Samsung Galaxy S9 Review - Battery Life and Verdict Review

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Samsung Galaxy S9 – Battery Life

Battery life on the Samsung Galaxy S9 is almost exactly the same as last year’s S8. Even with the switch to a more efficient mobile chip, it’s a shame Samsung hasn’t really been able to squeeze any more juice from the 3000mAh battery.

It’s also a shame that battery size hasn’t increased, especially since it now has a more power-hungry screen to deal with.

Obviously, battery life will vary wildly depending on your usage, but unless you’re a really light user, you’ll be unlikely to make it through the day without a degree of battery-anxiety. During the review period I normally found myself reaching for a charger by around 8pm.

Related: Best Android phones

Samsung Galaxy S9

It’s worth noting that there are lots of features on the Galaxy S9 that can be a drain on the battery.The Video Enhancer mode boosts the brightness of the display to create a faux-HDR effect when using apps such as YouTube, Netflix or Google Play Movies. With this on, however, an hour of video-watching depletes the cell by nearly 20%.

Best Samsung Galaxy S9 Deals

Samsung Galaxy S9 – 3GB of data on O2 (use code TRUSTED10)

If you're in the market for a low-cost contract on a high end phone, then this offering from O2 is exactly what you need. Not only can save £10 on the upfront cost using the code TRUSTED10, but you'll also have access to all of O2's perks, including O2 priority.

Samsung Galaxy S9 – 50GB of data on O2 (cashback deal)

A massive amount of data for a low monthly price and nothing to pay upfront. It's worth noting that this is a cashback deal to take the equivalent monthly price down.

Samsung Galaxy S9 – 15GB of data on O2

At just a little extra each month, you can nearly double your data with O2. If you're partial to a fair bit of Netflix on your commute then this is the best contract to go for.

Related: What is HDR?

If you want to eke out more juice then you’d be wise to reduce the resolution of the display or limit performance. There are some fantastic power-saving modes on offer, which make a real difference to power consumption, if you can live with the sacrifices. Conversely, juggling with these modes can make it appear that you’re not getting the most out of such a powerful device.

Charging the Galaxy S9 is via the USB-C port, or through a Qi/PMA wireless charging pad. Samsung’s own fast-charging is supported – both wired and wirelessly – but you’ll always get the fastest speeds through a cable.

Why buy the Samsung Galaxy S9?

The Samsung Galaxy S9 ticks most of the boxes with regards to what most folk want in a phone: good camera, attractive design, stunning screen and plenty of interesting features to play with.

Yet it feels like Samsung could have done more. I’m not talking about another complete redesign – that was never going to happen – but with the iPhone X being such a radical departure for Apple, and the Pixel 2 having such an amazing camera, it feels like Samsung has played it safe.

Samsung seemed to think so, too, with the Galaxy S10 changing a lot from the S9. In that regard, the newer Galaxy S10 is the better phone and, if you’re after a flagship, then it’s the model to buy. While the Galaxy S9 wasn’t an exciting phone on launch, age has meant that its price has dropped, and the S9 is now a good-value alternative to the S10 offering many similar features at a more wallet-friendly price.

Trusted Score


Score in detail

  • Performance 8
  • Camera 8
  • Design 9
  • Battery Life 7
  • Value 7
  • Software 8
  • Calls & Sound 8
  • Screen Quality 10

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