Related Clues:

• Quartet after F
• Telephonic trio
• 4, on the phone
• F-J linkup
• Letters near 4 on a keypad
• 4, on a touchtone keypad
• F-J link
• 4, on a keypad
• Letters after F
• Four, on phones
• Post-F trio
• Letters near 4, on a touchtone keypad
• 4 on a telephone
• Three for 4
• Run of letters