Fake phone card I hear you and others knocked up (8)
I believe the answer is:
simulate
'fake phone' is the definition.
'simulate' can be an answer for 'fake' (thesaurus). I am unsure of the 'phone' bit.
'card i hear you and others knocked up' is the wordplay.
'card' becomes 'sim' (as in a SIM card).
'i hear' shows a homophone (sound like).
'and others' becomes 'etal' (short for 'et alia', 'and others' in Latin).
'knocked up' shows that the letters should be reversed in order.
'you' sounds like 'u'.
'etal' back-to-front is 'late'.
'sim'+'u'+'late'='SIMULATE'
Can you help me to learn more?
(Other definitions for simulate that I've seen before include "Reproduce conditions of by means of model" , "Amulets I use to imitate condition of" , "Assume" , "Imitate, reproduce" , "pretend" .)