Limited-time offer; subject to change. Plus taxes and fees. Device Connection Charge ($25 for voice, and $5 for other lines) due at sale. Partial minutes/megabytes rounded up. Full speeds available up to data allotment, including tethering; then slowed to up to 2G speeds for balance of service period. Certain uses, e.g., some speed test apps, may count against high-speed data allotment or have speeds reduced after allotment reached. Mobile Internet provides data only; does not include voice, messaging, or Wi-Fi services. Not eligible for AutoPay discount or Kickback. Capable device required for some features. U.S. roaming and on-network data allotments differ; see selected service for details. Unlimited talk & text features for direct communications between 2 people; others (e.g., conference, chat lines, iMessage) may cost extra. Domestic use only; additional charges apply for international use, where available. Features available until 30th day; if sufficient balance, services automatically renew at expiration. If balance is insufficient to renew all lines on your account for 120 days, all lines will be suspended for 30 days. If you have an account balance, all lines will convert to Pay As You Go for 30 day increments with $3/mo. for 30 voice min./SMS messages. If funds available, additional minutes/messages @ $0.10/minute or message. After your account balance is depleted, then account is suspended. When you switch between plan options or renew a monthly plan, features or credits associated with your prior plan option will no longer be available, and you are not able to switch back to some plan options. Some plan options will not allow early renewal or permit use of features after included amounts are depleted. If you transfer your number to another carrier, account will be deactivated and no service will be available. Void if not activated within 90 days from purchase. No cash redemption value. Non-refundable. Not for extended international use; you must reside in the U.S. and primary usage must occur on our network. Video streams at up to 2.5Mbps with Data Maximizer. Optimization may affect speed of video downloads; does not apply to video uploads. For best performance, leave any video streaming applications at their default automatic resolution setting. You may deactivate Data Maximizer on some plans (e.g. T-Mobile Prepaid 10GB) to allow on-device video to stream at speeds that provide HD video capability (max 1080p). Some content providers may not stream their services in HD. HD Day Pass available for T-Mobile Prepaid Unlimited; buy and turn on. Capable device required to experience HD resolution. Music Streaming: Qualifying plan required. Licensed music streaming from included services does not count towards 4G LTE data allotment on T-Mobile’s network or in Canada/Mexico; music streamed using mobile hotspot (tethering) service might. Song downloads, video content, and non-music audio content excluded.