So this is the case, I have installed a new Fiber router with two bands (2.4 and 5 ghz). I connected my iphone 5S to the 2.4 ghz which works fine however it somehow stops receiving wifi for about 20-30 seconds from time to time. I know this inst a router problem since other devices are working well with 2.4ghz. Any workaround for this? The5ghz works ok so far.
Read more: https://iphoneus.org/faq/how-do-i-fix-an-iphone-5s-which-stops-getting-wifi.html