It sounds defective out of the box so take it back and ask for a good router.
Your post does not tell me it's your problem to fix.
Ever since I got my belkin n150 router to replace my dlink router(it was getting very old and subsequently had started failing) my internet connection has been going down every 2 mins for 10-20 seconds then going back up. By internet connection I mean the little animation/picture showing the wifi connectivity on PCs, phones, ipods etc.
However, on my PC it was fine ever since I put the belkin set up CD in for the router. Obviously I cannot put the CD in my phone, and the internet problem makes it near impossible to stream, download and play online games on my phone.
Has anyone encountered this problem before (and acquired a fix :D?)
Thanks for reading