Verify mobile numbers
SIM Check helps you confirm whether a customer’s mobile number is real, active, and genuinely belongs to them. It detects common fraud risks like SIM swaps, virtual numbers, or mismatched user details, adding an essential layer of security to your verification process.
It’s ideal for use in onboarding, transaction verification, account recovery, and compliance checks where phone numbers play a critical role in customer identity.
How it works
When a customer provides their mobile number, SIM Check runs a series of background checks. It connects to telecom and identity data providers to confirm if the number is active, registered, and whether it’s been recently ported or linked to suspicious activity.
It also helps detect virtual numbers often used for fraudulent signups or disposable usage.
Here’s an example of the output:
{
"mobile_number": "+447911123456",
"status": "active",
"sim_swap_detected": false,
"is_virtual": false,
"carrier": "Vodafone UK",
"ownership_verified": true,
"timestamp": "2025-04-14T13:58:00Z"
This lets you act instantly either to approve the number, request an alternative, or trigger enhanced checks based on risk signals.
Built for mobile-first platforms
SIM Check is designed for fintechs, lenders, legal firms, and claims companies where mobile verification plays a key role in trust and security. Whether you're issuing sensitive documents, protecting access to financial services, or triggering SMS authentication, verifying a mobile number is critical to ensuring it’s legitimate.
By catching bad actors early, you reduce fraud exposure and increase trust across your customer journey.
Mobile verification matters
Phone numbers are often used as a shortcut to trust. But without verifying them, you’re relying on data that can easily be spoofed, swapped, or faked.
SIM Check ensures the number is real, active, and trustworthy. It helps you confirm that a customer is who they say they are, and that communications are going to the right device.
It’s a lightweight but powerful addition to your onboarding and security stack.
Get started
Ready to make mobile numbers a secure part of your customer verification? SIM Check is the simple, fast, and reliable way to verify ownership and reduce risk. Compare packages or request a demo today.
Verify mobile numbers
SIM Check helps you confirm whether a customer’s mobile number is real, active, and genuinely belongs to them. It detects common fraud risks like SIM swaps, virtual numbers, or mismatched user details, adding an essential layer of security to your verification process.
It’s ideal for use in onboarding, transaction verification, account recovery, and compliance checks where phone numbers play a critical role in customer identity.
How it works
When a customer provides their mobile number, SIM Check runs a series of background checks. It connects to telecom and identity data providers to confirm if the number is active, registered, and whether it’s been recently ported or linked to suspicious activity.
It also helps detect virtual numbers often used for fraudulent signups or disposable usage.
Here’s an example of the output:
{
"mobile_number": "+447911123456",
"status": "active",
"sim_swap_detected": false,
"is_virtual": false,
"carrier": "Vodafone UK",
"ownership_verified": true,
"timestamp": "2025-04-14T13:58:00Z"
This lets you act instantly either to approve the number, request an alternative, or trigger enhanced checks based on risk signals.
Built for mobile-first platforms
SIM Check is designed for fintechs, lenders, legal firms, and claims companies where mobile verification plays a key role in trust and security. Whether you're issuing sensitive documents, protecting access to financial services, or triggering SMS authentication, verifying a mobile number is critical to ensuring it’s legitimate.
By catching bad actors early, you reduce fraud exposure and increase trust across your customer journey.
Mobile verification matters
Phone numbers are often used as a shortcut to trust. But without verifying them, you’re relying on data that can easily be spoofed, swapped, or faked.
SIM Check ensures the number is real, active, and trustworthy. It helps you confirm that a customer is who they say they are, and that communications are going to the right device.
It’s a lightweight but powerful addition to your onboarding and security stack.
Get started
Ready to make mobile numbers a secure part of your customer verification? SIM Check is the simple, fast, and reliable way to verify ownership and reduce risk. Compare packages or request a demo today.
