Fixed phone after one minute (8)
I believe the answer is:
immobile
'fixed' is the definition.
('immobile' can be similar in meaning to 'fixed')
'phone after one minute' is the wordplay.
'phone' becomes 'mobile' (I've seen this before).
'after' says to put letters next to each other.
'one' becomes 'i' (Roman numeral).
'minute' becomes 'm' (abbreviation).
'i'+'m'='im'
'mobile' put after 'im' is 'IMMOBILE'.
(Other definitions for immobile that I've seen before include "Motionless" , "Incapable of motion" , "rooted" , "Not going anywhere" , "stuck in the station, maybe" .)