Bring your own phone
Number of devices
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.
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 the largest 5G network.
Optimum Mobile
plans start at $15/mo.
plans start at $15/mo.
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Unlimited talk & text
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1 GB premium data*
Frequently asked questions
It’s easy! Activate a new line on Optimum Mobile, bring your own phone and transfer your phone number from your previous carrier. Then, just keep your current phone active on your line for the first 90 days and you will get:
- $100 Optimum Prepaid Mastercard for every Unlimited Max line
- $50 Optimum Prepaid Mastercard for every Unlimited line
You may claim this offer for a maximum of 4 lines per account.
Only lines on Unlimited and Unlimited Max plans are eligible for this offer.
To qualify for this offer, you must transfer your number from another carrier, keep your current phone active on your line for the first 90 days and keep your account in good standing.
Starting on the 91st day, you may purchase a new phone from Optimum Mobile and still qualify for the virtual Optimum Prepaid Mastercard.
After you maintain the eligibility requirements for the first 90 days on your new line(s), you will receive an email from Optimum Mobile with instructions on how to activate and use your virtual prepaid card.
Once you’ve fulfilled your eligibility requirements, you can expect this email within about 3 business days.
Track your offer status on redeem.Optimum.com. Your email confirmation will include an offer code that you will enter along with your mobile account number to track your offer status.
Track your offer status on redeem.Optimum.com. Your email confirmation will include an offer code that you will enter along with your mobile account number to track your offer status.
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.
*Get a Prepaid Card (up to $400) with new BYOD activations. $100 when you BYOD and activate a new Unlimited Max line or $50 when you BYOD and activate a new Unlimited line, up to 4 BYOD activations. Number must be transferred to Optimum within 14 days. BYOD device must remain on Unlimited/Unlimited Max line and account must remain in good standing with no past due or returned payments throughout the first 90 days to receive Prepaid Card. Prepaid Card will be sent to customer virtually. Limit 1 per customer. Cannot be combined with other offers. Limited time offer. Virtual card is issued by Pathward®, N.A., Member FDIC, pursuant to license by Mastercard International Incorporated. Mastercard and the circles design are registered trademarks of Mastercard International Incorporated. No cash access or recurring payments. Can be used where Debit Mastercard is accepted online, for phone/mail orders, or in stores that accept mobile wallet. Valid for up to 12 months; unused funds will forfeit after the valid thru date. Terms and conditions apply.
Virtual card is issued by Pathward®, N.A., Member FDIC, pursuant to license by Mastercard International Incorporated. Mastercard and the circles design are registered trademarks of Mastercard International Incorporated. No cash access or recurring payments. Can be used where Debit Mastercard is accepted online, for phone/mail orders, or in stores that accept mobile wallet. Valid for up to 12 months; unused funds will forfeit after the valid thru date. Terms and conditions apply.