Problem of My Photo Stream If I delete a photo from my photo stream using my phone, then it will be automatically deleted from other devices using same Apple ID or not?
Yes, it will be deleted from all other devices (that is logged in with the same Apple-ID) Photo Stream too. But if the photo also is in the Camera Roll then it won't be deleted from there.

Photo Stream is like a album that is synced between all of your devices over iCloud. A change in the Photo Stream album on one device, will also be seen in the Photo Stream album on all other devices you have one the same Apple-ID.