About Us

Who we are

The Company

Founded in 2007, doctorSIM was born out of sheer frustration! Our relationships with our phone network providers had been dominated by chaos and a lack of transparency.

doctorSIM’s aim is to provide clarity and return power to the consumer by helping them save on their phone bills via intelligent rate plan optimisation algorithms and other services such as permanent Phone Unlocking and Repair Your Phone. You should only pay for what you use, have the freedom to choose the network provider that best suits your needs and do it all according to your rules.

Our permanent phone unlocking services are available worldwide, with our savings comparison engine currently operational in Spain and Latin America.

The recommendations we make are totally impartial as the results displayed are those available on the Internet at any given time. So far, over 800,000 customers have stopped gifting money to their network provider thanks to doctorSIM.

The Team

The people behind doctorSIM are a solid team of experienced professionals with a number of successes (and failures, of course!) on their backs. All of them have started or co-founded one or several startups and are active entrepreneurs, mentors and speakers.

Executive Team

Our Philosophy

Our work ethic is based on 3 factors:

  • Create extremely useful services using the Internet as the main transactional medium.
  • Provide solutions to existing customer-related issues.
  • Create these solutions guaranteeing profitability and a sustainable business model.

At the forefront of our minds is a full commitment to producing services of the very highest quality as a roadmap to maximising customer satisfaction.


With doctorSIM’s ambitious nature and rapid progress, it did not take long before we gained the attention of various corporations and investment groups. doctorSIM is currently funded in part by Carty Venture Partners and a group of independent investors.

Carty Venture Partners is a multinational company specialising in innovative projects in the computing, telecommunications, Internet and consumer industries.

Our Home

We are a global company and as such, our office is the Internet, but occasionally rest our heads in a physical location. Headquartered in Madrid (Spain), we also have offices in Boston (USA), London (UK), Mexico City (Mexico) and Santiago (Chile).


1445 Cambridge St, Boston,
MA 02139, USA.

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Avda Brasil 17, P-17A.
28020 Madrid, España

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Avda de Providencia 229, Piso 2
Santiago de Chile, Chile

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Avenida Homero 527, Nº 701 A.
Col. Polanco, C.P. 11560 México D.F.

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86-90 Paul Street, 4th Floor.
London, EC2A 4NE

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doctorSIM operates in these other locations:

Argentina     Bolivia     Brazil     Canada     Chile     Colombia     Costa Rica     Ecuador     El Salvador     U.S.A.     Great Britain     Guatemala     Honduras     Ireland     Mexico     Nicaragua     Panama     Paraguay     Peru     Puerto Rico     Dominican Rep.     Uruguay     Venezuela    

doctorSIM in the Media

With a clear consumer focus and Robin Hood approach, we are pioneers in our field. But do not take our word for it, check out our press coverage! doctorSIM was nominated as one of the world's top 30 startups at LeWeb 2008 and top 100 ideas by Actualidad Económica (AE). We have also featured prominently at various consumer and internet trade shows and conferences.

doctorSIM Media Information