“Golden Roaming” Service

This Offer is valid from 30 September 2025 until further notice, both dates inclusive (the “Promotion Period”).

To enjoy the Offer, you must subscribe to either:

• a designated 1O1O/csl 5G mobile service plan and subscribe to one of our Data Roaming Pass Monthly Packages or purchase our Pre-purchase Roaming Pass Packages or
• a designated 1O1O/csl 5G mobile service plan that comes with roaming data entitlement in multiple destinations, including but not limited to China-Hong Kong-Macau, Go!Chill, Asia Pacific 5G Service Plan, 1O1O C-level 5G Prestige Service Plan and Global 5G plan.

The mobile network operators participating in this partnership (the “Partnership Networks”) are listed in alphabetical order below as of 30 September 2025:

• Advanced Info Service PLC, AIS (Thailand)
• China United Network Communications Group Co., Ltd, China Unicom (Mainland China)
• CTM/Companhia de Telecomunicações de Macau, CTM (Macao)
• Globe Telecom Inc. (Philippine)
• KDDI Corporation (Japan)
• Maxis Broadband Sdn. Bhd. (Malaysia)
• SK Telecom Co., Ltd (South Korea)
• Softbank Corp. (Japan)
• Taiwan Mobile Co. Ltd (China Taiwan)

This list of partners may subject to change without prior notice.

This Offer will be available to you once you roam to the Partnership Networks with our roaming pass activated.

This Offer includes access to the Partnership Networks’ golden spectrum bands, specifically the 3.3GHz, 3.5GHz, and 4.9GHz frequency bands (“Golden Spectrum”), where such frequencies are deployed by the respective Partnership Networks and technically available. CSL shall use its best efforts to facilitate and enable such access for you; however, access is provided on a best-effort basis and may not be guaranteed to be available at all times or in all locations.

CSL provides no warranty, representation, or guarantee, whether express or implied, regarding the availability, performance, or quality of Golden Spectrum access. Golden Spectrum access is provided strictly on a best-effort basis and may not be available at all times or in all locations. All Golden Spectrum benefits are subject to the Partner Network’s policies, deployment and management, and may be subject to fair usage and resource allocation requirements.

For more details on our Data Roaming Pass Monthly Packages and Pre-purchase Roaming Pass Packages, please visit https://www.hkcsl.com/tc/data-roaming-pass/ .

Network access for roaming users, including Golden Spectrum access, will be managed according to the fair usage policies and real-time network conditions, balancing resource allocation of the Partnership Networks to safeguard service quality for all users. Temporary adjustments to service levels, including Golden Spectrum availability, may be made to maintain stability and efficiency.

Except as required by law, we assume no liability for interruptions or reductions in service quality resulting from circumstances beyond reasonable control. Every reasonable effort will be made to maintain network stability and to address any service issues promptly.

The Offers are subject to further terms and conditions. For details, please visit https://www.1010.com.hk/tc/data_roaming_day_pass orhttps://www.hkcsl.com/tc/data-roaming-pass/。