This app was mentioned in 4 comments, with an average of 0.75 upvotes
I use following app... However there are many app can do similar things... I just put the phone near the pluck and see signal strength from other pluck....
https://play.google.com/store/apps/details?id=com.tools.netgel.netxpro
This is going to be quite a lazy answer, but I have NetX Pro and it's quite feature rich. I don't use it much, but maybe you can check out the free version. Sorry for not being more helpful.
NetX Network Tools PRO seems promising
Sure this is the link: https://play.google.com/store/apps/details?id=com.tools.netgel.netxpro