Only and are partnering with major network providers worldwide on an exclusive basis to deliver a consistently high level of Golden Spectrum service, plus comprehensive roaming packages, to the benefit of travelling customers. Enjoy trouble-free ultra high-speed Internet access wherever you go!
1O1O and csl customers roaming in any of eight geographies - Mainland China, Macau, Japan, Thailand, the Philippines, South Korea, Taiwan and Malaysia - now get priority access to the Golden Spectrum and other network resources from local partner mobile operators. This enables customers to enjoy faster, more stable and smoother connectivity, as well as an improved overall network experience. Golden Spectrum refers to the mid-frequency band of the radiofrequency (RF) spectrum, which offers fast speeds, wide coverage, stronger penetration of buildings and the ability to handle high-speed data transmission demands such as video calling and streaming.
Roaming Zone
Mobile Network Operators Participating
Mainland China
China Unicom
Macau
CTM
Japan
KDDI and Softbank
Thailand
AIS
Philippines
Globe Telecom
South Korea
SK Telecom
Taiwan
Taiwan Mobile Co Ltd
Malaysia
Maxis
csl Mobile Limited is seeking to co-operate with yet more overseas network operators in order to provide an even better customer roaming experience.
This Offer is valid from 30 September 2025 until further notice, both dates inclusive (“Promotion Period”).
To enjoy the Offer, you must meet one of the following criteria:
Subscribe to a designated 1O1O or csl 5G mobile service plan and also subscribe to a Data Roaming Pass Monthly Package, Pre-purchase Roaming Pass Package, or Data Roaming Bundle; or
Subscribe to a designated 1O1O or csl 5G mobile service plan that already includes multiple roaming destinations (including but not limited to China-Hong Kong-Macau 5G Service Plan, Go!Chill Service Plan, Asia Pacific 5G Service Plan, 1O1O CxO 5G Prestige Service Plan, and Global 5G Service Plan).
The mobile network operators participating in Golden Roaming (“Partnership Networks”), as of 30 September 2025 and listed in alphabetical order, are as follows:
Advanced Info Service PLC, AIS (Thailand)
China United Network Communications Group Co., Ltd, China Unicom (Mainland China)
Companhia de Telecomunicações de Macau, CTM (Macao)
Globe Telecom Inc. (Philippines)
KDDI Corporation (Japan)
Maxis Broadband Sdn. Bhd. (Malaysia)
SK Telecom Co., Ltd (South Korea)
Softbank Corp. (Japan)
Taiwan Mobile Co. Ltd (Taiwan, China)
This list of Partnership Networks is subject to change without prior notice.
The Offer will be available once you activate a roaming pass and roam on a Partnership Network.
The Offer includes access to the golden spectrum bands (3.3GHz, 3.5GHz, and 4.9GHz) deployed and technically available on the Partnership Networks. CSL will use its best efforts to facilitate such access, but access is provided on a best-effort basis and is not guaranteed to be available at all times or locations.
Access to the golden spectrum is subject to the technical and operational capabilities, spectrum licensing, and network deployment status of each Partnership Network and may not be available in all areas. Customers must use a compatible 5G device that supports the relevant frequency bands. The quality and availability of the golden spectrum service may be affected by network congestion, local interference, maintenance, equipment limitations, force majeure, or other events beyond reasonable control.
CSL makes no express or implied warranty, representation, or guarantee regarding the availability, quality, or performance of golden spectrum access. Golden spectrum service is provided on a best-effort basis and may not be available at all times or locations. All golden spectrum benefits are subject to the management, policies, and fair resource allocation requirements of the Partnership Networks.
For details of Data Roaming Pass Monthly Packages, Pre-purchase Roaming Pass Packages, or Data Roaming Bundles, please visit https://1010.com.hk/data_roaming_day_pass.
Service availability is subject to the technical and operational capabilities of the Partnership Networks, including golden spectrum infrastructure. Service performance (including golden spectrum access) may be affected by network congestion, equipment failure, maintenance, force majeure, or other circumstances beyond the reasonable control of CSL and the Partnership Networks. No guarantee is provided regarding service performance under such circumstances.
Network access for roaming users (including golden spectrum access) will be managed according to fair usage policies and real-time network conditions to balance resource allocation and safeguard service quality for all users. Temporary adjustments to service levels (including golden spectrum availability) may be made to maintain network stability and efficiency.
Except as required by law, CSL assumes no liability for service interruptions or quality degradation resulting from circumstances beyond reasonable control. CSL will use all reasonable efforts to maintain network stability and address any service issues promptly.
CSL reserves the right to vary or cancel this Offer and/or amend these Terms & Conditions at any time without notice.
In the event of any discrepancy or inconsistency between the English and Chinese versions of these Terms & Conditions, the English version shall prevail. In the event of dispute, decisions made by CSL will be final and binding.
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are partnering with major network providers worldwide on an exclusive basis to deliver a consistently high level of Golden Spectrum service, plus comprehensive roaming packages, to the benefit of travelling customers. Enjoy trouble-free ultra high-speed Internet access wherever you go!
