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
