Something is wrong with my Wi-Fi I think?

Okay so lately, starting last night to be exact, my Wi-Fi has been really laggy. I'm using my iPhone and videos won't play, apps won't load or refresh and web pages won't open. Today when I came home every room on the first level of my house living room, dining room and kitchen my phones Wi-Fi works perfectly there. But as soon as I went upstairs my phone started lagging again. Little things about my phone, my bill has to be paid soon (2 days prior to question), is there enough memory on the phone? What could be the problem?

I think that the signal is perhaps weaker upstairs than downstairs. The further you get away from an internet connection (router/motem/etc/) the weaker the signal will get. I don't think there's anything wrong with your Wi-Fi - if you have it setup downstairs, then it's just the signal. If it's not that, let me know and I'll try to see what I can do

Oh dear. As per your query, you are saying that, as soon as you are going upstair your mobile Wi-Fi is not working. The problem is that every Wi-Fi router has its range, that means Wi-Fi works only to range its manufactured for. As you are going upstair its out of range. If there's no signal of Wi-Fi on your mobile. You won't be able to have internet on your mobile or anything that you wish to access to have internet using Wi-Fi. Thats what i guess…