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  1. Optimum Mobile
  2. Phones & Network
  3. General

General

  • Dialing Plan Change Coming to 602 & 623 Area Codes in Arizona
  • New 274 Area Code in Wisconsin
  • Poor Audio on Phone Calls
  • No Service or Signal Issues
  • Internet and Data Issues
  • Why am I getting a “SIM is locked” message on my phone?
  • New 870 Area Code in Arkansas
  • How do I unlock my Optimum Mobile device?
  • New 227 Area Code in Maryland
  • New 329 Area Code in New York
  • New 369 Area Code for parts of California
  • New 861 Area Code in Illinois
  • New 363 Area Code for Nassau County
  • What are robocalls or spam calls?
  • How can I update my phone software and network settings?
  • What APN settings are needed with Optimum Mobile?
  • Do Apple Watch and other wearable devices work with Optimum Mobile?
  • What is the difference between a standard SIM vs. a micro SIM vs. a nano SIM vs. eSIM
Altice Mobile

Plans—

Our Plans
Affordable Connectivity Program
Savings Calculator
Add International

Phones—

All Phones
Bring Your Own Phone
Apple
Samsung
Motorola
Upgrade

Deals—

All Deals
Internet + Mobile Savings

Why Us—

Why Optimum Mobile

Coverage—

Nationwide Coverage

Mobile Support—

Mobile Support
Add a Line
Add a Phone
Articles
Chat With Us
Contact Us
Contáctenos

Company—

Altice USA
Optimum
Careers

Stores

MyMobile (My Account)

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