Picto thématique

Rule n° 140 - Telephone numbers can be enabled using the appropriate protocol.

In a mobile context, when this rule is respected, a simple click on a number opens the telephone functionalities of your mobile. It's practical! So, of course, in a desktop context, the disadvantage is that it opens up software like Skype. But there are tricks to avoid this.

#Accessibility #Mobile #Links #Development


  • Facilitate easier use of telephone numbers, particularly on mobile devices.


Tag phone numbers with an a link endowed with an href attribute of the type href="tel: + xx x xx xx xx xx".

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In the generated HTML code, check the markup of the telephone numbers in the form a href="tel: + xx x xx xx xx xx".

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Business application and benefits

The rules should be applied to your projects from the design phase through to post-implementation , and they should be understood by all professionals with web and customer experience (CX) responsibilities: from strategy to operations, marketers to project managers, and editorial to technical staff. The benefits of using this ruleset are numerous, including improving customer satisfaction, web performance, and e-commerce, and expanding your client base, while also decreasing your errors and costs.

Multidisciplinary verticles - accessiiblity, SEO, e-commerce, ecodesign etc..- starting from the foundational Opquast base.

The objective of these rules and the Opquast community mission is ‘making the web better’ for your customers and for everyone! Opquast rules cover the key major areas of risk that can negatively affect website users such as privacy, ecodesign, accessibility and security.

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