Nokia has been using the Symbian OS on its best devices for years now.
As time went by, Symbian kept improving as well, until the market was
stormed by the new type of phones led by the iPhone. Nokia’s attempt to
join the race began with the pretty much failed model 5800, which was
based on Symbian OS s60v5. N97 followed and improved the overall
impression significantly. When Google Android platform surfaced, the
competition became much more serious all of a sudden, so Nokia had to
opt for a completely new concept in the form of Maemo 5 OS, promoted by
the model N900…”
Besides the fact that some of its solutions place it in the range of the
most user-friendly phones, each portion of the phone contains a small
flaw or two.