Always included
Unlimited talk and text
Flexibility to switch plans anytime
5G access at no additional cost**
International plans and travel passes available for purchase
Nationwide coverage
Extra support for phone setup
Bring your phone.
Keep your number.
Switch to Optimum Mobile today.
Check your device's compatibility with our service. Then, activate your phone with eSIM (if supported) or get a SIM card in the mail.
Optimum tip: Avoid a deposit fee by transferring your number to Optimum Mobile.
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Device compatibility
Enter your IMEI number.
Common questions
iPhone
Settings > General > About
Android
Settings > About Phone > Status
iPad
Settings > General > About
You may also be able to see the IMEI printed on the back of your iPad.
Each carrier has their own unlocking policy. Visit Optimum Support for a list of unlocking policies and contact info by carrier, including T-Mobile, AT&T, Verizon, and more.
For the most accurate information about unlocking your phone, reach out to your previous carrier directly.
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It's easy to keep your phone & number when you switch.
Have an unlocked phone
Not sure if your phone's unlocked? Call your current carrier to check.
Check your device's compatibility
We can use your device's unique ID number — its IMEI — to check its compatibility with Optimum Mobile.
Connect and keep your number.
Choose a plan. Activate and install your SIM. Easily transfer your number.
Why eSIM?
With an eSIM-ready phone, you'll connect quicker, safer, and eliminate the hassle of moving a physical SIM card.
Best 5G coverage & speed
Optimum Mobile keeps you connected on America's largest 5G network.
Buy 2, get your 3rd
Unlimited line FREE!
Mix & match Unlimited, Unlimited Max, and
Tablet Unlimited lines.
Savings via bill credits applied to the lowest priced line.
Frequently asked questions
To transfer your current mobile phone number, make sure it's still active. You will also need your account number from your previous carrier, and the PIN/password associated with it.
Once you have that information handy, you can give us a call, go online, or visit in-store to make the transfer.
Read through our DIY instructions for more tips on how to move your number over.
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.