What to Look for When Comparing Phone Plans

Start with what you actually use

Before you compare plans, write down how you use your phone right now. Check your last three bills for how many gigabytes of data you used each month, how many minutes you spent on calls, and how many text messages you sent. Most people guess wrong about their own usage — they think they need more data than they do, or they underestimate how much they talk.

If you don't have old bills, most carriers let you check your usage history online or through their app. Look at the past three months, not just one, because usage varies. A month where you traveled or were sick might not show what you normally need.

Write down the number that matters most to you. For many people it's data. For others it's unlimited talk and text, or a low monthly cost no matter what. Knowing your priority keeps you from getting distracted by features you don't need.

Key Takeaways

• Check your actual data, call, and text usage from your last three phone bills before comparing plans, because most people misjudge what they need.
• The monthly cost varies by how much data you use, so a plan that looks cheap at 5 gigabytes might cost more than a different plan if you actually use 15 gigabytes.
• Network coverage in the places you spend time matters more than national coverage maps, so check the carrier's coverage at your home, work, and commute route.
• Hidden costs like activation fees, equipment charges, and overage fees can add hundreds to the first year, so read the full price breakdown before deciding.
• Switching carriers usually takes one day, and you can keep your phone number by requesting a transfer code from your current carrier before you sign up with the new one.

How to read the price breakdown

The advertised price is almost never the full price. Before you compare two plans, make sure you're looking at the same costs for each one. A plan that costs $50 a month sounds cheaper than one that costs $55, but if the first one charges a $35 activation fee and the second one doesn't, the cheaper plan costs more over a year.

Write down these numbers for each plan you're considering: the monthly cost, any activation or setup fee, the cost of a phone if you need one (or whether the plan includes one), the cost per gigabyte if you go over your data limit, and whether there's a contract or early termination fee. Some carriers charge nothing to leave. Others charge $200 or more if you cancel before 24 months.

Add up the total cost for 12 months, including the activation fee and any phone cost. That number is what you're actually paying, not the monthly price alone. If one plan costs $50 a month with no fees and another costs $45 a month but charges $100 to start, the first plan is cheaper unless you plan to stay for more than 20 months.

Check coverage where you actually are

National coverage maps look good for every carrier. What matters is whether the network works at your home, your workplace, and the places you travel regularly. A carrier with great coverage in cities might have dead zones on your commute, or vice versa.

Go to each carrier's website and enter your home address, work address, and any other place you spend significant time. The map will show you the type of coverage — usually 5G, 4G LTE, or 3G — at each location. If the map shows 3G or no coverage where you spend time, that plan will frustrate you no matter how cheap it is.

If you're not sure, ask friends or family who use that carrier whether they have good service in those places. Real experience is more reliable than a map. Some carriers also let you test their network for a few days before you commit, so ask whether that's an option.

Understand data limits and overage costs

Plans come in three types: a set amount of data per month, unlimited data, or a mix where you pay less if you use less. If you use 5 gigabytes most months but sometimes use 8, a plan with 6 gigabytes might charge you $10 to $15 per gigabyte over the limit — meaning you'd pay $20 to $45 extra that month.

Unlimited plans cost more per month but protect you from surprise charges. They make sense if your usage varies a lot, or if you stream video or music regularly. If you use the same amount every month and it's under 10 gigabytes, a fixed-data plan is usually cheaper.

Some carriers slow your speed after you hit your data limit instead of charging extra. Others let you buy more data as you go. Read what happens when you reach your limit — it changes how much the plan actually costs you.

What to know about phones and equipment

You can bring a phone you already own, buy a new phone from the carrier, or buy one from a third-party seller. Each choice costs different amounts and ties you to the carrier for different lengths of time.

If you buy a phone from the carrier, they usually let you pay it off over 24 months as part of your bill. That phone is locked to their network until you pay it off. If you bring your own phone, there's no equipment cost and no lock-in, but the phone has to work on that carrier's network — not all phones work on all networks.

Before you buy a phone from a carrier, check what that same phone costs at a retailer like Best Buy or Amazon. Carriers sometimes charge more. Also ask whether the carrier charges an activation fee on top of the phone cost — some do, some don't.

Compare what happens if you need to leave

Some carriers charge nothing if you cancel. Others charge an early termination fee, usually $200 to $350, if you leave before your contract ends. A few carriers have no contract at all — you can leave whenever you want.

If you're not sure you'll stay with a carrier for two years, a no-contract plan is worth paying a bit more for. If you know you'll stay, a contract plan might save you money. Read the cancellation terms before you sign up, because they're hard to change later.

Also check whether the carrier charges a fee to switch your phone number to a different carrier. Most don't, but some do. If you're keeping your number, ask about this before you commit.

How to actually switch carriers

Switching usually takes one day. Call your current carrier and ask for a transfer authorization code — sometimes called a port authorization code or PAC. Write down the code and your account number. Then go to the new carrier's store or website and tell them you want to bring your number with you. Give them the code. They'll handle the rest.

Your service will switch over within a few hours to a day. You don't have to do anything else. Your old carrier will send you a final bill for any charges through the day you switched. You can cancel your old account once your new service is working.

If you're buying a phone from the new carrier, ask whether they'll activate it the same day or whether you need to wait. Some carriers activate phones in the store. Others mail them to you, which takes a few days.

Frequently Asked Questions

What if I don't know how much data I actually use?

Log into your carrier's website or app and look at your usage history for the past three months. If you can't find it, call customer service and ask them to tell you your average monthly data use. Start with a plan that matches your average, not your highest month, because you can always upgrade if you need more.

Can I keep my phone number when I switch?

Yes. Before you sign up with a new carrier, call your current carrier and ask for a transfer authorization code. Give that code to the new carrier when you switch. Your number moves with you, and the switch usually happens within a day.

What's the difference between 4G and 5G?

5G is faster, but you only notice the difference if you're downloading large files or streaming video. For texting, email, and regular browsing, 4G is fine. If 5G isn't available where you spend time, don't pay extra for it.

Do I have to buy a phone from the carrier?

No. You can bring a phone you already own, as long as it works on that carrier's network. You can also buy a phone from a retailer and bring it to the carrier. Buying from the carrier locks you into a payment plan, but it's sometimes cheaper upfront.

What happens if I go over my data limit?

It depends on the plan. Some carriers charge per gigabyte over the limit. Others slow your speed but don't charge extra. A few let you buy more data as you go. Check your plan's terms before you sign up so you know what to expect.