Unless I am mistaken, and I'm sure there will be a ton of people here who will correct me.
There are no multi-alt-coin open source wallets for mobile.

Since this is in the bitcoin wallet section not the alt-coin wallet section, there are going to be different views.

Which comes back to the thought of if you are going to have a BTC wallet on your phone and 6 or 7 of the big alts on your phone which is better?
7 or 8 wallets that are all open source but who has time to check the code and verify everything before installing all the new versions as they come out or just 1?

And then you have all the different keys to store from all the wallets and everything else.

It's the loop of convenience vs. security.

-Dave