AT&T vs Optimum Mobile

By Rob Webber • Founder & Editor

Head-to-head comparison of plans, features, and pricing

AT&T

AT&T

AT&T network

$—/mo

0 plans available

Optimum Mobile

Optimum Mobile

T-Mobile network

$—/mo

0 plans available

Looking to switch carrier but not sure if AT&T or Optimum Mobile is better? Within this guide, you'll be able to compare AT&T and Optimum Mobile coverage, features, plans, and prices side-by-side, so you can decide which carrier offers the best deal.

AT&T vs Optimum Mobile: Coverage & Plan Comparison 2026

  1. 1. AT&T vs Optimum Mobile: Reviews
  2. 2. AT&T vs Optimum Mobile: Plans
  3. 3. AT&T vs Optimum Mobile: Coverage
  4. 4. AT&T vs Optimum Mobile: Features
  5. 5. Our Verdict
  6. 6. FAQ

AT&T vs Optimum Mobile: Reviews

AT&T See Deals → View Plans
Optimum Mobile
Our Rating:
3.2/5
See Deals → View Plans

Pros

  • ✓ T-Mobile 5G & 4G LTE network coverage
  • ✓ Bundled savings for Optimum Internet customers
  • ✓ No contract

Cons

  • ✗ Requires Optimum Internet
  • ✗ Limited availability
  • ✗ Mixed customer service

AT&T vs Optimum Mobile: Plans

AT&T Plans

Optimum Mobile Top Plan

Unlimited

$45/mo

Powered by T-Mobile

See at Optimum Mobile →

Optimum Mobile Plans

AT&T vs Optimum Mobile: Coverage

AT&T

AT&T is powered by AT&T 5G & 4G LTE wireless networks.

View AT&T coverage map →

Optimum Mobile

Optimum Mobile is powered by T-Mobile 5G & 4G LTE wireless networks.

View Optimum Mobile coverage map →

AT&T is powered by AT&T and Optimum Mobile is powered by T-Mobile. Coverage varies by location — check availability in your area.

AT&T vs Optimum Mobile: Features

Feature AT&T Optimum Mobile
Networks — —
Data Speed — —
3G Network — —
Mobile Hotspot — —
5G — —
VoLTE — —
WiFi Calling — —
Visual Voicemail — —
Bring Your Phone — —
Keep Your Number — —
Contract — —
Credit Check — —
Taxes Included — —
Multi-line Discounts — —
Multi-month Discounts — —
Money Back Guarantee — —
Customer Service — —
International Calls — —
International Roaming — —

Our Verdict

AT&T is better for budget-conscious users who want plans starting at $0/mo on the AT&T network. Optimum Mobile is better if you want plans on the T-Mobile network starting at $0/mo. Both carriers offer the same tower coverage as Big Wireless at a fraction of the price.

Who Should Choose AT&T

  • ✓ You want the AT&T network
  • ✓ Plans starting at $0/mo
  • ✓ 0 plan options to choose from
View AT&T Plans →

Who Should Choose Optimum Mobile

  • ✓ You want the T-Mobile network
  • ✓ Plans starting at $0/mo
  • ✓ 0 plan options to choose from
View Optimum Mobile Plans →

Why You Can Trust This Comparison

I've spent years helping people ditch overpriced phone plans by exposing hidden fees and carrier tricks. At MoneySavingPro, we go beyond the fine print, testing and comparing real-world network performance so you don't have to.

I've personally tested AT&T, Optimum Mobile, and other low-cost providers, comparing their speeds, coverage, and pricing to the Big 3. If there's a smarter way to save, you'll hear about it here first.

— Rob Webber, Founder & Editor

Compare AT&T vs Optimum Mobile — How Much Could You Save?

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Frequently Asked Questions

Is AT&T or Optimum Mobile cheaper?
AT&T is cheaper, with plans starting at $0/mo. Optimum Mobile starts at $0/mo.
Which network does AT&T use?
AT&T uses the AT&T network. You get the same coverage as AT&T customers at a lower price.
Which network does Optimum Mobile use?
Optimum Mobile uses the T-Mobile network. You get the same coverage as T-Mobile customers at a lower price.
Can I keep my phone number if I switch to AT&T or Optimum Mobile?
Yes. Both carriers support number porting. You can transfer your existing phone number in about 10-30 minutes during the sign-up process.
Do AT&T and Optimum Mobile offer 5G?
Most modern plans from both AT&T and Optimum Mobile include 5G access at no extra cost where the network supports it.