How to Scan and Remove Malware from Android and iOS Phones: An In-Depth Guide

Hey there! Malware on your smartphone can be incredibly disruptive and dangerous. As a fellow technology geek, I completely understand how unsettling it can be to see strange pop-ups, deal with a slowed down device, or wonder if your data is secure.

Not to worry – I‘ve got your back. I‘m going to walk you step-by-step through how to scan for and remove malware from your Android or iOS device. With some vigilance and the right tools, you can catch infections early and keep your phone clean.

Let‘s start by examining what mobile malware is, how it works, and its potential impact. This will help you understand why proactive scanning and removal is so critical.

What is Mobile Malware and How Does it Work?

Mobile malware refers to malicious software programs designed to infiltrate smartphones and tablets. They have nefarious goals like:

Stealing your personal data – contacts, photos, logins, etc.
Monitoring your activity – tracking your location, recording audio, etc.
Hijacking device resources – mining cryptocurrency, spamming your contacts, etc.
Generating unwanted ads – slamming you with popups, notifications, etc.
bricks your device or destroys your data.

Table 1 shows the most common categories of mobile malware and their effects:

Type	Description	Effects
Spyware	Secretly collects data like contacts, messages, location	Privacy violation, identity theft
Trojans	Malicious apps masquerading as legitimate ones	Data theft, monitoring, hijacking
Ransomware	Encrypts data and demands payment to decrypt	Extortion, data destruction
Botnets	Turns your device into part of a malware network	Distributed attacks, spamming
Adware	Bombards you with excessive ads	Annoyance, data consumption

As you can see, the implications range from annoying to catastrophic. Adware might clutter your phone with irritating ads, while spyware can completely violate your privacy and expose your data.

So how does malware actually get onto your phone in the first place? There are a few common infection vectors:

App Store downloads – Even official stores like Google Play and the App Store can have malware slip through review processes.
Sideloading / untrusted sources – Installing apps outside of app stores is very risky, since there is no review process.
Phishing scams – Malicious links in emails/messages can trick you into installing malware.
Public WiFi networks – Unsecured networks are playgrounds for hackers to distribute malware.
Syncing with infected PCs – Malware can spread to your phone via a connected computer.
Excessive permissions – Overly broad app permissions can be a sign of malware.

As a general rule, mobile malware targets platforms and devices that have weaker security. That‘s why over 85% of mobile malware targets Android, according to [McAfee]. The openness that makes Android flexible also increases susceptibility to malware.

iOS is at much lower risk thanks to Apple‘s tight control and app review process. But malware can still occur, especially with jailbroken devices. Specific malware [types like XCodeGhost] have successfully infiltrated even the App Store.

Ultimately, all mobile platforms and devices are vulnerable in the ongoing cybersecurity arms race. The key is being proactive about threat detection and removal.

Assessing the Mobile Malware Threat Landscape

The amount of mobile malware in the wild fluctuates year to year, but the overall trend is increasing exponentially. To give you a sense of scale, check out these statistics:

463,273 new Android malware samples were identified in 2020, up from 430,000+ in 2019 [McAfee].
Mobile malware attacks increased 15% from 2019 to 2020 [PurpleSec].
0.13% of mobile devices had a high-risk app installed in 2020, up from 0.08% in 2019 [PurpleSec].

Ransomware and banker malware (targeting financial apps) are some of the fastest growing categories recently. Attacks are also becoming more sophisticated, using tactics like overlay screens to steal login credentials and data.

iOS threats remain comparatively low, but are rising:

Apple discovered and removed 30 malicious apps from its App Store in 2020 [TechCrunch].
An iOS ransomware campaign was found pushing variant malware to 150 million mobile devices in 2025 [Lookout].

These examples demonstrate that complacency is dangerous – malware developers are constantly evolving their tactics. Proactive scanning and removal is essential to protect yourself. Don‘t wait until you see suspicious activity.

Impacts of a Mobile Malware Infection

The consequences of a malware infection range from minor nuisance to complete catastrophe:

Reduced speed and performance
Rapid battery drain
Frequent pops-ups, ads, redirects
Data consumption spikes from background processes
Partial or complete loss of data
Stolen personal information and logins
Financial theft if banking details are taken
Full device lockout via ransomware
Bricking of device if malware interferes with system files

Even basic adware can badly degrade the user experience. And advanced spyware that silently steals data over months or years can enable identity theft and severe financial fraud.

Table 2 shows potential impacts based on malware type:

Malware Type	Potential Impact
Spyware	Data and identity theft, surveillance
Trojans	Data destruction, full device control by attacker
Ransomware	Extortion, permanent data loss
Botnets	Hijacked device resources, participation in cybercrime
Adware	Poor performance, high data usage bills

As this shows, even "basic" malware like adware can have real monetary costs by consuming large amounts of data. The impacts quickly escalate from there.

Financial damages are the most tangible impact. A 2021 Norton study found consumers worldwide lost over $34 billion to cybercrime [Norton]. Mobile malware was responsible for a large portion of this.

But even more damaging can be loss of personal data and violation of privacy. Once private data gets into the wild, it‘s out there forever. Recovering from identity theft and other fraud can take countless hours.

That‘s why I always advise being proactive. Don‘t wait to act until you see definite signs of infection. Use the best practices in this guide to keep malware from infiltrating your device in the first place.

Now let‘s get into the good stuff – how to actually find and remove malware from your Android or iPhone!

Scanning and Removing Malware from Android Devices

The open nature of Android provides more flexibility but also increases susceptibility to malware. Thankfully, Android also gives you built-in tools to detect and remove threats.

Use a Trusted Anti-Malware App

Third-party anti-malware apps provide continuous protection against the latest threats by proactively scanning apps and memory. They act as a second line of defense alongside Android‘s own Play Protect service.

Some top options include:

Malwarebytes – Provides excellent malware detection even in the free version. One of the most trusted names in security.
Bitdefender – Fast and accurate malware scans with minimal performance impact. Extremely user-friendly.
AVG Antivirus – Reliable malware protection from a well-known security company. Light on system resources.

I suggest Malwarebytes as the best overall choice, but any of these will significantly boost your protection. Install one on your device and set it to periodically scan to catch any malware that slips past Google Play‘s defenses. The app will alert you to anything suspicious so you can remove it.

Use Google Play Protect

Google Play Protect is Android‘s built-in anti-malware engine. It scans over 50 billion apps daily across 2 billion devices, using machine learning to detect emerging threats. I definitely recommend enabling it:

Open the Play Store app.
Tap the hamburger menu in the top left.
Select Play Protect.
Review any detected threats and remove any suspicious apps.

Play Protect will automatically disable apps identified as malicious. You‘ll also receive alerts if anything is found. Make sure to run manual scans occasionally too for peace of mind.

Having both Play Protect and a third-party antivirus app gives you layered protection.

Carefully Review Unknown Apps

One common malware vector is "sideloading" – installing apps outside of the official Google Play Store from sketchy sources. Make sure to carefully review any apps that didn‘t come from Play:

Go to Settings > Apps.
Select See all apps.
Carefully examine this list and uninstall anything unfamiliar or suspicious.

I also recommend disabling "Install unknown apps" in Settings to block installation of sideloaded apps altogether. This vastly reduces your malware risk.

Stick to downloading apps from only the Google Play Store to keep your device secure.

Use Android App Scanner Apps

App scanner tools like TrustGo Ad Detector can quickly hunt down malware, adware, spyware, and other threats hiding on your device. They scan installed apps and alert you to anything dangerous.

Run app scans periodically to find any nasty stuff that may have snuck onto your device so you can delete it promptly. This helps reinforce Android‘s own protections.

Factory Reset if Malware Persists

As a last resort, a full factory reset will wipe your Android device and remove even deeply embedded malware. Before resetting:

Back up your data – a factory reset will erase everything.
Sign out of all accounts – otherwise malware could re-infect when you sign back in.
Enable Find My Device – lets you remotely wipe the phone if lost after reset.

To factory reset:

Go to Settings > System > Reset options
Select Erase all data (factory reset)

This nuclear option gives you a fresh start if malware evades all your other efforts.

Scanning and Removing Malware from iOS Devices

Apple‘s tight control of iOS makes malware infections rare, but not impossible. Here are the best ways to find and remove any malignant apps on your iPhone or iPad:

Update to the Latest iOS Version

Apple is quick to issue updates patching vulnerabilities used to distribute malware. Updating ensures you have all the latest security fixes:

Go to Settings > General > Software Update.
Install any available updates.

Staying updated closes loopholes that could allow malware attacks. Enable automatic iOS updates for maximum protection.

Use a Mobile Anti-Malware App

A small selection of anti-malware apps for iOS can provide additional assurance your device is clean. Lookout, Norton, and Malwarebytes are top choices.

These tools alert you if any suspicious apps are found. They also monitor network traffic for phishing attempts and other threats. Some even provide scam call blocking and web filtering.

Anti-malware apps are worth considering for extra peace of mind despite iOS‘s low malware risk.

Review Recently Installed Apps

Carefully check apps you‘ve recently downloaded for anything suspicious – this can reveal malware that slipped past Apple‘s review process.

Look for apps with:

Unknown developers
Very few reviews/downloads
Broad or suspicious permissions
Activity inconsistent with the app‘s purported purpose

It‘s better to be safe and delete any apps that look fishy. Stick to downloading only widely-used apps from well-known developers.

Restore from a Trusted Backup

Restoring your device from a clean backup can wipe out any lingering malware. Before restoring:

Ensure your backup doesn‘t contain malware. Only use a known good iTunes or iCloud backup.
Sign out of iCloud – otherwise malware could reinfect your device when you sign back in after restoring.

To restore, either connect to iTunes and run a wipe and restore, or reset your device to factory settings via Settings > General > Reset. Then restore your data from the trusted backup.

This will give you a fresh malware-free start.

Best Practices to Avoid Mobile Malware Infections

Removing malware is important, but preventing infection in the first place is ideal. Here are some tips to keep your phone or tablet malware-free:

Install apps only from official stores like Google Play and the App Store – never sideload from unverified sources.
Avoid clicking random links in messages/emails – common phishing tactic to distribute malware.
Never root or jailbreak your device – this disables important security protections.
Review app permissions and avoid those that seem excessive – can indicate malware.
Connect only to trusted Wifi networks – public networks often spread malware.
Keep your device fully updated with the latest OS version and security patches.
Periodically scan your device with a trusted antivirus app – catch any malware that sneaks through.
Backup your data regularly – allows you to safely wipe your device if infected.

Following these best practices reduces your risk significantly. But it‘s still wise to periodically scan your device for malware to catch any infections early.

Frequently Asked Questions About Mobile Malware

Can iPhones get malware and viruses?

Yes, iPhones can become infected, but it is relatively rare compared to Android. Sticking to the App Store for app downloads, avoiding jailbreaking, and keeping your iPhone fully updated will prevent most malware. Periodic scans with an antivirus app provide additional protection.

What are the signs my phone has malware?

Common symptoms of a mobile malware infection include:

Decreased battery life and slow charging
Sluggish performance
Frequent crashing or freezing
Unexpected pop-up ads
Apps suddenly disappearing
High data usage when not in active use
Device running hot when not in heavy use

Unexpected behavior like this can indicate malicious apps and processes running in the background.

How can malware get on my phone?

The most common ways malware infects mobile devices:

Sideloading infected apps from outside official app stores
Clicking phishing links in messages or emails
Connecting to compromised public WiFi networks
Syncing your phone to an infected computer
Visiting insecure websites on a mobile browser
Installing apps with suspicious permissions

Will a factory reset remove malware from my phone?

Yes, performing a factory reset will wipe all data and settings from your mobile device, removing any malicious apps or files in the process. Just be sure to restore data only from a known clean backup after resetting to avoid reinfection.

Which is better – Android or iPhone for security?

Android is inherently more vulnerable to malware than iPhone due to its open platform. But both can be infected in some circumstances. Overall, iPhones have a security edge, but Android also provides robust malware protections if you stick to Google Play app downloads and enable scanning features like Play Protect.

What‘s the best free antivirus app for Android?

Top free antivirus apps for Android include AVG Antivirus, Bitdefender Antivirus, and Malwarebytes. All provide excellent malware detection with minimal impact on system performance. Malwarebytes is probably the top choice, even with the free version.

Final Thoughts

Dealing with malware on your smartphone can be a frustrating and unnerving experience. The amount of sensitive personal data stored on phones makes them prime targets for cybercriminals.

Thankfully, with vigilance and the right tools, you can stay on top of mobile malware threats. I hope this guide has provided everything you need to keep your Android or iOS device clean and secure. Don‘t hesitate to reach out if you have any other questions!

Stay safe out there!