How are smartphone screens measured?

Screen size measurements for smartphones are calculated by measuring diagonally from the upper left-hand corner of the screen to the lower right-hand corner¹. These measurements are expressed in inches.

How do you decide on the perfect phone screen size?

Our smartphones have become a really big part of our lives. We use our phones to listen to music, take pictures, study, work, or even pay. Whether we are standing, walking, on the way to work or doing just about anything, we mostly have our phones in our hands. Consider how you hold and use your phone to work out the best screen size for you.

What can your thumbs actually reach?

When trying out a new phone, a great tip is to swipe your thumb across the phone screen from left to right in a curved arched. This way, you can work out what size phone screen works for you. For a comfortable fit you should be able to reach to approximately the middle of the screen or more.

Do you use your phone with two hands?

Think about how you type on your phone; do you use one hand or two? Large phone screens will probably feel more comfortable if you use two hands, whereas a smartphone with a small phone screen will be less of a stretch for one-hand typers.

What’s the biggest Samsung phone?

The Galaxy Z Fold5’s expandable 7.6-inch display has the largest screen on a Samsung smartphone. If a foldable smartphone is not something you are looking for, the epic Galaxy S24 Ultra’s 6.8-inch QHD+ Dynamic AMOLED 2X screen is your next biggest option.

What’s the smallest Samsung phone?

The Galaxy Z Flip5 is the smallest Samsung phone measuring in at only 8.5cm x 7.2cm when folded shut. Alternatively, the Galaxy S24 has a 6.2-inch screen which makes it another great option if you’re looking for a smaller screen phone.

Choose your location and language.

What is the best Samsung phone for my phone battery needs?

Discover your ideal phone battery life and the best Samsung phone for your usage.

How long will my Samsung phone battery last?

Internet Usage (Wi-Fi/LTE)

Up to 25 hours*

Video Playback (streamed)

Up to 26 hours*

Audio Playback

Up to 99 hours*

*Based on average/typical user for the Galaxy S23 Ultra

What affects your phone battery life?

Smartphone battery life is affected by many factors including your phone usage, age and temperature. Above all, what affects how long your battery can last the most is your battery capacity. When it comes to having the best phone battery life, size matters. Not all smartphones have the same size battery, or the same charging capabilities. If you want the phone with the longest battery life, look for smartphones with the most mAh like the Galaxy S24 Ultra, Galaxy A54 5G, Galaxy A34 5G, and Galaxy Z Fold5. The more mAh a mobile phone has, the longer a phone can last between charges.

What is mAh?

mAh means “milliampere hour” which refers to the amount of charge a mobile phone battery is able to deliver. Each of our phones has an mAh value assigned, which is calculated based on average usage. This can be used to estimate the number of hours of battery life. However, it is important to note that how long your phone battery can last will vary based on how you use your phone.

How much does screen brightness affect battery life?

Setting your screen brightness at maximum brightness will of course require more battery power compared to minimum brightness. Therefore, turning your screen brightness down is one way to reduce your battery consumption.

As a rule of thumb, smartphones with larger screens like the Galaxy Z Fold5 also require more power to light up the display as they have more surface area. Models with higher resolutions and higher refresh rates will also require extra processing power. For example, having a 120Hz display means it will refresh twice as often as the standard 60Hz display. This requires additional processing power and therefore battery life.

How do cameras affect phone battery life?

Phone cameras take a lot of processing power, as they are an additional piece of hardware that your phone battery needs to support. If you use your phone camera often, whether that’s taking selfies or recording videos, it will place a demand on your phone battery. This is especially true for smartphones with pro-grade camera capabilities, such as recording in 8K resolution, as these are much more battery-intensive.

If you’re looking for pro-grade cameras, 8K video resolution and revolutionary AI enhanced Nightography, look no further than the latest Galaxy S24 Ultra. Don’t worry about the battery draining fast, as the Galaxy S24 Ultra comes with a whopping 5000mAh battery that can last day and night.

What Samsung phone has the best battery life?

Your ideal Samsung phone will depend on your usage. If you play mobile games or like taking high-quality photos or videos, look for phones with bigger batteries and fast charging capabilities like the Samsung Galaxy S24 Ultra, Galaxy A54 5G, Galaxy A34 5G, and Galaxy Z Fold5. You can find a battery capacity comparison of the top Samsung phones in the table below

Table
Battery capacity (mAh, Typical)	Model
5000 mAh	Galaxy S24 Ultra Galaxy S23 Ultra Galaxy S22 Ultra Galaxy A54 Galaxy A53 Galaxy A34 Galaxy A33 Galaxy A14
4900 mAh	Galaxy S24+
4700 mAh	Galaxy S23+
4500 mAh	Galaxy S22+ Galaxy S21 FE
4400 mAh	Galaxy Z Fold5 Galaxy Z Fold4 Galaxy Z Fold3
4000 mAh	Galaxy S24
3900 mAh	Galaxy S23
3700 mAh	Galaxy Z Flip5 Galaxy Z Flip4 Galaxy S22
3300 mAh	Galaxy Z Flip3

Why is my phone battery draining so fast?

How long your battery can last depends on how you use your phone. The main thing to note is that smartphone battery life usually gets shorter over time. If you open many applications at once your battery is also likely to run out faster even if you are not actively using them. The applications can still consume battery power in the background, so it’s best to close any apps once you’ve stopped using them. Your battery also drains much faster when your phone’s temperature is high. You can check out our What to do when your phone heats up guide if your phone heats up often.

How to share battery on Samsung?

Left your charger at home? Wireless Powershare* allows you to charge your phone using another Qi-enabled device. Even better, you can now charge two devices simultaneously with a single charger*.

Wireless PowerShare is limited to smartphones with Qi wireless charging. You can find a list of Samsung Qi-enabled devices below:

- Galaxy S24, S24+ & S24 Ultra
- Galaxy S23, S23+ & S23 Ultra
- Galaxy S22, S22+ & S22 Ultra
- Galaxy S21 FE 5G
- Galaxy Z Fold3, Fold4 & Fold5
- Galaxy Z Flip3, Flip4 & Flip5
- Galaxy Watch4, Watch4 Classic, Watch5, Watch5 Pro, Watch6 and Watch6 Classic
- Galaxy Buds Live, Buds Pro, Buds2 and Buds2 Pro

*Limited to Samsung or other brand smartphones with Qi wireless charging. If battery power is lower than 30% Wireless PowerShare may not function. May not work with certain accessories, covers, other brand devices or some Samsung wearables. May affect call reception or data services, depending on your network environment.

Which Samsung earbuds are best for battery life?

Samsung’s range of Galaxy earbuds are designed to keep up with everyday use, with a long lasting battery that keeps up with you throughout the day. The latest Galaxy Buds2 Pro gives you up to 5 hours of continuous playtime and up to 18 hours of battery when sitting in the charging case, 3 hours longer than its predecessor the Galaxy Buds2. You can even give the Galaxy Buds2 Pro an extra 150 minutes of playtime by placing them in the charging case for just 10 minutes.

Need a phone that can power up quickly?

The Galaxy S24, Galaxy Z Fold5 and Galaxy Z Flip5 are compatible with 25 Watt Super Fast Charging*, meaning you can get back to using your phone in a flash. If that’s still not fast enough, you can charge even quicker with 45W Super Fast Charging* capabilities, compatible with the latest Galaxy S24 Ultra & Galaxy S24+.

*25W Power Adapter, 45W Power Adapter and data cable sold separately. Using the original Samsung 45W Power Adapter and data cable is recommended for Galaxy S24+ & Galaxy S24 Ultra. Using the original Samsung 25W Power Adapter and data cable is recommended for Galaxy S24, Galaxy Z Fold5 and Galaxy Z Flip5 5G.

Explore our biggest battery phones

See all

Most common questions

Explore answers to frequent queries below.

Compare the models Compare the models

Find the best phone fit for you. Find the best phone fit for you.

Compare the models

Best A Series Phone Best A Series Phone

Four Galaxy A Series phones floating in front of a white background with a splash of water behind them.

Best Camera Phone Best Camera Phone

A close up image of a woman with curly ginger hair, holding a Galaxy smartphone to take a picture of the foreground.

Best Samsung Phone Best Samsung Phone

Three Samsung Galaxy smartphone are resting face down on a desk surrounded by a plant and a cup of coffee.

What is Mobile Data? What is Mobile Data?

A Galaxy Z Fold5 and Flip5 are resting against a white background. Vodafone, O2 and Three logos are displayed above the phones.

Back to Buying Guide

Smarter Service

Instant advice from the experts who know Samsung best.

Free 14 Day Returns

If you don’t love it, return it.

Flexible Finance

Spread the cost and trade in for an instant discount.

Free Delivery

1. Estimated against the usage profile of an average/typical Note20 Ultra 5G user. Independently assessed by Strategy Analytics in USA and UK in July, 2020 with pre-release versions of SM-N980, SM-N981, SM-N985, SM-N986 under default setting using LTE and 5G Sub6 networks (NOT tested under 5G mmWave network). Actual battery life varies by network environment, features and apps used, frequency of calls and messages, number of times charged and many other factors.

2. Typical value tested under third-party laboratory condition. Typical value is the estimated average value considering the deviation in battery capacity among the battery samples tested under IEC 61960 standard. Rated (minimum) capacity is 6,800 mAh. Actual battery life may vary depending on network environment, usage patterns and other factors.

3. Feature availability available on Galaxy Note20 and S20 range only. Wireless charge compatible (QI standard) devices only. Battery charge above 30% required to PowerShare on the move without being plugged into mains charge.

Hide in AEM