Wireless set-up has a major impact on the broadband speed you’ll get.
It’s vital to put your router as close to where you use it as possible. Obstacles like walls, doors and wardrobes can make a huge difference to Wi-Fi speeds.
Turn off Wi-Fi on your device (or put it in aeroplane mode for a few seconds), then switch the Wi-Fi back on. Also try restarting your devices once in a while to help you get the best connection.
Your broadband speed is shared with every device using your router. If four devices are using the internet at the same time, they’ll get roughly a quarter of the available speed each. You should check if you need all these devices connected to your broadband, and disconnect them if not.