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Cell Phone Buying Guide

These days, it’s not hard to find smartphones with big, gorgeous screens, an assortment of cameras, and long battery life. A top-rated smartphone with premium features can easily cost $1,000 or more, but low-cost smartphones that sell for under $600 perform very well, too. It all depends on which features really matter to you.

Discounts and convenient payment plans are often available from manufacturers and cell phone service providers—you just need to make sure you understand the terms. If you get a high-end phone from a carrier, you generally need to stick with that company until the phone is paid off or pay the balance in full before closing your account.

Here’s a guide to help you sort through the options, including phone operating systems and features. Once you have a better idea of what you need, you can use a CR membership to consult our smartphone ratings, where you can review the specs and prices for dozens of Android phones and iPhones.

CR tests the battery life of every smartphone in our ratings with this robot that mimics real-world usage. Top models can deliver 30 to 50 hours per charge.

Do You Need a New Phone?

Here are four cases where it might be wise to buy a new phone instead of repairing or replacing parts of an old phone. 

Your Phone’s Performance Is Lagging
You can replace a cracked display or an anemic battery, but when you start to notice sluggish response times and other performance issues, even when your phone’s operating system (OS) is fully updated, it’s probably time to replace your device.

Your Phone No Longer Receives Security Updates
Security updates help patch vulnerabilities and keep you and your private information safer. But manufacturers stop offering security updates for the model you own after a certain number of years. If your phone is so old it’s no longer receiving those updates, it’s time to say goodbye.

Apple’s iOS 26, for example, supports models dating back to the iPhone 11, released in 2019. That means you’ll continue to get regular updates, including new features and security updates, for any iPhone sold since then. Samsung and Google offer up to seven years of updates for their most recent phones. For Android phones made by other manufacturers, operating system and security update policies often vary by device.

You’re Moving to a New Cell Phone Provider
If you do want a new phone, it often makes sense to buy one when switching providers, given the steep savings from new-customer offers. You can trade in an old phone to offset the cost of a new one or even receive a replacement at no additional cost.

That doesn’t mean you have to buy a new phone if you’re switching providers. Carriers are required to unlock your phone free of charge once you’ve paid off your device, which means you can bring your device along to another carrier. (In fact, if you move to a small, budget carrier, doing so could save you lots of money.)

You Want a Top-Notch Phone Camera and Display
The newest smartphones tend to offer only modest, iterative updates from the models released the year prior. Phone cameras and displays have been excellent in many smartphones for several generations now, so a slightly older device is unlikely to disappoint you. For instance, the camera on the iPhone 16 still earns near-top marks in our testing. Ditto for the Samsung Galaxy S24, which came out at the beginning of 2024.

But a new phone may be worth it if you want top-of-the-line features. Most phones now have multiple cameras for better wide-angle, zoom, and macro photography. Screens are continuing to improve, too. More phones have OLED screens, with vibrant colors and great contrast.

You can even purchase smartphones with book-like foldable displays that can double as a small tablet, such as the Samsung Galaxy Z Fold 7, or smaller pocket-friendly models that revive the classic flip form factor, like the Motorola Razr Ultra. Some manufacturers have also begun integrating AI features, such as generative photo editing and writing and editing tools, into their newest models.

Picking Your Phone Operating System

Although most people tend to stick to the same OS—often due to personal preference or familiarity—it’s worth knowing all the facts. A switch could bring you additional features or a way of interacting with your digital stuff that’s more appealing than what you have now. 

Samsung Galaxy s24

Android

If you want a wide choice of phones, you’ve come to the right OS. Google’s Android platform supports models from Google, Motorola, Samsung, and others. Options include compact models, foldable phones, and more.

The Android OS is highly customizable, thanks to widgets and other tools for tweaking phone controls, as well as the desktop’s overall look and feel. Android’s native Google search engine, Gmail, Maps app, and cloud-based Drive and Photos services are among the most widely used smartphone apps (even among iPhone users).

One drawback to Android is that phones are frequently sold with older versions of the OS, and users don’t always get updates in a timely way. The companies that make the phones tend to layer their own software on top of the OS, too, which can eat up storage space and clutter your home screen.

Apple iPhone 16

Apple iOS

Apple’s iOS interface is the same across carriers. iPhones are designed to interact seamlessly with MacBooks, iPads, the Apple Watch, and other Apple devices, such as the AirPods Pro headphones. You’ll also purchase apps through the Apple App Store rather than the Android-compatible Google Play Store. If most of your tech gadgets exist in the Apple universe, sticking with Apple across the board is probably a smart bet.