SIM contract deals, also known as SIM-only plans, offer flexibility and value by providing just the SIM card and service—without the added cost of a bundled phone. These deals are usually cheaper than traditional phone contracts because you only pay for your monthly network usage and not the cost of a new device[3].
Major carriers like T-Mobile, Verizon, AT&T, as well as smaller providers such as Mint Mobile, US Mobile, and Google Fi Wireless, provide a wide range of SIM-only options in 2025. Some example deals include:
- T-Mobile Essentials Saver: $50/month for 1 line with 50GB high-speed data and unlimited 3G hotspot access.
- Verizon Unlimited Welcome: $65/month for 1 line with unlimited 5G data and a three-year price guarantee.
- US Mobile Unlimited Flex: $17.50/month for 10GB of high-speed data and 5GB hotspot data.
- Mint Mobile 15GB: $20/month for 15GB of high-speed data with 10GB for hotspot use.
- TextNow Essential Data: Free plan with 350MB of data, unlimited talk/text, and no contracts.
Many networks offer special perks or incentives, such as free international calling, exclusive app deals, or streaming service access[1]. Contract lengths can vary; some SIM deals require 12-month commitments, while others are rolling monthly or even no-contract at all[3]. Price rises on SIM-only contracts are now required to be fixed in pounds and pence, making long-term costs clearer for consumers. Switching is also straightforward—text ‘PAC’ to 65075 to keep your number when you move providers[3].
For those who use little or no mobile data, ultra-low-cost SIM-only plans are available with just talk and text. For example, TextNow offers unlimited calls and texts for $0/month, supported by in-app ads and no long-term contracts[4]. There are also family plan options, where adding multiple lines reduces the per-line cost—particularly with the flagship unlimited plans from the largest carriers[6].
Ultimately, SIM contract deals are best suited to those who already own an unlocked phone and want to reduce their monthly expenses, or to keep their payment flexible, especially compared to more expensive pay-monthly deals bundled with new devices[3].
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