Terminal Testing

IMEI Database

Terminal Steering Group


The Terminal Steering Group (TSG) facilitates operator and vendor alignment to drive terminal* related matters for the benefit of the entire mobile ecosystem. It manages/ coordinates terminal capability requirements activities within GSMA and beyond. The group provides an environment for consensus building among members concerning the setting of frameworks and standards in respect of operational matters related to terminal matters.

The Terminal Steering Group also offers a forum for harmonising a GSMA view on terminal matters within and beyond the organisation.

Consultancy support to the Global Decimal Administrator, GDA (GSMA) in its IMEI Administration and Management functions. TSG is the TAC Allocation process owner for the GSMA IMEI database.

Key Topics

The Terminal Steering Group is currently working on the following topics:

  • Device field and lab test guidelines
  • High Definition Voice device technical requirements
  • IoT Device Connection Efficiency
  • IoT Standardised Diagnostic Logging
  • Mobile IoT device requirements and testing
  • NFC handset requirements and testing
  • Operator minimum acceptance values for device antenna performance
  • Recommendations for Wi-Fi device capabilities
  • Smartphone user experience
  • Standardised Diagnostic Logging
  • Technical Adaptation of Devices through late customisation

What the Terminal Steering Group Does

  • Facilitate operator and vendor alignment to drive terminal related matters for the benefit of the entire mobile ecosystem.
  • Improve the features and quality of mobile services through information gathering and sharing.
  • Drive mobile terminal capability requirements and develop and support key enablers
  • Formulate test cases, including field tests as required, to enhance usability, security and interoperability across terminals, servers and network infrastructures. Establish liaison with other relevant industry organisations to complement and contribute to terminal related initiatives while avoiding fragmentation and duplication.


The Terminal Steering Group have four face to face meetings a year with conference calls used to progress work between physical meetings

How to Get Involved

If you would like more information on any of the Terminal Steering Group activities, please contact Terminals@GSMA.com.  If you are interested in contributing and attending Terminal Steering Group then please contact Membership@gsma.com to become a GSMA Member.  Communications including liaison statements should be sent to Terminals@GSMA.com.

Douglas Roberts

Deputy Chair
Jian (Jim) Jun Wu
Samsung Electronics Co Ltd

Paul Gosden

Emma Wood