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SMS pricing and sender ID rules in Hong Kong SAR China

Indicative rates by operator and volume, sender ID registration, consent rules and quiet hours for business SMS to Hong Kong SAR China, from BroadNet's published rate card and regulatory research.

SMS from (per segment)
$0.0460
Operators (4 direct)
4
Sender ID registration
Free-form (OFCA scheme voluntary)
Regulator
OFCA

Short answer

Business SMS to Hong Kong SAR China starts at $0.0460 per message segment on BroadNet's published rate card, with lower rates from 100,000 messages a month. 4 mobile operators are covered, all on direct routes. Sender ID registration with OFCA typically takes Free-form (OFCA scheme voluntary).

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SMS list rates in Hong Kong SAR China

Indicative price per SMS segment by monthly volume tier, averaged across operators, from BroadNet's published rate card. The more you send, the lower the rate.

SMS list rates in Hong Kong SAR China
$0.0485
$0.0427
$0.0359
$0.0291
Up to 100,000100,000 to 1 million1 to 5 million5 million and more

Indicative list prices in USD before taxes and sender ID fees, reviewed September 24, 2026. Your quote confirms the final rate.

List rate by operator
OperatorUp to 100,000
CSL Mobile$0.0516
China Mobile HK$0.0494
3HK$0.0471
SmarTone$0.0460
Estimate your monthly cost

Rates by operator and volume tier

OperatorRouteUp to 100,000100,000 to 1 million1 to 5 million5 million and more
CSL MobileDirect$0.0516$0.0454$0.0382$0.0310
China Mobile HKDirect$0.0494$0.0435$0.0366$0.0296
3HKDirect$0.0471$0.0415$0.0348$0.0283
SmarToneDirect$0.0460$0.0405$0.0340$0.0276

USD per SMS segment, before taxes and sender ID fees. Rate card reviewed 24 September 2026.

Estimate your monthly costCheck your sender IDSender ID rules in Hong Kong

SMS rules in Hong Kong SAR China

Summary of Office of the Communications Authority (OFCA) and operator requirements. Last reviewed 1 October 2026; rules change, so we confirm them for your traffic during onboarding.

Sender ID formats

  • OFCA · CSL Mobile and China Mobile HK: Alphanumeric; registered IDs carry a # prefix

Sender ID registration

  • OFCA · CSL Mobile and China Mobile HK: Voluntary — organisations apply to OFCA's SMS Sender Registration Scheme directly; unregistered IDs are delivered without the #
  • Typical lead time: Free-form (OFCA scheme voluntary).

Consent (opt-in)

  • Verifiable opt-in required, with traffic categorised by use case at the time of registration. DLT-style template approval applies in several markets.

Opt-out

  • STOP keyword and DND-registry suppression applied automatically. Records retained per regulator requirements.

Quiet hours and send window

  • We have not found a regulator-published time-of-day window for promotional SMS in this market. Agree sending hours with the operator and schedule promotional sends for the recipient's local daytime; transactional traffic runs 24/7.

Regulator

  • Office of the Communications Authority (OFCA). Country code +852.

Sources

Send SMS to Hong Kong SAR China with one API

The same REST API and SMPP connection reach Hong Kong SAR China and every other market, with delivery receipts on one webhook and automatic fallback to WhatsApp or RCS where you enable it.

SMS API docsTalk to our team
curl -X POST https://api.broadnet.me/sms/sendSms \
  -H "Authorization: Bearer $BROADNET_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"senderId":"YourBrand","destinationNumber":"852…","message":"Hello from YourBrand","messageType":"TEXT"}'

SMS to Hong Kong SAR China: questions

How much does it cost to send an SMS to Hong Kong SAR China?

Indicative list rates start at $0.0460 per SMS segment, falling to about $0.0291 at 5 million messages a month. Prices exclude taxes and sender ID fees; your quote confirms the final rate.

Do I need to register a sender ID in Hong Kong SAR China?

No, registration is voluntary in Hong Kong. Organisations apply to OFCA's SMS Sender Registration Scheme directly; unregistered IDs are delivered without the "#". We confirm the current requirements during onboarding.

How long does sender ID registration take in Hong Kong SAR China?

There is no pre-registration step in Hong Kong, so there is no registration lead time. We confirm the current timeline for your sender ID during onboarding.

When can I send promotional SMS in Hong Kong SAR China?

There is no regulator-published window that we know of in Hong Kong. Agree sending hours with the operator and schedule promotional sends for the recipient's local daytime; transactional traffic runs 24/7.

Which mobile operators can I reach in Hong Kong SAR China?

CSL Mobile (direct route), China Mobile HK (direct route), 3HK (direct route), SmarTone (direct route).

What opt-out wording is required in Hong Kong SAR China?

STOP keyword and DND-registry suppression applied automatically. Records retained per regulator requirements.

SMS pricing in nearby markets

Data: BroadNet published rate card and regulatory research, reviewed 24 September 2026. URL: https://omnichannels.ai/sms-pricing/hong-kong/