| Business mobile plans are the mobile accounts and numbers a company buys for its staff, together with the contract terms that decide who controls them. A business can own every handset in the building and still have no claim on the numbers its customers ring, because the account holder and the device owner are recorded separately. |
A salesperson hands in her notice. She has been with the firm six years and has given the same mobile number to about two hundred customers.
The number sits on a plan she pays for herself and claims back each month. On her last day it walks out of the building with her, along with every customer who has it saved under her name.
No technical fix exists on the day she resigns. The carrier acts for whoever is recorded as the account holder, and six years of expense claims give the business no standing.
Most firms watch the handset and ignore the connection behind it. The mobile contract gets read once, on the day it is signed, and then only when a bill jumps.
The account, the number and the plan are three separate things, and each one can sit in a different name. Most owners have never had reason to separate them, because a carrier sells all three as one product.
A lost number is the worst case, and the rarest. Most of the money goes out steadily on the monthly invoice, which is easier to price.
The figures below are illustrative. A Christchurch firm has twenty-two staff on mobiles, all sitting on the same monthly bundle.
Thirteen of them use under 3GB a month on a $65 plan that a $35 plan would cover. That is $30 a month each, or $4,680 a year.
Two staff travel to Australia three times a year with no roaming pack, and the excess comes to about $1,900 a year between them.
Then the salesperson leaves. Enquiries that would have reached her number are worth about $6,200 over the following year, and the firm has no way to get the number back.
So the running cost is around $6,600 a year, on top of a $6,200 event nobody budgeted for. None of it looks like a technology problem, because the mobile bill goes to accounts payable with the rest of the month’s invoices and never reaches anyone who would question it.
One boundary before we start. The handset and everything on it belong to how the mobile devices themselves are managed, which covers enrolment and lost-handset data. What follows is about the account behind it and the number attached to it.
What Are Business Mobile Plans?
Business mobile plans are the connectivity contracts a company holds with a carrier for its staff. Four things sit inside that phrase, and most firms buy all four as one line on a bill. They find out the four are separate the day somebody leaves.
The account is the commercial relationship, and it names who may authorise changes. A connection is one active service under that account, usually one SIM. SIM stands for subscriber identity module, the chip that tells the network which account a device belongs to.
Customers deal with the number, which the industry calls the MSISDN, short for Mobile Station International Subscriber Directory Number. The plan sets what the connection carries each month: data, minutes, texts and any add-ons. Only the number has value outside the business.
New Zealand has three mobile networks, One NZ, Spark and 2degrees, and a number of smaller providers that resell capacity on them. A reseller is a mobile virtual network operator, or MVNO, and a port is always handled by the provider you contract with.
What is the difference between a mobile account and a mobile number?
A mobile account is the contract a business holds with its carrier. A number is one asset sitting under it, and forty numbers can share a single account while each one moves separately.
This matters in two situations: a staff member leaves, or the business changes carrier. In both cases the carrier will only take instructions from the account holder. This is the same question a business faces over who is named on a company domain name, where a registrar acts only for the party on the record.
How do businesses usually pay for staff mobiles?
Three ways, and each one leaves the number in a different place. The business holds the account and pays the carrier, or it reimburses a personal bill, or it pays a flat allowance. Under the last two, the number is registered to the employee.
Who Owns a Business Mobile Number?
Whoever the carrier has recorded as the account holder owns it, and no side arrangement overrides that record. A business that reimburses an employee’s bill for six years has paid for the calls. The number stays with the employee.
Two hundred customers have that number stored in their phones and will keep dialling it. New Zealand numbers can also move between carriers, so an employee who leaves can carry it to their next job.
The Commerce Commission regulates local and mobile number portability under the Telecommunications Act, and its 2021 determination added a fraud and security section to the porting rules after porting was used to steal numbers. The same mechanism that lets a number follow a customer to a new provider lets a departing employee take one.
Can a company recover a mobile number registered to an employee?
Not without the employee’s cooperation. The person named on the account authorises any port, and a former staff member is under no obligation to help.
Some will agree, particularly where the departure is amicable and the number is obviously a work number. Ask in writing on the day the resignation arrives, before the last day.
Where they refuse, the practical answer is to publish a new number and accept the loss of the old one. That costs more than the paperwork would have.
How does mobile number porting work in New Zealand?
The new provider leads the process and the customer confirms it by text message. The New Zealand Telecommunications Forum, which writes the number portability rules the carriers follow, says the customer receives an SMS asking them to reply YES within two hours before the transfer proceeds.
That reply is a fraud control. Miss the two-hour window and the port fails, and the request has to be made again.
For a company account, the text goes to the handset carrying the number. Check who is holding it before a fleet move, because one unanswered message delays every number behind it.
Should a Business Pay for Staff Mobiles or Reimburse Them?
A business should hold the account and pay the carrier for any number a customer might ring. Reimbursement and allowances are reasonable for staff whose mobile is a convenience, and risky for anyone who gives their number to a client.
| Arrangement | Who holds the number | Where it fits |
|---|---|---|
| Company-paid account | The company | Anyone customer-facing, and any number printed on a vehicle, a quote or an email signature |
| Reimbursed personal bill | The employee | Office staff whose mobile is a convenience and is never given to clients |
| Flat allowance | The employee | Staff who want their own carrier and plan, where no customer relationship attaches to the number |
Most small firms sit on the middle row by default. The arrangement usually started when one salesperson asked to keep their own number, the claim went through payroll without comment, and every hire since has been handled the same way.
How does Inland Revenue treat a reimbursed mobile bill?
Part of a reimbursing payment can be treated as exempt income of the employee, and Inland Revenue sets out how much. Determination EE004, issued in March 2023 and applying from 1 April 2023, covers payments made for an employee’s use of personal telecommunications tools and usage plans in their employment.
It replaced determination EE003, so a policy written before April 2023 may still quote the older number. Ask your accountant which option in EE004 the business is using.
The tax treatment and the ownership question are unrelated. A reimbursement can be handled correctly and still leave a customer-facing number in a personal name.
How Do You Cut the Cost of Business Mobile Plans?
Cut the cost of business mobile plans by pulling twelve months of per-connection usage and putting each person on the plan their own figures justify. Most fleets pay for headroom on the majority of their connections while two or three people run over every month.
The headline bundle is sold on the heaviest user. A firm puts everyone on a plan sized for the person who streams on the road, and twenty other people carry that price.
Which usage figures should you ask the carrier for?
Ask for per-connection data and call usage by month for the last twelve months, exported as a spreadsheet. Any carrier account manager can produce that export if you ask for it.
Then put two questions to the data. Which connections have never passed half their allowance, and which have carried no traffic at all.
Cancelling the dead connections usually covers the cost of the review on its own. Fleets routinely carry live services belonging to people who left years ago, still billing against SIMs in a drawer.
Shared data pools hide the same problem. A pool that never runs dry was sized too generously for the team using it.
What Does an eSIM Change for a Business Mobile Fleet?
An eSIM lets a business activate a connection without shipping a physical card, so a new starter can be live in minutes. eSIM stands for embedded SIM, a chip built into the handset that a carrier profile is downloaded onto. An eSIM for business use is provisioned from the carrier portal, so nothing is couriered and a replacement handset can take the same number that afternoon.
Moving a number to a new handset needs the device identifier instead of a card swap. The Telecommunications Forum points to the ICCID, the long identity number stored on the SIM.
What new risk does an eSIM introduce?
The connection now lives entirely inside an online account, so anybody who can log in can move it. Protect the carrier portal the way you protect the banking login, with multi-factor authentication and a named list of who has access.
Keep that list to two people and review it when somebody changes role.
How Should a Business Handle Mobile Roaming for Staff Travel?
Buy a roaming pack before the trip and set a spend cap on the connection. International roaming charges start the moment a handset registers on a foreign network, and the bill arrives weeks later.
Two figures decide the pack: how many days away, and how much data the person gets through in a normal week. A single Australian trip with no pack can add several hundred dollars to one connection.
Ask the carrier for a daily-rate pack for short trips and a monthly add-on for anyone who travels most months. Set a hard spend cap as well, which most carriers will apply on request. Very few apply one unless asked.
Cruise ship and in-flight networks are billed as satellite and sit outside every roaming pack sold.
How Do You Keep Track of Company Mobile Numbers?
Keep a number register: one list of every number the company holds, who carries it and which account it sits under. Most firms have no such list, and the nearest thing to one is the carrier invoice.
An invoice shows numbers and charges without saying whose number is whose. That is how a leaver’s connection keeps billing for a year.
Six fields cover it: the number, the person, the cost centre, the account, the plan and the date issued. A spreadsheet does the job, provided one person owns it.
The handsets already belong in the company’s asset register, and the numbers should sit beside them. A number is easy to leave off, because nothing about it arrives in a box.
Two steps attach to the number itself. On a joiner, issue it from the company account and record it before the handset changes hands.
On a leaver, decide inside the notice period whether the number is reissued or parked. Parking a customer-facing number costs a few dollars a month and keeps the line reachable.
How should a shared site mobile be handled?
Put it on the company account with a named owner, and change the PIN whenever that person changes. A site mobile whose PIN three people know has no accountable owner and no reliable record of who used it.
Record it under the site with a person’s name against it. Ute phones and after-hours phones drift until nobody can say who had them last.
How Much Do Business Mobile Plans Cost to Manage?
Business mobile plans cost most firms $30 to $70 per connection a month, plus $6 to $12 per connection if a provider runs the fleet. The management line is the smaller of the two, and it funds the annual review that brings the first one down.
| What you are paying for | What it covers | Indicative range |
|---|---|---|
| Connections | A plan per staff member, sized against real usage | $30 to $70 per connection per month |
| Fleet management | Holding the account and running the annual plan review | $6 to $12 per connection per month |
| Initial tidy-up | Moving numbers into the company account and building the register | $600 to $1,200 once |
| Roaming packs | Daily or monthly add-ons bought before travel | $10 to $40 per traveller per trip |
| Handsets | Buying or leasing the devices themselves | $400 to $1,600 per handset |
| A customer-facing number lost with a leaver | Enquiries arriving at a number the business cannot reach | $3,000 to $8,000 for one salesperson |
The twenty-two-person firm was overspending $4,680 a year on bundles and about $1,900 on unplanned roaming, which is roughly $6,600 of recurring cost.
Fleet management for twenty-two connections at $9 each comes to about $2,400 a year, plus around $900 once to move the numbers and build the register.
So the second year nets out at about $4,200 in the firm’s favour, and the first year at about $3,300. The $6,200 exposure on the salesperson’s number goes away, because the number sits on the company account before she resigns.
What makes one mobile fleet cost more than another?
The number of travellers, the share of staff who are customer-facing, and whether the handsets are bought or leased. Twenty office staff on light plans cost less to run than eight technicians on data-heavy plans with vehicle mounts.
Handsets can be spread over a term through leasing the hardware, which suits a firm replacing a whole fleet in one year.
Ask any quote to separate the connection cost from the management fee. A single per-user price hides which half gets reviewed each year.
How Do You Take Back Control of Company Mobile Numbers?
Take back control by finding out whose name each number is in, then fixing the customer-facing ones first. The first four steps below cost nothing and need only the carrier portal and a spreadsheet.
- List every number the business pays for and name the person carrying each one. Most firms find at least one connection belonging to somebody who left.
- Check the account holder on each customer-facing number. Any number a customer already has saved belongs in the company name.
- Pull twelve months of per-connection usage and mark the connections that have never passed half their allowance.
- Confirm who can authorise a port on the account, and remove anybody who no longer needs to be there.
- Move the reimbursed numbers that matter into the company account, starting with the sales team.
- Buy roaming packs and set spend caps for the people who travel, well before the next trip.
Steps one to four take an afternoon and need no purchase order. Steps five and six need a conversation with the carrier and with the staff holding the numbers.
Does a business number that rings a mobile belong to the mobile plan?
No. A published business number that diverts to a handset is a call-routing decision made in the phone system, and the mobile plan only carries the last leg from the network to the device.
Firms running their calling through Microsoft Teams Phone can present the business number on outbound mobile calls, so the customer never sees a personal number.
Settle that at the phone system before buying plans around it. The two come from different suppliers and are reviewed in different years.
Book a Business Mobile Review
Exodesk has supported South Island businesses since 1989 and works with clients across Canterbury, Otago and Southland from offices in Christchurch and Dunedin. A mobile review names who holds each number today and returns a written plan with costs attached, so the numbers your customers ring stay with the business.
Contact us today to discuss how we can help your business or connect with us on LinkedIn to stay updated with more insights.
Frequently Asked Questions
What does BYOD mean when a company buys mobile connections?
BYOD stands for bring your own device, and in a mobile context it means staff use their own handsets and their own connections for work. The saving is real and the exposure sits in the number, because a BYOD connection is registered to the employee. Decide which roles can run that way and which cannot before the policy is written.
When is a phone allowance a reasonable alternative to a company mobile?
A flat allowance usually costs less on the monthly invoice. It also leaves the number in the employee’s name, so a business paying an allowance to a salesperson is funding an asset registered to somebody else. Weigh the monthly saving against what that number is worth to the business over five years.
How do we move a staff member’s mobile number onto the company account?
Ask the employee to authorise a transfer of the number to the business account with their current carrier. The carrier confirms the move by text to that number, and the person holding the handset has to reply. Do it while the employee is still with the business, because the transfer needs their cooperation.
Can an employee take their work phone number when they leave?
Yes, if the number is registered in their own name. A number issued from a company account cannot be ported out without the account holder authorising it, so an employee has no way to take that one. A work phone number in the employee’s own name is a different matter and cannot be recovered without their agreement.
How much do business mobile phone plans cost per staff member in New Zealand?
Most business connections run $30 to $70 a month depending on the data allowance and whether calls to Australia are included. Light office users sit at the bottom of that range and staff working from vehicles sit near the top. Roaming packs and handset repayments are charged on top of the plan.
What is the difference between a SIM and an eSIM?
A SIM is a removable card that identifies a connection to the mobile network, and an eSIM is that same identity downloaded onto a chip built into the handset. Because an eSIM cannot be taken out by hand, the carrier issues the profile again when the number moves to a new device.
Do we need mobile device management if we only have ten phones?
No, not for ten company handsets used lightly, though the answer changes the moment company email sits on them. Mobile device management enforces a passcode, separates work data from personal data and lets a lost handset be wiped. The exposure comes from the mailbox, and ten open ones are enough to matter. Ask the question again whenever a phone goes missing.
Who manages business mobile plans for companies in Christchurch and Dunedin?
Exodesk manages business mobile plans for firms across Canterbury, Otago and Southland from offices in Christchurch and Dunedin. The work covers holding the carrier account and sizing each plan against real usage, with the number register kept up to date. Exodesk has operated since 1989 and runs mobile alongside managed IT and phone systems.
Our staff prefer to use their own phones. Is that a problem?
Personal phones are only a problem for numbers customers use. Staff who never give a mobile number to a client can carry their own handset on a reimbursement with no risk to the business. Anyone whose number appears on a customer-facing document should be on a company connection.
What should be in a company mobile phone policy?
A company mobile phone policy should name the account holder, say which roles get a company connection, state what the business reimburses for personal plans, and set out what happens to a number when somebody leaves. Keep it to a page and attach it to the employment paperwork. Review it whenever the carrier contract renews.
Where should a business start if nobody knows whose name the numbers are in?
Start with the carrier invoice and mark every number a customer might dial. Check the account holder on those numbers first, because they carry the value worth protecting.
