Business phone plans for 10 to 50 lines

Most businesses with ten or more phones are on a plan somebody picked years ago, often a rate built for five lines. We price your lines on T-Mobile for Business and AT&T Business at the same time and put both on one page. Sometimes the answer is to stay where you are, and we will tell you that too.

Published rates, per line

PlanPer lineNotes
T-Mobile CoreMobile
$21
6 lines $125/mo with AutoPay, 5GB hotspot, five-year price guarantee
T-Mobile ProMobile
$34
6 lines $200/mo, 200GB hotspot, five-year price guarantee
T-Mobile SuperMobile
$42
6 lines $250/mo, 300GB hotspot, T-Satellite with Starlink included
AT&T Business Advanced 3.0
$25
4 or more lines, includes a $15/mo online-only credit that requires a new line and a 36-month device installment
AT&T Business Standard 3.0
$30
4 or more lines, no device installment required

Carrier published pricing at the line counts shown, checked on the carriers' own plan pages on 11 October 2026. Taxes and fees are extra. Per-line rates change with line count, so we quote your exact number.

What changes at 10 lines and up

At this size the plan mix matters more than the headline rate. An office manager on Wi-Fi and a site supervisor who hotspots a laptop all day should not be on the same plan, and paying for the top tier across every line is the most common overspend we see.

From about 20 lines the price itself can move. Each carrier will quote against your real volume and term once the account is registered with its pricing desk. If you run more than one location, add the lines together first. Three shops with eight lines each is a 24-line account. How line count changes the price.

What it costs to use us

Nothing. The carrier bills you at carrier pricing, the same as if you went direct. The carrier pays us. What you get on top is one person who compares both networks, moves your numbers, sets up the phones and picks up when something goes wrong.

How switching works

You keep your phone numbers. From first call to fully switched is usually about three weeks. Moving your numbers takes a few days once they are released. We do the porting, activation and setup so nobody on your team loses a day. The full timeline.

We work with businesses across the northwest Chicago suburbs and nationwide. Schaumburg, Barrington, Palatine and nearby.

Questions from businesses this size

There is no single answer, because it depends on how much data each person uses and where they work. Office staff who sit on Wi-Fi all day rarely need more than an entry plan such as T-Mobile CoreMobile or AT&T Business Standard. Field staff, sales and anyone who hotspots a laptop usually belong on a higher tier. Most accounts of this size end up with a mix, and we price that mix on both carriers.

Under about 20 lines the published rate card is normally what you pay, and the work is picking the right plans. From roughly 20 lines the account can be registered with each carrier's pricing desk and quoted against your real volume and term. That registration does not happen by itself.

Yes. Your numbers move with you. Porting takes a few days once your current carrier releases them, and the whole switch usually takes about three weeks from first call to done.

No. The carrier bills you at carrier pricing and the carrier pays us. You get one person who prices both networks, runs the switch and answers when something goes wrong.

Get both carriers priced for your business

Email a photo or PDF of your current phone or internet bill to hello@photex.us and we will price it on T-Mobile and AT&T within one business day. Or call 847-991-9419.