CSL Mobile Limited Customer Charter

Our Commitment

At 1O1O, operated by CSL Mobile Limited, we are dedicated to keeping you connected—anytime, anywhere. 
We pledge to deliver reliable, high-quality telecommunications services with speed, transparency, and care.


What You Can Expect f​rom Us

Network Reliability & Performance

We strive to maintain network availability of 99.9% uptime

We continuously invest in infrastructure to ensure strong, stable connectivity

We proactively monitor and resolve network issues

Timely Support & Responsiveness

Customer enquiries will be acknowledged immediately

Service requests and complaints will be resolved within 4 hours

We provide 24/7 customer service support



Clear & Transparent Communication

We provide accurate, up-to-date information on service status and outages

We will notify customers promptly about planned maintenance or disruptions

Billing and charges will be clear, fair, and easy to understand

Professional Customer Care

Every interaction will be handled with respect, empathy, and professionalism

Our staff are trained to provide helpful and efficient solutions

We will take ownership until your issue is resolved

Service Assurance & Accountability

If we do not meet our service standards, we will:

Investigate promptly

Provide updates

Offer remedies where applicable

Data Privacy & Security

We are committed to protecting your personal data and communication privacy

We comply with all relevant telecommunications and data protection regulations

Continuous Improvement

We actively gather customer feedback to improve our services

We innovate to bring you better speed, coverage, and value  

Your Role

To help us serve you better, please:

Provide accurate information when reporting issues

Use our official channels for service requests

Keep your account and contact details updated

Escalation & Contact

If your expectations are not met, 
please contact us:

1O1O Hotline

1O1O WhatsApp

2888 1010

(1O1O Customer service)

5915 1010

(1O1O Customer service)

2988 1010

(Sales Enquiry)

5910 1010

(Sales Enquiry)


Our Promise

We are committed to delivering a seamless and dependable communication experience. 
Your connection is our priority.