I think so, but don't quote me on that. All I know is that they have a restore method where you can restore your wallet balance in case you lose your phone. I haven't tried it yet myself to prove it works, but from what I've read from those that I view as knowledgeable/trustable, the restore method should work in case needed.
Discussion
yeah, it's definitely not the cheapest, but it's a good way of requiring less trust to use LN before you're ready to do it yourself.