I have an iPhone 4s and an iPad 3 both running on iOS 9.2.1, I am facing a problem since last couple of days, my photos from my iPhone and iPad are not getting synced with each other using same ID on iCloud. Which means my photo on iPhone is not showing on my iPad and vice-a-versa. I am on the same Wi-Fi network using the same iCloud ID and everything. Both the devices have photo stream and iCloud sharing everything turned on.Yet my photos are not getting synced on both devices. Mean while I tried to isolate the problem and do some R&D, I found that my photos on my iPhone are getting uploaded on the iCloud with the same ID but my photos taken on the iPad are not getting uploaded on the iCloud both using the same iCloud ID. So my iPad is not communicating with the iCloud. I tried signing in and out of iCloud on my iPad, but it did not help the problem still persists. How do I solve this problem? What can I do?