Why I'm not able to download over 100 MB file using cellular data?

Hello,

I'm using iPhone 6 with latest iOS 8.4, my question is why I'm not able to download over 100 MB files using my cellular data? it always says that I need to connect to Wi-Fi to download over 100 MB files, please let us select what we want to use for downloading, you may just display a warning message to notify that I'm going to use cellular data to download the file, and than it should be my decision whatever I want to use, hope someone is listening and remove this stupid limitation in iOS 9.

Thanks In Advance!!

Zameer