How much data do I need on my phone plan? A simple way to pick

Data plans are priced in a way that pushes you up: the next tier is just a few dollars more, so it feels safe to pay for more. But if you use Wi-Fi at home and at work, much of that mobile data goes unused. On the other side, a plan that is too small leads to slow speeds or overage fees. The fix is to measure, not guess. This guide shows how to check your use, gives rough numbers for common activities and explains how to match a plan to your life.

Step 1: check how much data you actually use

For the iPhone steps and how to line the counter up with your bill, read how to check data usage on iPhone. You can also see usage in your carrier app, which is more accurate for billing. Look at three months, not one, because a single trip or a movie night can skew the picture.

Rough numbers for common activities

These are rules of thumb. The real figures depend on the app, the quality setting and the length of use.

• Messaging and email: very little, usually a small fraction of a gigabyte a month, unless you send many photos and videos.
• Maps and navigation: light, often tens of megabytes an hour.
• Music streaming: tens to a couple of hundred megabytes an hour, depending on quality.
• Social media scrolling: can be a few hundred megabytes an hour, more with auto-playing video.
• Video calls: often several hundred megabytes to over a gigabyte an hour.
• Video streaming: from about one gigabyte an hour in standard quality to several gigabytes an hour in HD or 4K.
• Hotspot to a laptop: depends on what you do, but it can use many gigabytes in a day.

Which data tier fits you?

Limited or unlimited?

Unlimited plans are not always unlimited. Many slow your speed after a set amount, called deprioritization, limit video quality and cap the hotspot. Even so, they remove the fear of overage fees. A limited plan is cheaper if you use little and can also be safer for a child. Compare the price difference with the extra data you would use. If the unlimited plan costs a few dollars more and you regularly come near your limit, unlimited is often the better deal. If you use under five gigabytes a month, you are paying for something you do not use.

Planning for a family

Check each person's use, not just the bill total. Parents often use little, and teenagers use a lot, so a shared plan can be cheaper than the same plan on every line. Some carriers share a data pool among lines, while others give each line its own limit. A child on a limited plan with controls can save money, and a heavy user can be on unlimited. If you are adding someone, see how to add a line to your phone plan.

How to use less mobile data

When you run out of data

• Check your carrier app for your balance and the date it renews.
• Turn on Wi-Fi and Low Data Mode, and turn off heavy apps.
• Buy a small data add-on if you need it before the reset, and compare it with moving to a bigger plan.
• If it keeps happening, move to a bigger plan, or a cheaper one with Wi-Fi habits.

If the bill is the problem, these ways to lower your phone bill can save more than a plan change. To choose between plan types, see prepaid vs postpaid and how to choose a cell phone plan.

Check your data use on iPhone and Android

On iPhone, open Settings › Cellular and scroll to see data used in the current period and by each app. Reset the statistics at the bottom on the first day of your billing cycle to make the number match your bill. On Samsung, go to Settings › Connections › Data usage › Mobile data usage. On Pixel, go to Settings › Network & internet › SIMs › App data usage. Your carrier app also shows the exact amount used this month.

Hotspot needs its own budget

Using your phone as a hotspot for a laptop uses far more data than the phone alone, because computers download updates and load full websites. Many unlimited plans give a separate, smaller amount of high speed hotspot data. If you work from your laptop on the go, check that number before picking a plan.

Lower streaming quality to stretch your data

• YouTube: in Settings › Video quality preferences, choose Data saver on mobile networks.
• Netflix: in App Settings › Mobile Data Usage, choose Save Data.
• Spotify: lower streaming quality under Settings and privacy › Audio quality.
• Download shows and playlists on Wi-Fi before trips.

Traveling outside the US

Your normal data allowance may not apply abroad. Some plans include data in Mexico and Canada, others charge a daily fee for international use. A travel eSIM with a few gigabytes is often cheaper for longer trips. Turn off Data Roaming if you do not want surprise charges.

Data for kids and teens

Teens often use more data than parents, mostly on video and social apps. A capped line with a few gigabytes teaches limits, while unlimited avoids arguments and overage charges. Many family plans let you set data limits per line in the carrier app.

Start with what you use today and pick a plan with a little room to grow.