Android’s real battery-life killers and how to stop them

Tired of topping up your phone? These are the features and settings that really make a difference. Switch them off and get a new lease of battery life

Summary created by Smart Answers AI

In summary:

• Tech Advisor identifies hidden Android settings that drain battery more significantly than common fixes like adjusting screen brightness.
• Key battery killers include background app activity, Always-On Display, fixed 120Hz refresh rates, constant location access, and 5G connectivity draining 6-11% more power than LTE.
• Solutions involve restricting non-essential app permissions, enabling adaptive refresh rates, and adjusting Battery Saver activation to 30-40% instead of default 15%. Detailed instructions are provided below.

Your phone shouldn’t need a charger by 3pm. If it does, the problem is almost certainly not what you think. Most battery advice points you to screen brightness. Dim it down, use dark mode, maybe turn off Wi-Fi when you’re not near a router. That’s not wrong but it only scratches the surface. There’s much more you can do. 

The settings doing the most damage are quieter and harder to find. While your screen is off, these hidden features are constantly pinging servers, scanning for devices, and silently draining your battery.

They’re also settings that are switched on by default on most Android phones. Spend five minutes changing them, and you can reclaim hours of standby time. Here’s where to actually look.

1. Turn off background activity if the app doesn’t need it

Android gives every installed app permission to run in the background by default. That sounds reasonable until you realise it means that your photo editing app, three games you haven’t played since February, and a shipping app you downloaded for a one-off discount coupon are all refreshing themselves in the background right now. None of them need to be. 

Go to Settings > Apps, pick any app, tap Battery/Power, and set it to Restricted. That significantly limits its ability to run in the background. Work through your full app list and apply the same to apps you don’t need live updates from, such as games, lifestyle apps, and anything you open manually when you want it.

I picked up over an hour of screen-on time

Most of these can be restricted without any effect on how they actually work when you use them. For apps that genuinely need to run in the background, like messaging apps, your email client, and anything you depend on for notifications, leave those on Unrestricted/No Restrictions.

I went through my app list properly for the first time about two months ago, set around 35 apps to Restricted, and I picked up over an hour of screen-on time by the following afternoon. That one change made a bigger difference than anything I’d tried in the previous year.

2. Check which apps have location permissions (it’s more than you think)

It’s easy to think of location as something your phone uses when you open Maps. But a lot of apps have permission to access it constantly, including when they’re closed and you haven’t used them in weeks.

Go to Settings > Location > App location permissions, then tap: “Allowed all the time/Apps that can always access location.” Every app on that list has access in the background right now, pulling location data regardless of whether you’re actively using it. For most of them, there’s no good reason. 

Instagram doesn’t need to know where you are while it’s closed. Neither does Deliveroo, or any shopping app, or most travel apps, outside of the moment you’re actually travelling. Set them to “Only while using” and they’ll work exactly the same when you open them. The location access only runs when it actually makes sense. 

If your list is long, start with anything installed in the last three months. New apps default to the broadest permissions they’re allowed to request, and most people accept them without reading. 

3. 5G uses more battery than most people realise. Do you need it?

The 5G modem draws more power than the 4G LTE modem – that’s just how the hardware works. Most carriers still run what’s called Non-Standalone 5G. That means your phone connects to both 4G and 5G simultaneously. It’s two radios running at once instead of one: one for calls, one for data.

Research from Ookla puts the average battery drain increase at between 6% and 11% compared to LTE, based on real-world usage data. In areas with patchy 5G coverage, the modem burns extra power searching for a signal it can’t reliably hold, and the gap gets worse.

It only takes four taps

If you spend most of your day indoors, switching to LTE is worth doing. Open Settings > Network & Internet > SIMS > Preferred network type, then select LTE. The speed difference on anything you’d do inside, such as browsing, streaming, and messaging, is negligible. The battery difference by late afternoon isn’t.

Switch it back when you’re out and actually want 5G speeds. It only takes four taps. There are days I forget to do it and only notice by midday when the phone’s running warmer than usual. I’m not entirely sure at that point whether I’m measuring a real effect or I’m just looking for one. I switch it to LTE anyway, and the afternoon is consistently better. 

4. Always-on display should sometimes be off

It’s showing you the time and your notification count, so your brain registers it as earning its keep. What it’s actually doing is keeping a portion of your screen active whenever the phone is sitting face-up and idle: on your desk, on a table, on a charger at night. The sensors will turn it off when the phone’s face down or in a pocket, but for everything else, it runs continuously. 

How much it costs depends on the implementation. Some manufacturers light up more pixels than others, at higher brightness. Samsung tends to be more intensive than Pixel. If more of the display is active, more power is drawn. On any phone where the battery is already tight through the day, it’s a reasonable thing to switch off. 

Go to Settings > Lock screen >Always on display. Turn it off for a week. If you genuinely miss it, turn it back on. Most people find they stop thinking about it after a day or two.

5. What’s your refresh rate?

Most current Android flagships default to adaptive refresh rate, which scales between 1Hz and 120Hz depending on what’s on screen. When it’s working correctly, that’s efficient. But some phones default to a fixed 120Hz out of the box, or the setting gets changed without the owner noticing. 

Go to Settings > Display > Refresh Rate. If it’s set to a fixed 120Hz rather than adaptive, switching costs you nothing visually. The screen still hits 120Hz during scrolling and animation. It just doesn’t hold the rate on the static page or a lock screen where there’s nothing happening.

6. Switch on Battery Saver earlier than the default

Stock Android prompts you to enable Battery Saver at 15%. By that point, you’re already managing the phone carefully, avoiding non-essential use, watching the percentage drop every time you check the time. At 15%, it’s too late to make much of a difference.

Go to Settings > Battery > Battery Saver and set it to activate automatically at 30% or 40%. What it restricts: background activity, location accuracy, and sync frequency are what’s been running down your battery all day anyway. Having it kick in earlier means those restrictions do some actual work before things get critical. 

At 15%, it’s too late to make much of a difference

If your phone has Ultra/Extreme Battery Saver, use it on travel days or any day a charger isn’t accessible. It drops almost everything except calls and texts. It’s not a comfortable daily state but it’s a way your phone can still be functional at 11 pm when it otherwise wouldn’t be. 

None of these changes requires new hardware. They’re settings your phone shipped with switched on, aimed at convenience, with battery life as the trade-off. Adjust background activity and location permissions first. Those two alone will make a visible difference before the day is out.

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