Field Trials are an integral part of the GCF. They have been included to ensure that there is confidence in the operation of Products in the operational network environment. Field Trials provide the possibility to verify interworking operation and may include new features in various operational environments from the point of view of the end user.
GCF Field Trial Qualified (FTQ) status is achieved by an Operator following their agreement to provide information and support to Manufacturer or Associate Manufacturer Members enabling the performance of Field Trials on their network infrastructure.
The list of GCF Field Trial Qualified (FTQ) networks that actively support GCF's field trial program is shown below:
| Operator | Certificate | Date of Qualification |
| Deutsche Telekom, Germany |
DT
|
6 June 2025 |
| MEO - Serviços de Comunicações e Multimédia, Portugal |
MEO
|
9 January 2026 |
| NTT DOCOMO, Japan |
NTT
|
31 March 2026 |
| Orange, France |
Orange
|
11 July 2025 |
| Telecom Italia, Italy |
TIM
|
18 July 2025 |
| Telefonica, Germany |
TF DE
|
27 February 2026 |
| Telefonica, UK |
TF UK
|
28 August 2025 |
| Telstra, Australia |
Telstra
|
3 October 2025 |
| Vodafone, Germany |
VF DE
|
10 February 2026 |
| Vodafone, Portugal |
VF PT
|
6 October 2025 |
Detailed information about the FTQ networks is available to manufacturers in the GCF Members portal.