






Get a NEW Unlimited line for $10/mo.: Get a new Unlimited line for 12 mos. for $10/mo. via monthly bill credits, plus taxes & fees. Credits start w/in 2 bill cycles. Number transfer w/in 14 days of line activation or device financing is required. Must maintain residential Optimum Internet svc & Unlimited Mobile plan & accts must remain in good standing w/ no past due or returned payments to receive credits. Autopay req’d. Optimum employees not eligible. Other terms and conditions apply; visit www.optimum.com/mobile/plan for plan details.
Optimum tip: Avoid a deposit fee by transferring your number to Optimum Mobile.
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Not sure if your phone's unlocked? Call your current carrier to check.
We can use your device's unique ID number — its IMEI — to check its compatibility with Optimum Mobile.
Choose a plan. Activate and install your SIM. Easily transfer your number.
With an eSIM-ready phone, you'll connect quicker, safer, and eliminate the hassle of moving a physical SIM card.
Optimum Mobile keeps you connected on America's largest 5G network.
When a phone is unlocked, it can be used across carriers. Check your phone with your current carrier, since they would have to unlock it for you.
Not necessarily.
You will need a SIM card to activate your phone, although depending on your phone it may be an eSIM or a physical SIM card. Your SIM card holds the information a carrier needs to tie a phone number to a mobile phone.
An eSIM is the latest type of SIM card, built directly into your phone. Contrast this to physical SIM cards, which need to be manually transferred between phones.
Activating a phone with eSIM is faster and safer, but your phone needs to be eSIM-compatible. With eSIM, you don't have to wait to activate your phone.
If you love your current phone, we want you to keep it. Learn more about bringing your own phone.