QUOTE(pronester @ Apr 9 2018, 05:19 PM)
just installed my unifi on saturday
thinking of getting another router so that i can get a stable/reliable connection
I would do it and recommend the TP Link Archer C7 v4, or the Asus art-AC1300UHP if you have the budget.
QUOTE(hurricane21 @ Apr 9 2018, 07:43 PM)
Did cordless phone really will interference wifi signal?
Just read some article say that 'router should keep far away from electrical appliances such as bluetooth
devices,
cordless phones, microwave ovens to avoid wireless interference.'
However my phone is placed above the modem since day one.

Thanks.
No. As shown by bro
soonwai and bro
AVFAN, the cordless phone won’t interere with your current existing wireless network.
QUOTE(hurricane21 @ Apr 9 2018, 09:34 PM)
Oh okay I see, I just want to make sure money spend in the right way before spending it.

If possible I want to use wired across the home, but don't like the wire casing here and there inside house plus my devices are from years ago so them may not be fully utilize the bandwidth. Hacking the wall is just too troublesome.

Current setup is just too pathetic, C1200 in living room and using Mi Router Mini as repeater in my room on third floor due to the signal only cover 1st and 2nd floor but the signal is sometime changing on each other router, this make me fed-up.
If can rewiring, wish to upgrade to better router or switch on first floor and another AP on third floor. Just wishing la.

Thanks for the info, but I am still trying to learn these networking thinggy.
It's 2018 now and I yet to have a Microwave oven in my house.

Try the TP Link C3150 v2. It won’t solve your problems but its wireless transmission strength is one of the best out there IMO. As bro AVFAN mentioned, best option for you is to have a wired AP on your 2nd and 3rd floor for best coverage and throughout, but if it’s not possible, try that router that I mentioned and get a good extender.