Like any computer, a smartphone may sometimes stop responding. An app or an operating system glitch may prevent your phone from working. A slow or disconnected internet connection can do the same.

Recently my computer has started freezing a lot. I built the computer myself and have had it for a few years now. It has 2X4 GB of ram, 2.66GHz quad core i5 processor, NVIDIA geforce GTS 250, 130 GB ...

With over a decade of experience at Which?, Tom covers everything from tech advice to money-saving tips and highlights the best deals during major sales events. Dealing with a computer that constantly ...