In order to re-install mSpy on the Android device (Samsung, Huawei, Xiaomi, LG, Motorola, etc.) that you want to monitor, you need to have physical access to the phone.
It is important to understand that due to the high level of customization of Android devices, the steps from the following guide might differ from what you will see on the actual phone. However, all the menu sections are similar, and you will be able to find your way through easily. For example, instead of ‘Applications’, you might see ‘Apps’, ‘Application manager’, or ‘Manage Application’.
Skip this step and go straight to ‘Unlink Device’, if you want to install mSpy on a different phone.
On the phone that you are monitoring go to Settings -> Apps/Applications -> find and tap Update service -> tap Uninstall.