Huge backpacker here - Aren't we just getting along swimmingly lately? I have the Goal Zero Sherpa and it works great. When I go car camping and I can let it sit in the sun it will run a lot of stuff for a while just on the battery storage part. But for charging a phone, you are much better off in terms of weight with something like the Energizer Charger. It's super simple, you can recharge the whole thing with a new pair of batteries, and they work as advertised. Simply put, the Goal Zero is a much heavier solution to the problem because it can do more, but that's not what you really need. Of course, as a backpacker I know that sometimes need and want don't have to line up for a purchase so do what you want.
Amazing how solidly the people who fit in here fit in here. I love it. That last sentence is probably the truth. I just love the idea of a solar charger over batteries. Everything I've read says they're less practical and I'm just looking for the excuse that they aren't. I'll try the charger first. I carry that kind of battery for my steripen, so the weight won't even change much. Solid recommendation.
She doesn't know the number one rule of Ultralighting. Love the Sherpa. If someone is going to carry tea, you can be super thankful that they carried tea even though you wouldn't have. If someone wants to bring a 6 pack in the pack, even though Rumpleminze is my drink of choice for back packing, then you go ahead and swap a beer for some liquor later. That's just crazy. Lady ended up with no tea and a worse hike.