Apart from 0-conf channels with LSP Olympus by Zeus, you can open whatever other channels you want, if you use the embedded node.
But the question is why would you want a giant channel instead of 2-3-4 smaller like 3-5M sats at maximum?
Better using MPP than just one channel.
On a mobile is not really necessary to have big channel, but just enough to do your regular payments.
REMEMBER: you are not routing with these private nodes!

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Zeus PoS works only linked to Square now. So if you are not a Square user....