skip to main content
Close Icon We use cookies to improve your website experience.  To learn about our use of cookies and how you can manage your cookie settings, please see our Cookie Policy.  By continuing to use the website, you consent to our use of cookies.
Global Search Configuration


How consumers communicate has undergone a seismic shift over the past five years, and this shift will continue to impact the wider telecoms industry to 2021, driving change in CSPs' traffic and revenue mix, and service development and provisioning.


  • Given their network coverage and subscriber bases, CSPs are well positioned to participate in any adjacent market that requires connectivity, providing they are willing to diversify into new segments and new business models.
  • Mobile subscriptions will far exceed fixed subscriptions by 2021. Fixed–mobile substitution will continue to take hold in developed markets while emerging markets go mobile-first. Growth will be highest in Africa and parts of Asia. M2M/IoT will also drive growth in mobile subscriptions, as smart devices proliferate in multiple segments.
  • Globally, CSP fixed and mobile voice revenues are in decline. Call revenues are dropping as consumers adopt OTT VoIP and as CSPs respond by restructuring their tariffs to include unlimited voice minute packages.

Features and Benefits

  • Assesses the changing landscape for consumer and enterprise communications services over the coming years.
  • Advises on how to develop communications services and how best to offer them.

Key questions answered

  • What are the drivers for growth in mobile subscriptions to 2021, and for the decline in fixed subscriptions?
  • How will mobile voice services evolve over the next five years?

Table of contents


  • Introduction
  • Download 1: Global Communications Outlook: 2016–21

Recommended Articles


Have any questions? Speak to a Specialist

Europe, Middle East & Africa team: +44 7771 980316

Asia-Pacific team: +61 (0)3 960 16700

US team: +1 212-652-5335

Email us at

You can also contact your named/allocated Client Services Executive using their direct dial.
PR enquiries - Email us at

Contact marketing -

Already an Ovum client? Login to the Knowledge Center now