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LarkSim sells giffgaff physical SIM cards with real UK phone numbers, shipped domestically in China, for overseas website verification codes and account login.

The story

Screenshot of the LarkSim homepage
larksim.com, as visitors see it

LarkSim is an independent retailer of giffgaff physical SIM cards with real British phone numbers. The company sells two main products: self-service cards for users with existing top-up methods, and premium cards that include a £10 official credit voucher. All cards are shipped domestically from China with no international waiting times.

The service is designed for users who need real UK phone numbers for overseas platform verification, such as Codex and X (Twitter). Users register and manage their own accounts. The company provides Chinese-language activation guides, top-up assistance, number preservation guidance, roaming information, and support for verification code usage.

Cards support global roaming and work in China to receive SMS and calls with no fixed monthly fee. Numbers remain active as long as there is account activity every 6 months.

Signature features

  • Real UK phone number for SMS and calls
  • No fixed monthly fee, pay as you use
  • Global roaming support
  • Number preservation by maintaining activity every 6 months
  • Chinese-language activation and recharge guidance
  • Fast domestic shipping within 1-5 days
  • Premium card includes £10 official top-up voucher
  • User registers and manages own account

Pricing

Pricing model: Paid

giffgaff self-service card: $15 USD; giffgaff premium card with £10 credit: $43 USD; £10 official top-up voucher: $23 USD; US T-Mobile physical card: $28 USD (approximately ¥199); T-Mobile renewal top-up: ¥66–99 per month

LarkSim particulars

From
China
Website
larksim.com
Admired by
0 members

LarkSim metrics

Valuation of larksim.com: Ahrefs Domain Rating and Majestic link data, with the change since the last appraisal.

  • 28 Domain Rating no change since last check
  • 9 Trust Flow no change since last check
  • 27 Citation Flow no change since last check
  • 44 Referring domains no change since last check
  • 255 External backlinks no change since last check

Ahrefs Domain Rating valued 26 Oct 2026, reappraised 26 Oct 2026. Signature topic: Computers/Software/Operating Systems (8). Majestic valued 26 Oct 2026, reappraised 26 Oct 2026. Majestic appraises the link data. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.

LarkSim's domain pedigree

Trace the pedigree

Checked 26 Oct 2026, 11:50 UTC against the registry's public RDAP data.

  • Domain age 4 months
  • Registered
  • Expires
  • Registrar Spaceship, Inc.
  • DNSSEC Not signed

Full pedigree of larksim.com

Questions

Can this card be used in China?
Yes. giffgaff supports global roaming and can normally receive SMS and calls within mainland China with no monthly fee, making it convenient to keep a UK number active long-term. It is recommended to keep the card in a secondary slot and maintain at least one balance change every 6 months to keep the number active.
How long does shipping take after ordering?
Orders placed on working days are sent within 24 hours via SFExpress or China Post. Jiangsu, Zhejiang and Shanghai regions receive delivery in 1-2 days, other areas in 2-3 days, and remote areas may take 3-5 days. Real-time logistics tracking is available on the order page.
How long is the number valid after activation?
The number remains valid as long as there is at least one balance change every 6 months, such as sending an SMS, making a call, or topping up. If there is no activity for 6 consecutive months, giffgaff may reclaim the number.
How do I top up and check balance?
Check the current available top-up methods in the giffgaff official app or website. If payment fails, you can use an official top-up voucher. Balance can be checked on the app home page.

More on this profile

LarkSim has a free listing. The owner can unlock the full profile with a paid launch for $5:

  • Founder story (locked)
  • Milestones (locked)
  • Demo video (locked)
  • Dofollow website link (locked)

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