I have no idea what your life is like or where you’re going or what you’re doing, but to need a phone and a laptop and be 3-4 days without power means you are either very important or possibly too attached to your phone and laptop.
If you need this sort of capability, you’re getting into the pro levels of kit (military, remote news reporting etc) and that costs. Can you leave the panel out in the sun all day to charge the battery? (If you’re using the electronic stuff to drain the battery, then you can’t leave that around plugged in all day so you need a battery anyway)
What do you need it for and can you solve this another way? Will the phone be on all the time (if there’s no power, will there be anyone to call?), do you need the laptop, can you take a camera instead, a few SD cards, a battery to give you a couple of phone charges?
Get down to your actual needs and work up from there.