Would it be legally normal for Law Enforcement members to give a civilians spy monitoring equipment to help them spy on their neighbor?

My example would be monitoring the targets home phone service so they can receive the incoming phone calls of the target home phone so that they can receive the phone numbers of the people who are calling the target house so they can spy on the people that call using their number as well. When the target phone makes a phone call, they can listen on whom they are having a conversation with real time and know what number they dial so that they can spy on the phone number they dial as well.

If they use a mobile device such as an IPhone, or Android Phone, if they just have the number of the phone, they can track them, receive their outgoing and incoming phone calls, receive their texts messages outgoing or incoming.

These software programs like Highster Mobile, Auto Forward Spy, ddi utilities that use to claim that you needed physical access to the phone you wanted to spy now say that you do not need the physical access of the phone you just need the login information. However, from many people that I have talk to they say all you need is the active working phone number of the target phone.

Anyhow, is it legal? If I can prove my neighbors are doing this what can I do legally to arrest have them arrested. If law enforcement of any kind is allowing them to do this because they had, no idea someone would figure it out how much trouble would they be in if the right people found out. Could they be doing this all on their own even though they do not appear to be hackers?

Added (1). If police, FBI, or CIA were investigating the neighbor would it make it legal for them to use the technology to help spy on them?

This type of surveillance requires a fact-based request by law enforcement to and approval by a court. Then they do the surveillance, not the resident of the house.

Wire taps (they're still called that even though physically tapping the wires is no longer necessary) require a court order, and a lot of evidence to justify the need. Require a lot of manpower since they are required to be constantly monitored, not just automatically recorded. There's absolutely no way anyone other than a sworn officer would be allowed to take part in the tap. Simply imagining that a neighbor would be drawn into such a case, in any capacity at all, or that a neighbor would even be notified it was going on, is simply absurd.

Anyone acting on behalf of the police is subject to EXACTLY the same legal restrictions as the police. If you intended to ask if police can legally get around the rules by having someone else act on their behalf, the answer is no. If the police can't do something themselves, they can't legally have someone else do it.