Are you, like many others, having trouble farming shards for your Phoenix squadron? And you also don't want to spend 100$ on a mobile game? Do you also have millions of ally points lying around with a few hours of spare time? I think you see where I'm going with this: THE SHARD SHOP IS YOUR FRIEND. Buy all the bronziums you can. If you have, say, jedi consular at 7 stars and you get him in a bronzium. That's 25 extra shards that can be converted into shard shop currency.
25 x 15 = 375
If you can get that much currency from one 2 star character, imagine how much you can get with a 3 or 4 star toon.
15 x 50 = 750
15 x 80 = 1,200
Probably the most common drops in the bronziums are teebo, ewok scout, ig86, royal guard, JC, clone Sargent, and snow trooper. If you have all those toons at 7 stars, you're in luck. And if you're lucky enough to get a 3 or 4 star toon (mace windu, veers, and luminara seem to be the most common) then it's an added bonus. You're welcome