Does Optimum Mobile use T-Mobile towers?

Yes. Optimum Mobile is an MVNO that runs on T-Mobile's network. The coverage map is identical — you access the same cell towers as T-Mobile customers.

How much cheaper is Optimum Mobile than T-Mobile?

T-Mobile's unlimited plan starts at $75/mo. Optimum Mobile's unlimited plan on the same T-Mobile towers costs $25/mo — a saving of $600 per year for the same signal.

Will my current phone work on Optimum Mobile?

If your phone is unlocked, it almost certainly will. Optimum Mobile runs on T-Mobile's GSM network. Most iPhones from 2017 onwards and Android phones from 2018 onwards are compatible. Check compatibility at Optimum Mobile's website before switching.

Can I keep my phone number when switching to Optimum Mobile?

Yes. Optimum Mobile supports number porting — you keep your existing number when you switch. The process takes minutes and your service is not interrupted.

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Optimum Mobile runs on Verizon's towers

Optimum Mobile = Verizon coverage (99% US population) — from $15/mo for Optimum internet subscribers

2 min read

Updated April 18, 2026

Written by

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Quick Summary

Optimum Mobile's coverage is Verizon's coverage — 99% of the US population, 98.6 Mbps average download speeds. Plans start at $15/mo for Optimum internet customers. Verizon's entry plan is $65/mo. Without an Optimum subscription, Visible offers unlimited Verizon 5G for $25/mo. Same towers, different bill.

Key Takeaways

Optimum Mobile runs on Verizon's full network — its coverage is identical to Verizon, reaching approximately 99% of the US population
Optimum Mobile starts at $15/mo for existing Optimum (Altice) internet customers — one of the cheapest Verizon-network options available to qualifying subscribers
Without an Optimum internet subscription, Visible ($25/mo) and Total by Verizon ($25/mo) provide the same Verizon network access without the bundling requirement
Optimum Mobile's Verizon network delivers real-world download speeds averaging 98.6 Mbps based on independent speed tests — among the fastest of any US network
Coverage outside Optimum's service footprint (primarily Northeast US) is fully covered by Verizon's national network

Optimum Mobile is powered by the T-Mobile 5G & 4G LTE wireless networks, offering the same coverage without the expensive price tag.

With an MVNO - Mobile Virtual Network Operator, you could save up to $600 a year on your cell phone bill, without sacrificing the features you love.

Below you'll find further information to help decide if Optimum Mobile has the right coverage for you.

Optimum Mobile 4G LTE network coverage

Optimum Mobile 4G LTE coverage map

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The FCC collects coverage data, which only offers an approximate indication and doesn't account for indoor coverage. The actual speed and performance can vary depending on your location and device. The reception you experience is influenced by local conditions and elements like natural and artificial physical features in your area.

Optimum Mobile operates on the T-Mobile network, so you'll have access to the same nationwide 4G LTE coverage, and 5G where it's available.

Even if you've had a plan with T-Mobile before it's always worth checking cell phone coverage in your area, which you can easily do with our ZIP code checker for availability at your address.

Compare network performance

NETWORK	ROOTMETRICS	OPENSIGNAL	OOKLA
Verizon network	95	9.8	74%
AT&T network	93	9.5	80%
T-Mobile network	87	88	79%

Sources: RootMetrics, OpenSignal, and Ookla.

Does Optimum Mobile have 5G?

Yes, Optimum Mobile 5G coverage is available with a 5G compatible device.

Optimum Mobile 5G coverage map

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Optimum Mobile cell phone plans

T-Mobile vs Optimum Mobile comparison

Keep your T-Mobile phone, number & coverage: Save $600 per year

Carrier	Network Coverage	4G/5G Data	Price	Annual Cost
T-Mobile	T-Mobile 4G & 5G	Unlimited	$75/mo	$900/yr
Optimum Mobile	T-Mobile 4G & 5G	3GB	$25/mo	$300/yr
		Savings	$50/mo	$600/yr

Optimum Mobile benefits

As an MVNO, Optimum Mobile can offer many benefits compared to plans with the three major networks;

Lower prices: without hundreds of physical stores and sales staff they can pass on the low-costs to you. With possible savings of up to $600 a year.
Flexible plans: you won't feel stuck paying for features you don't need, you can customize your plan to suit you.
Keep your phone and number: pocket the savings from not upgrading to the latest handset and bring your own phone. You can also easily port your number across.
Easy to switch: if you're keeping your own phone the switch over is simple and you'll be all set within a few days.
No commitment: there's no contracts, so you pay as you go. If you're not happy or you need to amend your plan you can do this at any time.

Optimum Mobile features

Network

AT&T

Data Speed

5G & 4G LTE

3G Network

GSM

Mobile Hotspot

Yes

Bring Your Phone

Yes

Keep Your Number

Yes

Credit Check

Customer Service

Mon-Fri 8am to 10pm / Sat-Sun 8am to 8pm

Money Back Guarantee

Yes

Contract

Prepaid

Taxes included

Varies by Location

VoLTE

Yes

WiFi Calling

Yes

Visual Voicemail

Yes

Multi-line Discounts

Multi-month Discounts

International Calls

Yes - As add-on

International Roaming

Yes

Optimum Mobile coverage FAQs

How good is Optimum Mobile coverage?

What towers does Optimum Mobile use?

Optimum Mobile is powered by the T-Mobile network.

Is Optimum Mobile as good as T-Mobile?

Low-cost carriers pass on the savings to you. Without the overheads of physical stores or expensive advertising campaigns you can halve your monthly cell phone bill. With Optimum Mobile you pay for what you need while still receiving nationwide 4G LTE coverage.

What phones can I use with Optimum Mobile?

Most unlocked phones are compatible with Optimum Mobile. They operate on the T-Mobile network.

Recap

Optimum Mobile makes it possible to get a cell phone plan on the T-Mobile network without the big ticket prices.

Offering the same nationwide coverage with 4G LTE and the 5G network, where it's available.

With MVNOs you'll get flexible plans with no contracts, so you're free to amend or cancel without any additional fees.

If you're not sure Optimum Mobile plans are right for you, there's a large selection of MVNOs across all networks you can compare to find your perfect low-cost plan.