Before paying to keep a Hong Kong number, check whether you still need it. If you are emigrating, look through your banks, payment apps and other accounts: which can use your new number, an authenticator or another recovery method? Keep the +852 line for the accounts and people that still need it, rather than paying for a monthly data allowance you will not use.
For a holding SIM, compare the cash you must pay and the action that extends the number. The figures below are published prices checked on 2 October 2026; daily costs are arithmetic, not daily billing. New-SIM, delivery and port-in charges may be additional.
Shortlist: cash required, expiry and the catch
| Option and source | Payment / holding period | When it makes sense |
|---|---|---|
| Club SIM | Asia travel packs advertised from HK$15. Buy another service pack within 365 days of the previous purchase. At HK$15: about HK$0.041/day. | Low recurring spend if that pack is available to your account. Confirm the initial port-in purchase separately. |
| LuckySIM 3 years | HK$138 / 1,095 days; HK$0.126/day. | 30GB and 2,000 local minutes across the whole term. Fewer renewals, but still keep an expiry reminder. |
| LuckySIM annual voice | HK$60 / 365 days; HK$0.164/day. | 1,000 local minutes, no data. Lower upfront cost; renew every year. |
| SoSIM recharge | HK$200 extends 365 days; HK$500 extends 730 days, counted from recharge. | Money stays as spendable balance. Useful if visits use it; otherwise cash accumulates in the account. |
| csl Your Mobile | HK$198 / 80GB renewal pack; 1,096-day SIM extension from subscription. | More data. Check the admin-fee waiver; the terms allow termination after three months with no use and a balance of HK$0 or less. |
| 3HK DIY | Local 365-day data plans advertised from HK$120. | Compare for return-trip data. Confirm SIM expiry, voice/SMS and port-in costs for the actual order. |
Two expiry traps
Club SIM’s current clause 14.5 counts 365 days from the last pack purchase. Do not add a 30-day pack’s duration to that deadline or assume incoming texts extend it. Set a reminder before the deadline and check the new expiry in your account after buying.
SoSIM separates SIM validity from package validity. Its HK$65 annual voice pack is not documented as a standalone annual number extension. So+ at HK$60/360 days requires an eligible local data or Classroom Save package when first bought. The FAQ lists designated non-data purchases, such as certain vouchers and memberships, that can extend the SIM. It does not establish a rule that any data pack over HK$60 will do so. Check the resulting SIM expiry before relying on a purchase for renewal.
Choose for your actual use
- Mostly abroad: check receiving SMS in your destination and renewing from overseas before comparing small price differences.
- Occasional Hong Kong visits: a shared annual data pool may cover your trips. Check the allowance is for the whole term, not each month.
- One holiday: you may only need trip data. A data-only travel eSIM does not preserve an existing +852 number.
Before moving an existing number
Apply through the receiving carrier and keep the old line active until porting completes. OFCA says a number cannot be ported after the service has been terminated. Choose the port-in process: LuckySIM’s standard new-eSIM checkout assigns a new random number.