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No matter where your friends live*, keep in touch by using our SMS! Subscribe to one of our SMS packages and enjoy great savings and reliable delivery. Simply call our 24-hour Consumer Service Hotline: 25 123 123 to register.

Each SMS holds 160 English or 70 non English characters, including spaces and punctuation marks. If your message exceeds this limitation, it will be transmitted in form of multiple SMS and each SMS will be charged.

* Please refer to the destinations list on this page to see details of our coverage.



Inter-network SMS Package

Thereafter charge
per inter-network
$10 18 $0.5
$18 30 $0.5
$45 90 $0.5


Pay-as-you-go SMS charge#
SMS Charges (each SMS)
Intra-network (including Rechargeable SIM Card) $0.3
Local Inter-network $0.5
Overseas - other destinations $2

#Only applicable to designated tariff plans

How to send an SMS

To send SMS messages from your csl mobile handset, just follow these steps:

Dial + + country code + area code + mobile no

For long SMS messages, log in to “My Account”, try our “WebSMS” for even greater convenience! You can send messages to all your friends -even if they're not csl users and even if they're not in Hong Kong! Get full details by calling our csl customer service hotline on 25 123 123.

List of destinations

Regarding the destinations and operators covered by our International SMS service, please click here. The list is growing, so check back periodically!

Terms and Conditions

Intra-network SMS is text SMS sent within Hong Kong to 1O1O, csl and SUN Mobile customers and is subject to a monthly quota of 500 SMS units ("Quota"). Inter-network SMS is text SMS sent within Hong Kong to users of other Hong Kong networks. International SMS is text SMS sent within Hong Kong to users of overseas networks. Within the monthly Quota, you can enjoy sending any Inter-network SMS at $0.5 per SMS and International SMS at $2 per SMS. The Inter-network SMS and International SMS will be counted towards the Quota. If the usage exceeds the Quota, the Thereafter Charge is $0.3 per Intra-network SMS; $0.5 per Inter-network SMS; and $2 per International SMS.

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