Weak Wi-Fi is usually a design problem, not a hardware problem. Buying another router often makes it measurably worse.

When Wi-Fi is bad, the instinct is to buy another router and put it near the bad spot. Sometimes that helps. More often it adds a second network shouting over the first, and the dead zone moves rather than disappears.

Coverage is not the same as capacity

A phone showing full bars can still be unusable. Bars measure signal strength from the access point to you. They say nothing about how many other devices are competing for the same airtime, or whether the access point has a fast path back to the internet.

The usual culprits

  • Too many devices on one access point, so each waits its turn
  • Access points daisy-chained wirelessly, halving throughput at every hop
  • Neighbouring networks on overlapping channels
  • Thick walls and steel shelving between the device and the access point
  • One flat network where cameras, guests and staff all contend

What actually fixes it

A site survey, wired backhaul to every access point that can take a cable, channel planning that accounts for the neighbours, and segmentation so that a camera uploading footage cannot slow down a payment terminal.

It is less exciting than new hardware, and it is usually cheaper.