A SIM swap moves a phone number, and with it every one-time code the customer receives. The agent can bar a lost or stolen SIM at once, guide self-service swaps approved from the existing device, and check for fraud signals. Moving the number to a new SIM by conversation is held for a trained person.
What is a SIM swap request, and who owns it?
Customers need a new SIM or eSIM when a phone is lost, stolen, damaged or replaced. The mobile operator moves the number to the new SIM, and the old one stops working. Fraudsters use the same process: they persuade the operator that they are the customer, take over the number, and receive the codes that protect bank and email accounts. The customer often notices only when their phone loses signal.
The operator's fraud or security team owns the SIM swap policy and verification standards. Retail stores and support teams carry it out. Customer support owns the conversation. The agent's role is protective and preparatory, the kind of restraint our guide to the AI support agent that knows when to say no treats as essential where an action is hard to undo.
What are the steps, and at what depth?
- Agent, depth 1: identifies the reason: lost, stolen, damaged, new device, moving to eSIM.
- Agent, depth 3: bars a lost or stolen SIM on request, after basic verification. Barring is protective and reversible, and it stops a thief using the number. The agent explains that the customer will lose service until the new SIM is active.
- Agent, depth 3: offers the self-service route where the customer still has the existing device: an approval in the operator's app on that device, which is the strongest evidence the request is genuine.
- Agent, depth 1: verifies to the swap standard where self-service is not possible: account security answers set in advance, a code to the account email, or an identity check in store. Personal details anyone could find are not enough.
- Agent, depth 1: checks fraud signals: contact details changed shortly before, a port-out request, a new delivery address for the SIM, urgency or pressure, a third party speaking for the customer, a different country.
- Agent, depth 2: drafts the swap request with the verification result and signals, for a trained person.
- Person, security-trained adviser: approves or declines the swap. Signals present means further checks, often in store.
- Agent, depth 3: confirms what happens next and sends a notice to the account email and any other registered contact that a swap was requested.
- Agent, depth 3: tells the customer to check their bank and email accounts if they suspect the old SIM was used by someone else.
| Step | The agent does | Depth | Stays with a person |
|---|---|---|---|
| Reason | Identifies why | 1 | Nothing |
| Bar | Bars lost or stolen SIM | 3 | Nothing |
| Self-service | Routes to existing-device approval | 3 | Nothing |
| Verify | Applies swap standard | 1 | In-store checks |
| Signals | Checks fraud signs | 1 | Nothing |
| Draft | Prepares the swap | 2 | Approval |
| Notify | Sends notices | 3 | Nothing |
| Advise | Explains account checks | 3 | Nothing |
Which controls matter, and what evidence does each leave?
The agent cannot move a number. Activating a new SIM against a number is outside its role unless the customer approved it from the existing device. Evidence: refused verdicts and the approval source for each swap.
Barring is allowed, unbarring is not. Reversing a bar on a reported lost SIM needs the same checks as a swap. Evidence: bar and unbar events with actors.
Verification is matched to impact. Evidence: the verification method recorded for each swap request.
Notices to other contacts. A fraudster cannot stop the real customer's email hearing about the swap. Evidence: notice records.
Signals recorded whatever the outcome. Evidence: signals stored on each request, feeding fraud intelligence.
What should you measure?
- Swaps through existing-device approval, against those needing a person.
- Fraudulent swaps found later, traced back through the record.
- Time to bar after a lost or stolen report.
- Legitimate customers delayed by checks, and for how long. Delays have a cost too; where your policy allows, handling goodwill gesture requests covers recognising long ones.
- Signals raised and how many cases proved fraudulent.
Where does it usually go wrong?
Helpfulness beats policy. The caller is upset, says they need their number for work, and knows the account holder's address and date of birth. Those facts are easy to find. Hold the standard.
eSIM moves bypass checks. Converting to eSIM in an app can be a swap in disguise. Apply the same standard.
Port-outs are treated separately. Moving the number to another operator achieves the same takeover. Apply the same checks, and treat a port-out alongside a cancellation as a strong signal; handling cancellation requests with an AI agent covers the cancellation side.
Customers who cannot reach a store are stuck. Older or disabled customers may need another strong route; see can an AI agent handle accessibility requests?
The agent looks people up online. Checking social media to confirm a caller's identity proves nothing and exposes data. Web content is external and cannot authorise a swap.
Where Pryme fits
In Pryme, barring a SIM is a depth 3 capability and moving a number is held unless the approval comes from the existing device as a sealed signal from the operator's systems. Anything the caller says is declared, and anything from the web is external, so neither can authorise a swap.
Questions people ask
Can the agent send the new SIM to a different address?
Only through the held route, because a new delivery address is itself a fraud signal. A person decides after further checks.
What if the customer's phone was stolen with the operator app on it?
The agent bars the SIM and the account sign-in, then routes the swap to a person, since the existing device can no longer be trusted.
Should the agent tell banks about a swap?
Some operators share swap signals with banks through formal arrangements. That is a system integration under your policy, not something the agent does in a conversation.