Is it possible to spy on a cell phone without installing software?
Unlike iOS devices, they can’t be monitored without software installation on the devices. To spy on someone’s Android cell phone, you need to download and install the monitoring software on their phone.
What happens when you pair two phones together?

In Bluetooth, pairing enables two Bluetooth devices to communicate with each other. For devices to find and identify each other so they can communicate, one or both must be discoverable, which means they broadcast a Bluetooth signal other devices can detect and connect to.
Can someone spy on your cell phone without touching it?
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.
Is there a way to link two phones together?
Go to the phone settings and switch on its Bluetooth feature from here. Pair the two cell phones. Take one of the phones, and using its Bluetooth application, look for the second phone you have. After turning on the Bluetooth of the two phones, it should automatically display the other on the “Nearby Devices” list.

How to spy on someones text messages without them knowing?
PhoneSpying App PhoneSpying App PhoneSpying App is a very popular phone spying app that helps you to spy on text messages.
How to stop someone spying my text message?
– Do not install apps from third party sources. – Do not go to malicious websites. – Keep track of app’s access and permissions
How can I spy on my girlfriends text messages?
Read messages and iMessages: Spyic will log all SMS messages as well as iMessages for iOS devices.
How to send secret text messages?
Open Notepad or any text editor. You can open Notepad by clicking on Start > Run. Then type notepad and hit ↵ Enter.
https://www.youtube.com/watch?v=HqhO2XV-4gM