How can I check to see if my phone has been hacked?

How can i check to see if my phone has been hacked?: Data usage spikes of 5GB to 15GB

Users wondering how can i check to see if my phone has been hacked need to investigate unexpected bandwidth spikes and malware activity. Examining application data consumption reveals hidden spyware threats operating silently on mobile devices.

Is My Phone Hacked? The Hidden Warning Signs

To check if your phone is hacked, look for warning signs like unusual battery drain, unfamiliar apps, or unexpected data usage in your device settings. Not all strange behavior means you have been hacked, but you should take it seriously.

Most tutorials teach you to look for weird apps on your home screen. But there is one counterintuitive hiding spot that 90% of spyware uses - and I will show you exactly how to find it in the diagnostic steps below.

Mobile security threats are escalating rapidly. A staggering 34.13% of users encountered at least one malware-related incident in 2025. Furthermore, mobile malware strains and threats have grown significantly compared to the previous year. Surprisingly, over 50% of mobile apps collect unnecessary user data, sometimes acting essentially as spyware. This means the threat might not be a scary hacker in a hoodie, but rather that innocent-looking flashlight app you downloaded last month.

3 Red Flags Your Phone Is Compromised

The Silent Battery Killer

Your battery will naturally degrade over time. Usually, you lose around 10-15% of capacity each year. But sudden, drastic battery drops? That is a huge red flag. Malware runs continuously in the background, consuming CPU resources and is my phone being monitored?

I learned this the hard way. My phone started dying by 2 PM every day. I bought a new charger. I turned down the screen brightness. Nothing worked. It took me three days to check my battery usage settings and realize a simple calculator app was using 40% of my power. Delete any app that behaves like this.

Unexpected Data Spikes

Spyware has to send your stolen data back to the attackers server. This requires data bandwidth. If your monthly data usage spikes from 5GB to 15GB without any change in your habits, investigate immediately. Adware - which aggressively displays unwanted ads - accounts for roughly 62% of all mobile malware detections. Check your device settings for data usage per app.

Hidden Device Administrators

Seldom do we examine our deep security settings. Lets be honest, it is buried too deep. But this is where advanced malware hides. Go to your settings and search for Device Admin Apps (Android) or check your installed profiles (iPhone). If you see an unrecognized app with administrator privileges, remove it immediately.

The Secret Codes to Check for Call Interception

This next part is where most people get surprised. Hackers dont always need to install software to compromise your security. Sometimes, they just redirect your incoming calls and text messages to bypass two-factor authentication (2FA).

Using MMI Diagnostic Codes

You can use built-in MMI codes to check if your calls are being forwarded. Open your dialer and type #21and press call. This checks for unconditional call forwarding. If you see a strange number listed, your calls are being diverted.

Next, dial #67to check conditional forwarding (when you decline a call). If you find unrecognized numbers, dial ##002to disable all forwarding settings. That is it. Just three codes can secure your 2FA process.

How to Clean a Compromised Phone

Remember that hidden spot I mentioned earlier? Here is the counterintuitive truth: malware often hides as system services with names like Android Update or System UI - not on your home screen, but deep in your full application list in settings. Scroll through your full app list to find blank icons or hidden programs.

Step-by-Step Recovery

First, run a security scan using built-in tools or a trusted third-party antivirus. Second, remove bad apps from the full app list. Third, change passwords from a different, secure device - not the hacked phone.

The simplest defense is keeping your phone updated. Yet, nearly 50% of enterprise mobile devices run outdated operating-system versions ^[5]. Updates patch the zero-day vulnerabilities that hackers exploit. If problems continue, back up your core files and how to know if my phone has malware.

Platform Security Tools: Google Play Protect vs Apple Safety Check

Google Play Protect (Android) ⭐

• Warns you about unverified apps downloaded outside the Play Store
• Can automatically disable or remove harmful apps from your device
• Runs automatically in the background, scanning billions of apps daily
• Scanning installed applications for malware and suspicious behavior

Apple Safety Check (iOS)

• Not applicable as iOS natively restricts sideloading for most users
• Allows bulk revocation of location, camera, and microphone access
• Requires manual initiation to review privacy settings
• Managing access and permissions granted to people and apps

The Silent Forwarding Attack

David, a small business owner, noticed he stopped receiving verification texts from his bank in October 2025. He assumed it was a carrier issue and waited three days. Meanwhile, his battery was draining unusually fast.

He called his bank to reset his password, but the new temporary codes never arrived. He was frustrated and locked out of his accounts. He even factory reset his phone, but the problem persisted.

At a complete loss, a colleague suggested he check his call forwarding settings. David dialed #21and discovered his calls and texts were being silently diverted to an unknown overseas number.

He dialed ##002to disable the forwarding, immediately received his backlog of verification texts, and secured his bank account before any funds were stolen. He now checks his MMI codes monthly.