You can download Bitcoin core and run a node as prune node. With that, you don't need to keep all the Bitcoin files which can give you much space and then you can also open your laptop anytime you like and synchronize with the network, it's as simple as that but you need to understand that you need to do Initial block download(IBD) before you can use your Bitcoin core as nodde after which you can delete or prune the file you want to remove from your computer.

You can't make a node with your android phone because android phones don't have the capacity, even with laptop you need you some specifications like a higher ram, a larger ssd drive and good processor so that it doesn't lag when running a node.