More lines equals
more savings.

Unlimited data

per line
for 2+ lines
Plus taxes and fees
See Details

Save up to $200 on the latest 5G phones.

Limited time only!

See Details

Optimum Mobile is on the T-Mobile network

Stay connected in more places with the network that's leading in 5G coverage and speed
Optimum Mobile leverages T-Mobile 4G LTE and 5G networks. Leader in 5G coverage and speed based on Opensignal 5G User Experience Report January 2022. 5G capable device required. 5G not available in all areas or on all plans.


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$30/mo. pricing reflects per line charge for domestic talk, text and Unlimited data. Requires 2+ lines of service and is available only for Optimum/Suddenlink customers enrolled in Internet + Mobile Savings program. Autopay required. Customers must maintain active mobile and Internet services to qualify for savings. Other terms and conditions apply; visit to learn more.

1 GB, 3 GB & Unlimited & Unlimited Max plan details: AutoPay required. New Optimum Mobile lines only, cannot be applied to existing lines of service. Other monthly charges apply per line and may include $20 activation fee, roaming charges, taxes, government fees and other Optimum Mobile fees and surcharges (including USF fee). Pricing, offer and terms subject to change at any time. Offer only for Optimum (OPT)/Suddenlink (SDL) customers. Must maintain both Optimum Mobile and OPT/SDL accounts in good standing. Data options may be switched at any time during bill cycle. Downgrade limited to 1x per bill cycle and effective with following bill cycle. Upgrades effective immediately. International talk/text from U.S. and talk/text/data while traveling abroad not included.

**Quality of service (QoS): Optimum Mobile leverages T-Mobile 4G LTE and 5G networks to deliver nationwide network coverage. After reaching 1 GB or 3 GB data cap, data is reduced to 2G (128 Kbps) speeds for remainder of bill cycle. Additional data purchases available once 1 GB/3 GB data cap is reached. After reaching 20 GB (for Unlimited data plans) or 50 GB (for Unlimited Max data plans) data is reduced to 3G (512 Kbps) speeds for remainder of bill cycle. Subject to this QoS policy, tethering at 600 Kbps and video streaming at SD quality (about 480p), for by the Gig plans, and after 5 GB of tethered data usage for Unlimited Data plan. For Unlimited Max plan, speeds will be reduced to 3G (512 Kbps) after 15 GB of tethered data usage in a month for the remainder of the billing period, and streaming video will be at HD quality (720p). Domestic off-net (roaming) at 2G speeds. See our Broadband Disclosure for additional performance and network management details.

Other restrictions: Credit approval may be required. Offer subject to discontinuance at any time, not available everywhere or for all phones/networks, and may not be combined with any other Optimum Mobile offers. Other terms and conditions apply; see for plan details. All rights reserved. © 2022 CSC Holdings, LLC.