N4BB

ALT+I – incoming messages
ALT+O – outgoing messages
ALT+P –call log only
ALT+S – SMS only
ALT+V – voice messages only

Full QWERTY (7520, 87xx, 88xx, etc):

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E – errors
R – reply
T – top
B – bottom
N – next
P – previous
U – next unread
S – search
C – compose
V – save

SureType (7100i, 81xx, etc):

QW – Reply
OP – Forward
AS – Reply All
ER – Top
CV – Bottom
Space – Page Down
UI – Page Up
BN – Next
TY – Previous