[OpenSER-Users] TCP better than UDP??

[lu]

Hi,
I came accros one Nokia-S60 Guideline regarding SIP setting in the
NAT/Firewall traversal section which say:"It is recommended to use TCP
as the transport instead of UDP since even doubled battery life can be
achieved with a UI always connected to a SIP service". 
I need OPenSER users to comment on this since what i know is that UDP is
more reliable transportation.
WBR
lu.