Growth in the small cell sector has been slow and filled with issues. The major three carriers are less focused on small cell buildout efforts, so most of the attention on small cells comes from Crown Castle, the only tower company that has invested heavily in small cells. "I think that business is going to be marked forever by a lumpy and chunky awarding of small cells," said Crown Castle CEO Jay Brown during a recent quarterly earnings call. "It's very different than the tower business in terms of the way the customers award small cells."