I havent had any trouble with a phantom using most normal lists i play. It does change your tactics and your opponent can mix things up. I have lost to the phantom as well, its a good ship but I think all wave 4 ships are equally game changing which I am glad to see. So i figured I'll post them and how they own the phantom.
6 Tie Swarm: Spread out, you dont need howlrunner keep your ties about 2 away from each other and there is literally no way for it to not be in arc. beat 2 lists using the phantom this way. 1 had 1 phantom and the other had 2. It was a tough game but the biggest problem with the phantom is that when decloaking it has to move so give it no were to go(also if a phantom bumps like it did ALOT that game, sad phantom). Also for the Imps the Fett has returned. He blows Phantoms out of the water.
2 Interceptor 3 tie build: Fel loves them phantoms
Turr loves only 3 of them
Han Shoots first with C3PO, PTL, Nub, and Falcon title +2 ships: phantoms worst nightmare lol smoked him so bad. you evade then guess 0 and you are guaranteed 2 evasions your first shot against Han. then you can be guaranteed 1 every turn. Phantoms cant tank like a Falcon. the other 2 ships keep the rest of his list busy. or you could just spam Z95s and get falcon with a small swarm
B wings are in trouble, ywings are ok, but I was using rebel aces cards that have already been revealed in a game recently and the new a wing pilot killed 2 phantoms in a single game lol. the awing in my opinion is the phantom hunter, especially with vi and ptl or pred. get a high PS a wing, boost barrel roll and focus with your veteran instincts into range 1 and side shot that thing. If anything it strips tokens. Played another game tycho aced a phantom and a third game 2 greens with VI and PTL were able to bascially make it so he had to decloak in a certain direction or get rang 1 shots from 2 a wings. They didnt kill anything but they could help control the decloak barrel rolls and boosts making the phantom never have a shot unless i got a shot too...I mean its only fair