Recently I've been suffering from bad home wifi coverage. What is the fastest and most reliable broadband plan and are there other ways to improve my wifi?

If you are on 1GBPS and using Airties, you need to find out the cause of the problem.

1. If you stand beside the router, whats is the speed?

2. If you go to the furthest point from the router, what is the speed?

If point 1 is already slow, the problem is either your router or modem. Try connecting LAN cable from your router straight to PC. They see the connection. If its bad, call singtel to get technician down.

If point 1 is fast but point 2 is slow, the place you put your Airties is wrong. Try to shift it around.