I need a mobile plan that offers unlimited data and does not throttle speeds after a certain cap.

If by “unlimited” you mean no premium-data cap and no speed reduction after using a certain amount of data, there are a few strong U.S. options right now:

• T-Mobile Experience More / Experience Beyond — both include unlimited premium data, so T-Mobile says you won't be moved to a lower priority after hitting a usage threshold.
• AT&T Elite 2.0 — explicitly advertises unlimited data that won't slow down based on usage. AT&T Premium 2.0 also has unlimited high-speed data without a usage-based slowdown.
• Verizon Simplicity — Verizon's new 2026 flagship plan has no premium-data limit, meaning there isn't a usage threshold that moves you to lower priority.

My picks

Best overall: T-Mobile Experience More — unlimited premium data without a usage threshold, plus a strong 5G network.

Best if AT&T coverage is better where you live: AT&T Elite 2.0 — particularly clear about not slowing data based on usage.

Best Verizon option: Verizon Simplicity — no premium-data limit, though its hotspot allowance is separate from on-phone data.

One important distinction: “no throttle” doesn't necessarily mean unlimited maximum speed everywhere. Any carrier can experience temporary slowdowns when a cell site is congested; what you want to avoid is a plan that automatically deprioritizes you after 50GB/100GB/etc. T-Mobile's Experience plans and AT&T's Elite/Premium plans specifically address that issue.

If you tell me (1) how many lines, (2) your monthly budget, and (3) whether you need hotspot, I can narrow this down to the best 2–3 plans and current prices.

When looking for a mobile plan with unlimited data and no hard speed throttling (where your speed drops to an unusable crawl like 128 kbps or 3 mbps after a threshold), it helps to know how carriers play the wording game.

Most major carriers don't technically "throttle" anymore, but they do deprioritize —meaning if you pass a cap (e.g., 50GB to 100GB) and the cell tower is busy, your speeds might temporarily slow down. However, if the tower isn't congested, you keep running at full speed.

The top options that provide true uncapped data or very high high-speed thresholds without severe throttling include:

• Visible (+ Plan) : Runs on Verizon's network and offers truly unlimited data. Unlike standard budget carriers, Visible never throttles or hard-caps your data usage based on a monthly gigabyte limit, even if you use hundreds of gigabytes. On the base plan, you are always subject to deprioritization during congestion, but the Visible+ plan gives you 50GB of premium prioritized data first. Check out the details directly on Visible Mobile.
• T-Mobile (Go5G Next or Go5G Plus) : T-Mobile's top-tier postpaid plans feature unlimited premium high-speed data that is never subject to deprioritization or throttling, no matter how many gigabytes you use in a month. You can review these options on the T-Mobile Plans Page.
• US Mobile (Unlimited Premium) : US Mobile lets you pick your underlying network (Verizon, T-Mobile, or AT&T). Their Unlimited Premium plan offers a massive high-speed data allowance (usually around 100GB or uncapped depending on the specific network configuration) with high priority before any potential deprioritization kicks in. Learn more at US Mobile.
• Metro by T-Mobile (Top-Tier Unlimited) : Metro's highest-tier unlimited plan offers uncapped high-speed data on T-Mobile’s network without a hard throttling ceiling, though heavy users may notice deprioritization during peak local congestion. See current offers via Metro by T-Mobile.

To help narrow down the best choice, tell me:

• What network coverage (Verizon, AT&T, or T-Mobile) works best in your area?
• Do you also need a large or unlimited mobile hotspot allowance?

If you mean U.S. mobile service, there are plans that fit your requirement—but “unlimited” can be misleading. Some plans stop offering full-speed data after 50–100 GB or deprioritize you during congestion.

The strongest matches right now are:

• US Mobile Unlimited Premium — $32.50/mo monthly: explicitly offers uncapped unlimited data and unlimited priority data, with taxes and fees included.
• Verizon Unlimited Ultimate — about $95–$105/mo: unlimited premium-priority data, with no stated premium-data cutoff; considerably more expensive.
• T-Mobile Experience Beyond — about $100–$105/mo: unlimited priority data and unlimited hotspot, aimed at heavy users.
• AT&T Premium 2.0 — about $100/mo: unlimited priority data, plus a large hotspot allowance.

My first choice: US Mobile Unlimited Premium if you want genuinely uncapped phone data without paying Big Three prices. Its biggest advantage is that you can choose among three major networks.

Before I narrow this down, though, what country are you in (and, if the U.S., what city/state)? Coverage and the best carrier can vary substantially by location.

When looking for an unlimited plan, it helps to know the industry trick: true throttling (where a carrier intentionally drops your speed to a painful 2G/3G crawl like 512Kbps or less after a cap) is becoming less common on top-tier unlimited plans, but many carriers instead use deprioritization (slowing you down only if the local cell tower is congested).

If you want a plan with completely uncapped high-speed data that never hits a hard throttle limit , these options stand out:

• Visible (Visible+ Plan ): Powered by Verizon, Visible offers truly unlimited on-device data with no data caps and no hard throttles . On the Visible+ plan, you get 50GB of premium, prioritized data. After that, you aren't throttled—you may only be deprioritized if the specific tower you're on is congested. It also includes unlimited mobile hotspot (capped at 5Mbps).
• US Mobile (Unlimited Premium Plan ): US Mobile lets you choose your underlying network (Verizon, AT&T, or T-Mobile). Their top-tier Unlimited Premium plan features a massive high-speed data allowance (around 100GB to 200GB+ of priority data depending on the network chosen) before any potential deprioritization, and they do not hard-throttle your data speeds into an unusable state.
• T-Mobile (Go5G Next / Experience Beyond ): T-Mobile's premium postpaid plans feature completely unlimited premium smartphone data that is never subject to deprioritization or throttling, no matter how many hundreds of gigabytes you use in a billing cycle.
• Metro by T-Mobile (Top-Tier Unlimited ): Metro's highest-tier unlimited plan offers fully unlimited high-speed data on T-Mobile's network with no hard caps or speed throttling thresholds for on-device usage.

To help narrow down the ideal choice, let me know:

• Which network coverage (Verizon, AT&T, or T-Mobile) works best in your area?
• Do you also need unlimited high-speed mobile hotspot data, or is on-device data your only priority?

If your priority is unlimited on-device data with no intentional slowdown after a usage threshold, there’s a standout option right now:

Best fit: US Mobile Unlimited Premium

US Mobile currently advertises its Unlimited Premium plan as having uncapped unlimited data. Its current plan page lists unlimited priority data, and its help documentation says regular phone data remains high-speed regardless of usage.

• Regular phone data: Unlimited and uncapped/high-speed.
• No 100GB/200GB phone-data throttle: The current unthrottled Premium offering is specifically designed not to slow regular data after a usage threshold.
• Network choice: You can use US Mobile's nationwide networks, including Dark Star, Warp, and Light Speed.
• Priority: Unlimited Premium gets high-priority data on the supported networks.
• Hotspot is different: Hotspot data does have separate limits/throttling, so don't confuse "uncapped phone data" with uncapped tethering.
• Price: US Mobile currently advertises Unlimited Premium at $32.50/month monthly, or $24.92/month equivalent for the first year when paid annually (taxes/fees included on the advertised annual price).

One important caveat

"Never throttled" doesn't mean you'll always get the same speed. Network congestion, signal strength, tower capacity, and your device can still reduce speeds. US Mobile's terms explicitly distinguish those factors from an intentional usage-based throttle.

If you tell me (1) your approximate monthly data usage, (2) whether you need unlimited hotspot too, and (3) whether you're willing to use a prepaid/MVNO carrier, I can compare the best truly uncapped options from US Mobile, Verizon, AT&T, T-Mobile, and others and identify the cheapest one for you.

If you want an unlimited plan that completely avoids hard speed caps or drastic throttling, you need to look at plans offering unlimited on-device priority/high-speed data or true unthrottled data.

Note: Most carriers distinguish between throttling (a hard, intentional speed ceiling like 3G/2G speeds) and deprioritization (temporarily slowing down only if the local cell tower is heavily congested).

Top options for truly unthrottled or high-threshold unlimited data include:

• AT&T Unlimited Premium (Postpaid): This top-tier flagship plan offers fully unlimited, unrestricted, and unthrottled high-speed data on-device no matter how many gigabytes you consume in a single month. You also get a generous 60GB mobile hotspot allotment. Compare the details directly on AT&T Wireless.
• T-Mobile Experience Beyond (Postpaid): T-Mobile’s highest-tier unlimited plan features completely unlimited high-speed smartphone data that is never intentionally slowed based on how much you use, alongside a massive 250GB high-speed mobile hotspot allowance. Check current configurations on T-Mobile.
• Visible (by Verizon): Visible offers a uniquely straightforward approach with Visible Wireless . Their base plan is truly unlimited with no hard caps or data thresholds on device (though data can be dynamically deprioritized during heavy local congestion), and their upgraded Visible+ plan includes a substantial block of high-speed priority data before any potential management.
• US Mobile (Unlimited Premium on Dark Star): US Mobile lets you pick your underlying network (including AT&T via their "Dark Star" network). Their top-tier US Mobile unlimited plans on select network configurations provide unlimited high-speed premium data without throttling or hard cutoffs.

To help narrow down the best network and price for you, let me know:

• Which major network has the best coverage in your area (Verizon, AT&T, or T-Mobile)?
• Do you also need a mobile hotspot allowance for laptops or tablets?

Visible's base Visible Plan ($25/month) or Visible+ ($45/month), Metro by T-Mobile's unthrottled tiers , and Cricket Wireless's More plan ($60/month) offer truly unlimited on-device data with no hard speed caps or throttling after a usage limit, though they may experience network deprioritization (temporary slowing during heavy congestion) rather than an artificial speed reduction.

Key Differences to Keep in Mind

• Throttling vs. Deprioritization: True throttling puts a strict ceiling on your speeds (e.g., dropping you to painful 3G/2G or specific 1 Mbps limits). The plans listed above do not do this for on-device data . Instead, they use deprioritization , meaning if the cell tower is packed with people, your traffic might momentarily wait behind others if you've passed a threshold, but your speeds aren't artificially crippled.
• Mobile Hotspot vs. Phone Data: While on-phone data has no hard throttle, carriers almost always place a speed cap or gigabyte limit specifically on mobile hotspot usage to prevent home internet replacement . Visible caps hotspot at 5 Mbps to 10 Mbps depending on the plan, but it remains unlimited in volume.

If you tell me your current network preference (Verizon, AT&T, or T-Mobile) and approximate budget , I can recommend the best single option for your area.

Yes. If by “unlimited” you mean no fixed high-speed data bucket after which the carrier intentionally slows your phone data, there are a few good choices in the U.S. right now.

🥇 US Mobile Unlimited Premium

This is probably the closest match to exactly what you're asking for. US Mobile currently advertises “UNCAPPED UNLIMITED DATA” and unlimited priority data, with the monthly price listed at $32.50 or about $24.90/month when paid annually.

There is an important caveat: US Mobile's terms distinguish the current unthrottled promotional version from its standard plan, and network congestion can still affect actual speeds. Hotspot data also has separate limits.

🥈 Visible+

At $35/month, Visible+ gives unlimited premium data on Verizon's 5G Ultra Wideband network. On regular Verizon 5G/4G LTE, however, you get 50GB of premium data, after which your traffic may be slower than other traffic during congestion.

So it's excellent if you have strong 5G Ultra Wideband coverage, but it doesn't meet your requirement as cleanly everywhere.

🥉 T-Mobile Experience More

T-Mobile's Experience More is a more expensive option at around $85/month for one line, but it explicitly includes unlimited premium data that won't be deprioritized based on data usage. It also includes 60GB of high-speed hotspot data.

My recommendation: Start with US Mobile Unlimited Premium if keeping the bill low matters. If you'd rather have a straightforward carrier experience and Verizon coverage is strong where you live, Visible+ is compelling.

If you tell me (1) how many lines, (2) whether you need hotspot, and (3) your ZIP code, I can compare the best options for your exact situation and coverage.

Yes. If by “unlimited” you mean no fixed data cap after which your phone is slowed, there are several good options in the U.S. as of August 2026.

*Before applicable discounts/promotions; carrier pricing can change.

My picks

1. US Mobile Unlimited Premium — best value.
US Mobile explicitly describes this as “UNCAPPED UNLIMITED DATA” and says you will not be slowed regardless of how much data you use. It currently lists $32.50/month monthly, with lower effective pricing if you pay annually. You can also choose among its three underlying networks.

2. Visible+ — best if Verizon works well where you live.
Visible+ is $35/month with taxes and fees included and provides unlimited premium data on Verizon's 5G/4G networks, rather than giving you a 50GB/100GB premium-data bucket.

3. T-Mobile Experience plans — best if you prefer T-Mobile.
T-Mobile says its new Experience plans include unlimited premium data, meaning you aren't moved to a lower priority after using a certain number of gigabytes.

One important distinction: “no throttle” isn't necessarily the same as “always maximum speed.” A network can still slow everyone down temporarily when a cell tower is congested. What you want is a plan with unlimited premium/priority data, so your usage itself doesn't cause you to lose priority.

If you tell me (1) how many lines, (2) roughly how many GB you use per month, (3) whether you need hotspot, and (4) whether you're willing to use Verizon/T-Mobile/AT&T, I can narrow this down to the cheapest plan that genuinely meets your requirement.

When looking for a mobile plan with unlimited data and no hard speed throttling (where your speed drops to an agonizingly slow kbps rate), it helps to know the industry distinction between throttling (a fixed speed ceiling applied after a certain gigabyte threshold) and deprioritization (temporarily slowing down only if the specific cell tower you are on is congested).

Top options that offer truly unlimited data without a hard throttle cap include:

• Visible (Basic Plan) : Powered by Verizon, Visible offers a flat $25/month plan with truly unlimited data on device. They do not throttle your speeds based on usage, though your data may be deprioritized during heavy network traffic. (Note: Their mobile hotspot is capped at a specific speed, but data on the phone itself is uncapped).
• T-Mobile (Top-Tier Postpaid Plans) : Plans like Experience More or Experience Beyond feature truly unlimited high-speed smartphone data that is never hard-throttled based on how much you consume. You maintain maximum speeds unless the local tower hits maximum capacity.
• AT&T (Unlimited Premium) : AT&T’s top-tier unlimited plan features completely unthrottled data on your phone, meaning no structural slowdowns or caps regardless of how many hundreds of gigabytes you pull in a month (subject only to standard network management on packed towers).
• Total Wireless (Unlimited 5G Plans) : This Verizon-owned prepaid brand offers unlimited data options starting at highly competitive rates where high-speed data isn't subject to a harsh throttle or automatic deprioritization structure on their higher tiers.

To help narrow down the best fit, tell me:

• What carrier network (Verizon, AT&T, or T-Mobile) has the best coverage in your area?
• Do you need mobile hotspot data included, or is phone-only data sufficient?