I love NASA, always have, but we all know that SLS is never actually going to the moon, right? NASA will get there, but SLS is just a fragile pork project that's launched once in 3 years. This isn't a serious attempt to go anywhere.
Should be an interesting test of battery performance.
Either there will need to be a charger on board, or very strict usage so the phone isn't draining the battery trying to connect to a cell, wifi, bluetooth etc when turned on.