected throughout the national territory according to the map:

See the plan by county for more detail