Google has confirmed that its Project Ara modular smartphone was too costly & ambitious to make modular phones a reality. Google, in May, said that the phones would ship this fall. The decision was made by Google hardware chief Rick Osterloh as he was trying to deal with the seemingly disorganised product line up.
The concept was brought forth by Google's experimental ATAP group under ex-chief Regina Dugan, who now works for Facebook.
Ara was a smartphone which could have various modules attached, rearranged & replaced in it within seconds.
Google might still license out the projects technology to other manufacturers.