Real UK SMS verification, from a real UK SIM.
No VoIP. No shared numbers. OTPs land on genuine EE, O2, Vodafone and Three SIMs — activated in minutes, from anywhere in the world.
No account tie-in required to browse pricing. Cancel any time.
Built on real infrastructure, not workarounds
Most "SMS verification" services are VoIP numbers wearing a UI. OSIM is the network itself.
A real, physical SIM
Every number runs on an actual UK SIM card, not a VoIP line — so it passes checks that block virtual numbers outright.
Not shared, not recycled mid-use
Your card is yours for the full validity window. No surprise re-assignment mid-verification.
High OTP success rate
Genuine network delivery means fewer dropped codes and fewer retries than app-based alternatives.
Fast turnaround
Most orders are active within minutes, with SMS visible in your dashboard as soon as they land.
Four steps, no waiting room
Purchase
Pick a plan and pay securely by card or crypto — no long forms.
Receive access
Your license key and assigned number, including the login URL, arrive by email within minutes.
Receive SMS
Give out your new UK number. Codes appear in the dashboard, and by email if forwarding is on.
Done
Verify as many accounts as you need within your validity window, then renew or let it lapse.
One key unlocks your whole dashboard
No app install, no separate login flow to configure — your license key is both your receipt and your access pass.
Purchase
Receive license key
Open URL
View SMS
Simple plans, real numbers
Every tier runs on the same genuine UK network SIMs. Scale up when you need more numbers.
1 Day
- 1 UK SIM number
- Unlimited SMS during validity
- Online SMS dashboard
- Email forwarding
2 Days
- 1 UK SIM number
- Unlimited SMS during validity
- Online SMS dashboard
- Email forwarding
7 Days
- 1 UK SIM number
- Unlimited SMS during validity
- Priority OTP delivery
- Email forwarding
30 Days
- 1 UK SIM number
- Unlimited SMS during validity
- Priority OTP delivery
- Dedicated support
- Email forwarding
Genuine UK mobile networks
Verify wherever OTPs are required
Everything you need, nothing you have to configure
Unlimited SMS
No per-message caps during your validity window.
Real SIM
Genuine network hardware behind every number.
Email forwarding
Get codes in your inbox as well as the dashboard.
Online SMS viewing
A live, searchable log of every message received.
Instant activation
Numbers go live within minutes of purchase.
Priority support
A real person to help with delivery issues, not a ticket queue.
How OSIM stacks up
| Capability | OSIM | Virtual Number | Disposable SMS |
|---|---|---|---|
| Real physical SIM | — | — | |
| Works where VoIP is blocked | — | Limited | |
| Reusable across services | Limited | — | |
| Unlimited SMS during validity | Limited | — | |
| Flexible validity (1–30 days) | Limited | — | |
| Dashboard + email forwarding | Limited |
Questions, answered
A real, physical UK SIM card on a genuine mobile network. Nothing is routed through VoIP or shared virtual numbers, which is why OTP delivery rates stay high on platforms that block virtual numbers outright.
EE, O2, Vodafone, Three and Lebara, depending on stock. Each listing shows its network before you buy.
Most orders are ready within minutes of payment. You will receive a license key and can start viewing incoming SMS immediately from your dashboard.
Yes. Each card can receive SMS from any service that sends to it, so you can verify multiple accounts on the same number within its validity window.
Pick 1 or 2 days for a single one-off verification, 7 days if you need the number to stay reachable for a short project, or 30 days for ongoing use across multiple accounts.
You can renew before expiry to keep the same number, or let it lapse and pick up a new card at any time.
Trusted by people who verify things for a living
“The only verification service that has never bounced on me — real network, real reliability.”
“The 7-day pass is perfect for short test cycles — no leftover subscription to remember to cancel.”
“I keep a UK number active no matter which country I am actually in. It just works.”
Your next verification is a minute away.
Pick a plan, get your key, start receiving real SMS on a real UK number.