A five line mobile account and a hundred line one are not the same product at different volumes. Somewhere in between, the things that decide cost and sanity change completely: pricing stops being a published tariff, administration becomes a real job, and the questions that mattered at five lines stop mattering at all. Here is what actually changes, and roughly where.
The 30-second version
- Under about 20 lines you are buying a tariff. Above it you are negotiating an agreement.
- Pooled data stops being a nice extra and becomes essential as soon as usage varies across the team.
- Administration becomes the real cost, not the monthly line rate.
- Device management stops being optional once you cannot physically reach every handset.
- Mixed networks become normal, because one network never suits every site.
- Who you ring matters more than what you pay by the time you have fifty people depending on it.
On this page
Around 20 lines: pricing changes
Below roughly twenty lines you are choosing from published tariffs. Above it, pricing starts to be built for you.
That is the single biggest shift, and businesses often miss it because nobody announces it. They keep comparing advertised prices long after they have become large enough for those prices to be a starting point rather than the offer.
- The rate becomes negotiable, and so do the terms around it: how lines are added, what happens to leavers, whether the term resets.
- Data should be pooled from here, if it is not already. Individual bundles across twenty people guarantee some overpay while others overrun every month.
- Handset and SIM only can mix on one account, which is where it starts to pay. Some users need new phones, most do not.
Around 50 lines: administration changes
At fifty lines, somebody in your business has a job they did not have before, and usually nobody has acknowledged it.
New starters, leavers, lost handsets, upgrades, people going abroad, people disputing a charge. At five lines that is occasional. At fifty it is weekly, and it lands on an office manager or a finance person alongside everything else.
| What to insist on | Why it matters at this size |
|---|---|
| Same day provisioning | A new starter without a phone is a wasted day. Spare SIMs held locally solve it. |
| A named contact | Explaining your account from scratch to a queue, weekly, is the hidden cost nobody prices. |
| Usage visibility before the bill | Spotting an overrun mid month is cheap. Discovering it afterwards is not. |
| Clean leaver process | Suspend or reassign, not cancel and lose. Numbers are business assets. |
| Spend caps per line | One person roaming without thinking should not be a four figure surprise. |
Around 100 lines: control changes
Past a hundred lines you can no longer get your hands on every device, and the risk profile changes with it.
- Device management becomes essential. Lock, locate, wipe, and push settings without touching the handset. Our guide to MDM for business phones covers the detail.
- Data on devices becomes a governance question. Customer records on a hundred phones is a different conversation from five.
- Policy has to be written down. Not for bureaucracy, but because at this scale "we tell people" stops being true. Our mobile policy checklist is a starting point.
- Reporting matters. Who is using what, which cost centre, which site. Without it you cannot manage the spend at all.
How pricing is actually negotiated
Being straight about this is more useful than pretending there is a rate card.
At scale, price is built from volume, the mix of tariffs, the term, how much data you genuinely consume and how much work your account creates. Two businesses with the same number of lines can land in quite different places, and neither is being treated unfairly.
What improves your position:
- Knowing your actual usage, not your allowances. Paying for 500GB and using 90GB is a negotiating position you are not using.
- Consolidating. Lines scattered across three providers and a few personal accounts are worth less than the same lines on one agreement.
- Being clear about growth. A credible plan to add thirty lines is worth something now.
- Timing. Renewing from a position of three months' notice is different from renewing the week it expires.
The mistakes that scale badly
- Lines in employees' own names. Fine at two people, a serious problem at fifty, because those numbers are not yours. Covered in who owns the number when an employee leaves.
- Everyone on one network because head office has good signal. Across many sites that guarantees some of your team is on the wrong one daily.
- Per-line data bundles. At scale this is simply a worse way to buy the same gigabytes.
- No leaver process. Lines quietly billing for people who left months ago is one of the most common things we find on a large account.
- Term resets nobody noticed. Adding lines through the year can extend commitments on an account you thought was ending.
Running more lines than you can keep track of?
Send us a recent bill. We will tell you what you are paying for that nobody uses, which lines belong to people who have left, and what the account should look like at your size. No obligation either way.