
10.23.25
How much mobile data do I actually need?
by Valeria
Your comprehensive guide to the two types of phone plans: how they work, who they're best for, pros & cons, and how to choose.
You won’t get too far into shopping for a phone plan before you confront the choice between prepaid vs. postpaid plans. Deciding which type is right for you will help focus your search for the best plan for you.
Here’s a quick look at the key differences between prepaid and postpaid phone plans, before we dive deeper:
With prepaid phone plans, you pay first and then use the service. Because you’re paying ahead, there’s no credit check. You also don’t have to sign a contract, so you have the flexibility to switch to something else at any time.
Postpaid plans, on the other hand, let you pay at the end of a month of service, but you must undergo a credit check and sign a contract. That makes it harder to switch plans or carriers.
Here's an in-depth look at each type of plan:
A prepaid phone plan is one where you pay up front for a period of service, typically a month. You get a set amount of talk, text and data during that time. If you use it up, you can pay to add more, start a new billing cycle, or switch to another plan or even another carrier. Because you’re paying ahead, you won’t have to undergo a credit check.
Prepaid plans are offered widely, not only by the Big 3 wireless carriers (AT&T, T-Mobile, and Verizon) but also by the service resellers who pay to use the Big 3’s cellular networks. Those are called mobile virtual network operators (MVNOs), and they can offer lower prices because they don’t have to maintain their own infrastructure. The tradeoff is you might not get many or any perks, like free streaming subscriptions, and your data might be prioritized behind other plans, risking slower performance at times.
Unlimited data plans: You prepay for a set period of unlimited talk, text, and data. But unlimited plans are usually not truly unlimited — you typically get a set amount of high-speed data, after which your data speeds are slowed until the next billing period. An example: With the Visible+ plan, you get 50GB of premium data then may see slower speeds until your billing cycle resets.
Capped plans: You purchase a set bundle of talk, text, and data (if you want it) for a defined period — usually 30 days, although some providers, like Mint Mobile, only sell service in 3-, 6-, and 12-month bundles. If you run out before the paid period ends, you can buy more or “top up” while keeping the same renewal date. For example, say you use Tello’s Build Your Own Plan option. If you need more before the service period ends, you buy 1GB, 3GB, or 5GB more data (which expires when the billing cycle ends) or buy credits that cover calls, texts, and data (credits expire after 90 days).
Pay-as-you-go plans: You buy a set amount of talk, text, and mobile data if you want it, and use it till it runs out. You’re not tied to a specific billing cycle. When your credits run out, you have to buy more to continue.
No-data plans (talk & text only): The name says it all: You get calling and texting but no data or a very minimal amount to fuel simple actions.
Within these categories of plans, there are varieties aimed at different types of customers, such as:
Prepaid plans have a lot to recommend them:
There are some tradeoffs to be aware of with prepaid plans:
Prepaid phone plans are great for people who want to stick with a budget, want to avoid surprise extra charges, and want the flexibility to switch plans if their needs change. They also help those new to credit or with damaged credit to get a phone plan.
They’re also a good way to get temporary phone service when traveling abroad, by getting a SIM card for international travel.
Because they tend to have lower premium data limits, people who want a lot of high-speed, prioritized data or who can’t often be on Wi-Fi should shop carefully. There are some prepaid plans with high allowances for premium data and mobile hotspot, but you might prefer a postpaid plan.
The best prepaid phone plan for you will depend on your priorities. Here are a few highlights:
If you want rock-bottom prices, you can’t go wrong with TextNow’s $0 Free Flex plan. It gives you unlimited talk & text, plus 1GB free data for essential apps and the ability to buy more data if you want it.
For premium data with no cap, US Mobile’s Unlimited Premium on its Dark Star (AT&T) network will give you unlimited premium data with no slowdowns for $44 ($35 with current offer).
Many prepaid plans come from service resellers called MVNOs (think Visible or Mint). But don’t overlook prepaid plans from the Big 3 carriers. AT&T, T-Mobile, and Verizon may be better known for postpaid service, but they also offer prepaid no-contract plans at prices that can be competitive:
A postpaid plan lets you pay for service at the end of your service period, but you have to enter a contract. Because the carrier is essentially extending you credit, you’ll face a credit check. Unfortunately, although a postpaid plan is a credit account, paying your phone bill typically doesn’t help your credit unless you take specific actions — but it can damage your credit if you pay more than 30 days late.
These plans are mostly offered by the Big 3 networks and cost more than prepaid — but they’re also likely to offer perks like free subscriptions, smartwatch coverage, and free cloud storage.
Types of postpaid phone plans
Unlimited data plans: You can talk, text, and use all the data you want — but as noted above, most plans are not truly unlimited. You will have a cap on how much premium, high-speed data you get before data speeds can be slowed the rest of the billing period. But postpaid plans tend to offer higher premium data amounts than prepaid plans do.
Limited data plans: These allow a set amount of data use during the billing period. For example, AT&T has a 4GB postpaid plan for $50 after AutoPay discount. If you need more data before the next billing cycle, it’s $10 per 2GB. However, for only a buck more per month you can get the $50.99 Value Plus VL plan with unlimited data (though data speeds may be slowed when the network is busy).
Just like with prepaid plans, you’ll find postpaid plans that target various types of consumers:
People who need a lot of data might prefer a postpaid plan because they tend to offer the highest allowances of premium data. They also tend to be richer in streaming subscriptions and other perks heavy data users might appreciate.
Postpaid plans also offer phone financing and upgrade perks, which can be attractive to those who want access to the latest phone models. And they’re more likely to have multi-line discounts for family plans.
Shoppers going for a postpaid plan will have fewer to sort through, as these mainly come from the Big 3 carriers. It’s more about the data speeds and perks you want, and you can still find some cheap phone plan choices. Here’s a quick comparison (all prices are with AutoPay discount):
You know your needs best. But — generally speaking — prepaid is a better choice if you’re most focused on cost and the flexibility to adjust how much you spend month to month. But if your top concern is premium data and perks, and you don’t mind locking into a contract, postpaid may be better for you.
Consider these things when selecting a phone plan:
Prepaid plans are the winner on both: They tend to be priced lower and they're better for budgeting, because no contract means you can switch to something more affordable at any time.
Yes, you’ll find that prepaid plans have some tradeoffs that come with their lower prices. Prepaid plans from MVNOs generally get the lowest priority on the cellular network, so you have a greater chance of slower speeds during times of network congestion. But that tends to be short-lived and typically happens in crowded areas.
Prepaid plans also tend to have lower caps on how much premium data you get than either postpaid plans or prepaid plans from the Big 3 carriers. But as always, there are variations. For example, Visible+ Pro offers unlimited premium data for $45 a month, or sometimes less during limited-time offers. Meanwhile, you’d pay $75.99 for AT&T’s Unlimited Extra EL and get only 75GB premium data.
And on all unlimited plans, prepaid or postpaid, there will be a fair-use rule concerning high data usage. But these tend to affect only a small percentage of users. For example, Verizon bases its fair-use policy limit on the top 0.5% of data users.
There can be extra costs beyond the price you see in big type on the website, whether prepaid or postpaid. Here’s what to look for before choosing a carrier and plan:
Both prepaid and postpaid plans may include international service, data roaming, family plans, and more. It just depends on the particular carrier and the specific plan.
This is where it pays to dive deeper into a carrier’s website. Use the main description of the plan to narrow down your choices but then pay attention to fine print — look for:
When looking for family plans, keep in mind a carrier may instead call them “multiline plans” or simply ask you to choose the number of lines you need to see the price.
For maximum flexibility, go with a prepaid plan — whether it’s from a Big 3 carrier or an MVNO. With prepaid plans, there’s no ongoing contract, so you can switch plans or carriers whenever you want.
Postpaid plans, however, do have a contract that typically runs 24 or 36 months. If you want to change before then, you’re limited. You may be able to switch to a different plan from the same carrier (usually trading up to a higher-cost one). But to go elsewhere, you’ll likely face an early termination fee and have to pay off any balance remaining on a financed phone.
You’ll find plenty of guidance and comparisons online, whether you’re looking for a cheap phone plan, one with unlimited data, or any other flavor of plan like those for seniors or kids and teens.
Create a list of the ones that appeal to you, then dig further into the details:
You’ll find fewer postpaid plans, mainly from the Big 3 (AT&T, T-Mobile, Verizon). Identifying which carrier has the best coverage in your area can help you narrow the choices down. Then, get into details:
Got questions or comments? Send us a note at [email protected]!

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