I have a Galaxy s4 (i9500) and a linksys cisco e900 router
Recently my isp asked me to upgrade the firmware
Until I updatee my firmware everything was working fine
After the firmware upgrade I am experiencing the following issues:
At the beginning when I conmect to my wifi everything works fine for the first 5 min, all apps work flawlessly, then suddenly my phone only uploads date (up arrow only) but no down arrow n then my apps such as whatsapp, fb messenger, etc do not recieve any data until I goto those apps and stay in there for about a min. Then I get all my whatsapp messages sent about a min ago . But my browser seems fine..and the speed there is good.
What could be the problem .
Is it my phone or the router.
Please help me out here