6 easy ways to keep your Android phone secure

1.Lock your phone (if you haven't already)

This seems like a no-brainer, I know, but there are too many Android users toting around unlocked handsets because they'd rather not hassle with a passcode. I sympathize, to be perfectly honest—PINs are annoying, particularly if you're having to tap one in every time you want to use your own phone.

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2.Locate and wipe your phone remotely

OK, so you locked your Android phone with a PIN or Smart Lock but you lost it anyway. Now what? Luckily, you can use the Android Device Manager to track your lost device and even wipe it if necessary, but only if you've enabled a pair of settings first.

3.Make sure Unknown Sources setting is disabled

So much for physical threats to your Android phone—now, let's move on to something trickier, starting with malicious apps.
Google does its best to make sure the apps on the Google Play store are free from malware, but it can't protect you from apps on third-party app stores or web sites.
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4.Let Android scan and verify your apps
Even with Google busily screening the apps in the Google Play store, there's always a chance that a malicious app slips through the cracks. With the right setting enabled, your Android phone can periodically scan your installed apps for malware.
5.Keep your phone updated
Hackers are continually changing up their strategies when it comes to cracking Android's security features—and as they do, Google keeps releasing security updates to patch the latest known vulnerabilities.
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That's why it's critical that you keep your Android device updated with the latest patches. If you don't, you're essentially leaving your phone wide open to attack.
6.Turn on Chrome's Safe Browsing feature
Malicious apps aren't the only online threat your Android phone will encounter. The web is rife with malicious sites that might try to steal your personal data via a "phishing" attack, or surreptitiously download a harmful app onto your handset.

Why do smartphone batteries explode?

Smartphones are cool. Explosions are cool. But combining the two? Not so cool. Sadly, though, exploding smartphones are a real thing. The risk may be fairly low, but that’s little consolation to those who’ve lost the use of their trousers – or worse…
Generally speaking, it takes an extremely serious manufacturing fault – or, more likely, series of faults – for such a catastrophic failure to occur.
But when it does happen, the results are dramatic – and often make headlines around the world. Most recently, Samsung suffered serious damage to their reputation in 2016 after a number of their flagship Galaxy Note 7 handsets spontaneously combusted, prompting a global recall.
Although stories like these are rare, it’s obvious why they capture the public imagination: none of us want to imagine that we’re carrying around a rectangle of highly volatile explosive in our pockets. But what actually causes smartphone explosions – and is there anything you can do to protect yourself?
The main offender: faulty hardware
When a smartphone (or tablet, or any other high-tech kit) goes bang, it’s almost always down to one faulty component: the battery.
After all, that’s where your phone draws its energy from – and an explosion is, as Wikipedia handily reminds us, “a rapid increase in volume and release of energy in an extreme manner”!
Here’s the basic version: all batteries have both ‘positive’ and ‘negative’ plates, which are usually kept separated by a non-conductive material. But if anything metallic happens to join the two plates – for example, if the battery is pierced by a metal object – then a short circuit is created.
Short circuits, by their nature, create an incredible amount of heat, light and other energy – and with the relatively large quantity of energy stored in the typical smartphone battery, this results in a serious explosion.
Now, modern smartphones use lithium-ion batteries which are, generally speaking, very safe. But if they’re overcharged without adequate protection, metallic lithium deposits can form between the plates, creating a short circuit – and that can be a recipe for a big bang, followed swiftly by calls to the fire brigade and your insurance provider.
Now, this is remarkably rare. These days, practically all lithium ion batteries have safety devices to prevent overcharging – but even with the best protection in the world, occasional manufacturing errors slip through the cracks.
What makes these errors particularly dangerous is that they don’t cause immediate failure. Generally, it isn’t until the battery gets warm that things get dangerous – and unfortunately for us, our phones tend to be at their warmest when we’re using them!
And it’s not always necessarily the battery itself that’s at fault. Anything that causes the battery to dramatically overheat can cause a catastrophic failure – including knock-off chargers and dubious third-party accessories.
If one of those overheats and conducts that heat to the battery, a big bang can often result – indeed, this is far more likely than a manufacturing fault in a genuine phone battery.
Keeping safe
So, how do you protect yourself? In the case of dodgy third-party accessories, there’s one simple step you can take to protect yourself and your phone: avoid lesser-known and generic brands.
In particular, China has a massive issue with unregulated third-party chargers and accessories, causing serious safety issues – so much so that Apple’s China-based website includes a safety page detailing the risks.
It’s not such a problem here in Europe, and most third-party manufacturers are held to the same stringent regulations that Apple are – but in the age of the Internet, it’s not difficult for dodgy devices to slip through the cracks.
As such, you should avoid buying generic chargers, cables and the like from unregulated marketplaces – whether in your hometown or on Amazon – and always check for good reviews and trusted suppliers when buying.
That should keep you safe from dodgy accessories – but what about battery failure?
First, the bad news: there aren’t always any clear or obvious warning signs to let you know that your lithium ion battery is about to fail.
Sometimes, a battery will start to swell and bulge before it fails completely, as the internal cells rupture and break. If you see something like this, ditch the battery as soon as possible – and try to do it safely!
But the bulge doesn’t always happen. If not, you might notice that your device is a little warmer than usual – but let’s be honest, our phones get fairly warm during standard usage anyway.
Perhaps because these faults are so hard to detect, mainstream manufacturers tend to be extremely quick and thorough with recalls: in 2015, gaming hardware giant Nvidia recalled nearly 90,000 of their high-end Shield gaming tablets after four devices reportedly caught fire. Similarly, Apple recalled a “very small percentage” of iPhone 5 devices in 2014 after identifying issues with the battery.
But these are big manufacturers, with stringent quality control procedures and the means to broadcast recall notices far and wide. Third parties don’t have the same abilities– and so, when it comes to buying replacement batteries, it’s always best to go with a trusted big-name manufacturer.
Final thoughts
The most important thing is not to worry too much: while dramatic, exploding smartphone incidents are incredibly rare – and by following a few sensible guidelines concerning third-party accessories, you can reduce the risk even further.
But it can never be entirely eliminated for as long as we’re using lithium-ion batteries. For that reason, it’s crucial to keep a close eye on all of your battery-powered devices for any suspicious bulging or dramatic overheating.
If you’re in any doubt at all, contact a tech support professional or your device manufacturer for further guidance – because with stakes so high, it’s not worth taking any risks.
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