DVR9? Did you mean 9 channel dvr? If you want to view your video on iphone, you must have the IP camera. It has no relation with your dvr. just connet your camera to a router. Detail information you can refer [mod edit - please refrain from spamming]
Snoy, Pansonic, Sansum is very good. But the price is also expensive. I think some medium brands has high cost performance. Just like zmodo. Search Zmodo in goolle.You can visit them wesite and loot at if there is someone fit for you.