Sony CMD-J7 Operating Instructions Manual page 16

If you cannot obtain service
• If you cannot obtain network service the
reception strength may be too weak. Move
to a higher elevation, a window or an open
space and make sure that there is nothing
obstructing the antenna.
• Once you have switched on your phone do
not cover the internal antenna area above
the finger Stop with your hand.
Roaming
If you are out of range of your "Home"
Network Operator, especially when abroad,
another network operator may be selected
automatically, subject to signal strength and
roaming agreements between network
operators.
16 GB