In short, there is a lot of cleaning up to do when it comes to in-app ads. If something looks too good to be true, it probably is. You have to look for signs that don't add up, and research further. It's not always about technical tools, it's about being aware and giving hints to teams where there might be a problem.
As varied as the choice of smartphones on offer are, one thing they all have in common is the undeniable ability to frustrate their users by failing to detect a connection signal. Seemingly bamboozled by even the smallest obstructions, current smartphone technology is not as synonymous with reliability as it would like to pretend.