K
Kelvin Wong
Telecom pricing researcher
Kelvin covers mobile plans, home broadband and MVNOs at DealSifu. He maintains the site's Hong Kong price database from providers' public tariff sheets, re-verifies plan terms before each comparison is published, and writes the step-by-step switching guides.
Coverage areas
- Mobile plan & SIM-only pricing
- Home broadband tariffs
- MVNO & sub-brand networks
- Number portability & switching
Latest articles (45)
- Switch Your HK Apple ID to the US App Store (2026): What You Gain, What You Lose, How to Pay
- SMS Verification Numbers from Hong Kong & China (2026): The Complete Field Guide
- How to Pay for US Subscriptions from Hong Kong (2026): Cards That Work, Workarounds and Real Costs
- SMS Verification for ChatGPT & Claude: Get a Foreign Number from Mainland China (2026)
- SMS Verification for ChatGPT & Claude: Get a Foreign Number from Hong Kong (2026)
- How to Register for Codex and Claude from Mainland China (2026)
- How to Register for Codex and Claude from Hong Kong (2026)
- How to Pay for Codex and Claude from Mainland China (2026)
- How to Pay for Codex and Claude from Hong Kong (2026)
- How to Avoid Getting Banned from ChatGPT, Codex and Claude (2026)
- How to Avoid Getting Banned from ChatGPT, Codex and Claude (2026, Mainland Guide)
- SoSIM vs Lucky SIM: Hong Kong’s Cheapest Prepaid & Monthly Plans Compared