The service had been working for a long time and then ipad and iPhone could not connect to the router or lost connection are a short time. Android could connect.. Very strange. We had been sent an upgraded router about a year ago and luckily kept the old one. Switched the router and everything worked. Logically the new router has developed a problem. Explained this on chat, 30 mins still no help so called support line and explained everything. 90 mins on the line and they then said we need to buy range extenders. We refused and they finally agreed to send a new router which solved the problem. 2 hours lost when we told them the problem from the start. Total rubbish support needs looking at urgently. Talktalk support is seriously not fit for purpose. If we had not had a spare router we would not have had the problem resolved and would only be able to restore Internet access by going to another provider.