Regardless of whether you use an iPhone or an Android smartphone, it is possible for someone to install spyware onto your phone that secretly tracks and reports on your activity. It's even possible for someone to monitor your cell phone's activity without ever even touching it.
If someone is spying on your phone, you may see your device's data usage increase, your phone may unexpectedly reboot or show signs of slowing down. You may also notice activity, such as your device's screen lighting up when it is in standby mode. You may also notice your device's battery life suddenly decreasing.
The best way to block phone tracking is to use a VPN. But you can also change a few settings on your phone or switch to a different browser to stop tracking. You can hide your location via settings, block ad tracking with a dedicated private browser, and encrypt all of your internet traffic with a VPN.
If you have an iPhone, iPad, or iPod touch, Find My will send a notification to your Apple device. This feature is available on iOS or iPadOS 14.5 or later. To receive alerts, make sure that you: Go to Settings > Privacy & Security > Location Services, and turn Location Services on.
It is possible for someone to find your location by texting you if they have access to your phone's location information or if you share your location with them. For example, if you receive a text message with a link to a location, clicking on the link could allow the sender to track your location.
You can track someone's location without them knowing by installing a spy app secretly on their target phone. These phone spying apps track almost all targeted phone activities like Calls, SMS messages, Google map's location, Web history, Social Media sites like Facebook, WhatsApp, Snapchat, Telegram, etc.
Google Maps or Apple's “Find My iPhone”.
Once activated, they can then track their location remotely, using their own device. To check if you're affected, simply open the app and check if location sharing is turned on. This is different for each app but can be easily turned off.
Can Someone See Your Location on Airplane Mode with WiFi? If your phone is only in airplane mode, anyone who has access to your GPS can see your location. One way to ensure your location is hidden from others and third parties is to disable the GPS feature on your iPhone or Android.
Open the Phone app and tap on the Keypad. Dial *#21# and hit the green call button. Note: This doesn't work with every carrier and every model, so results may vary. You'll get a screen with details on the activity of your calls, SMS messages and even faxes.
Use the code *#21# to see if hackers track your phone with malicious intent. You can also use this code to verify if your calls, messages, or other data are being diverted. It also shows your diverted information's status and the number to which the information is transferred.
Code to check if phone is tapped: *#21# Code to show unknown connections and tracking (for Android): *#*#4636#*#* or *#*#197328640#*#*
Long story short: yes, someone can monitor your phone to keep tabs on all your activities. This includes phone calls, texts, browser activity, photos, videos, apps, and more. This is often done via spyware, a form of malware designed for monitoring a device's activity remotely.
Hopefully this has helped to reassure you that it is not possible for someone to hack your phone with just your number. However, phone hacking is a real threat and there are many other ways for hackers to gain access.