Unused mobile lines: how to find and cancel them

Ask any IT manager how many mobile lines the company has. Most likely you will get a rough figure. Now ask how many of those lines have been used in the last three months. Usually the answer is silence.

Unused lines are one of the quietest costs on the telecom bill. They do not raise tickets or complaints: they simply bill their monthly fee, month after month.

Where unused lines come from

No company decides to pay for lines it does not use. They get there through processes that break somewhere:

• Leavers whose lines are never cancelled. The person leaves, returns the phone (or not), but nobody asks for the line to be cancelled.
• Finished projects and events. Lines set up for a project, a site or an event that has ended.
• Data lines for retired equipment. Routers, tablets, card terminals or IoT devices that were replaced while their SIM stayed active.
• Duplicates. Someone who changed line and kept the old one, or a number port that left an orphan line behind.
• Spare SIMs. Cards activated "just in case" that were never used.

How to find them

Look at usage, not just the fee

The clearest sign is a line that bills a fee but has no usage: no calls, no data, no messages for several months in a row. To see it you need the itemised invoice per line, not the summary.

One month without usage might be a holiday. Three months in a row rarely is.

Match the invoice against the inventory

Compare billed lines with your inventory of assigned lines. Those that appear on the invoice but have no assigned user are prime candidates for review.

Match the inventory against HR and Active Directory

If a line is assigned to someone who no longer appears as active in Active Directory or on the payroll, it is almost certainly surplus.

Watch out for data lines

Data lines tied to devices (not people) are the hardest to control, because nobody "misses" them. Pay special attention to equipment that has been replaced or retired.

Before cancelling: verify

Not every line without usage is surplus. Some have a legitimate purpose even if it does not look like it:

• Emergency or on-call lines that are only used occasionally.
• Alarms, lifts or telemetry systems that use very little.
• Lines for executives or sales staff with occasional use.

So the right process is: detect, verify with the owner and only then cancel. And record the decision, so you do not review the same line again next month.

Example

Acme Logistics reviews its invoice and finds a line with no usage for four months. The inventory shows it assigned to ana.ejemplo, who left the company six months ago. Her former manager confirms nobody uses the line, the cancellation is processed and the reason is recorded. Had the line been cancelled on her last day, the company would have saved six months of fees.

How to stop them coming back

Finding unused lines is half the job. The other half is making sure they do not pile up again:

• Link leavers to line cancellations. When someone leaves, reviewing their lines and devices should be part of the offboarding process.
• Assign every line to a person or a cost centre. A line without an owner is a line nobody will review.
• Review usage every month, not once a year. The sooner an unused line is caught, the less it costs.

How EPItoolbox does it

EPItoolbox keeps a single inventory of lines, devices and users across all your carriers, synchronised with your MDM and Active Directory. On top of that inventory, it:

• Flags lines that bill without usage and those with no assigned user.
• Detects lines assigned to people who are no longer active in Active Directory.
• Records every decision with a full audit trail: who reviewed the line, what was decided and when.

You can see how the inventory works on the platform page. And to go a step further, Telecom invoice audit explains how to review the rest of the invoice.