A WiFi range extender (google that, if necessary) might be a solution, but I'd start complaining about the bad signal with the owner or the apartment building.
I live in an apt. building which has a wifi signal for tenants to use. I happen to live last door in the hallway and the signal drops once I get to my door, never mind in my apt.
What can I do to boost the range of the existing signal? What do I have to no about that router or access point to get that signal to reach me also inside my apartment? Can someone advise me what to do ( and if possible in-expensively)