Not buying a phone at all would be the RMS-compliant option.

"I refuse to have a cell phone because they are tracking and surveillance devices." -- http://stallman.org/rms-lifestyle.html

> Because if we're going to pick off every phone manufacturer for every misdeed they've done, there won't be any left to actually buy a phone from

Which illustrates why it's typically not practical to live your life like Stallman does.

To throw just any one name into the discussion - what about Asus? I haven't heard anything bad about them since they've twittered that booth babe picture.