I have level 7 espionage tech, so when one of my planets is about to be attacked i should be able to find out the total number of incoming ships and what type of ships are in the approaching fleet accordinge to the tech description. But i got attacked last night and all it told me was that an enemy fleet was approaching and how long it would be till they got there. Anyone know why this might be? Like is anything else required to get this info?

Did you scroll over the word "Fleet" in the incoming message on the overview screen?

If it comes up as a tooltip type thing then that explains it as i use my phone to play the game. I tried clicking it and it just refreshed the page...i didn't have an espionage probe present at that planet, was wondering if that could have been the problem

No it doesnt matter what your tech lvl is just scroll over the hostile fleet on the overview page and like Slash said it will tell you what kind of fleet is coming your way.