Smythe secured his only target for eight yards during Thursday's 31-10 loss to the Bills.
Smythe restructured his contract with the Dolphins on Monday, Tom Pelissero of NFL Network reports.
Smythe secured three of four targets for 12 yards during Saturday's 26-7 wild-card loss to the Chiefs. Across 16 regular-season appearances, he racked up 35 catches for 366 yards (43 targets) without a touchdown.
Smythe caught three passes for 54 yards on three targets in Sunday's 56-19 loss to the Ravens.
Smythe secured all five of his targets for 56 yards during Sunday's 22-20 win over the Cowboys.
Smythe (ankle) doesn't have an injury designation for Sunday's game against the Cowboys, Travis Wingfield of the Dolphins' official site reports.
Smythe (ankle) was a limited practice participant Thursday.
Smythe secured all four of his targets for 32 yards during Sunday's 30-0 win over the Jets.
Smythe secured two of three targets for 16 yards during Monday's 28-27 loss to the Titans.
Smythe (ankle) does not carry an injury designation and is cleared to play Monday against the Titans, Travis Wingfield of the Dolphins' official site reports