beta-D-fructofuranosyl alpha-D-mannopyranoside 6(F)-phosphate + H2O = beta-D-fructofuranosyl alpha-D-mannopyranoside + phosphate Inhibited by the phosphatase inhibitors fluoride, molybdate and orthovanadate. Carbohydrate metabolism; mannosylfructose biosynthesis; beta-D-fructofuranosyl alpha-D-mannopyranoside from D-fructose 6-phosphate and GDP-alpha-D-mannose: step 2/2. By salt. Belongs to the sucrose phosphatase family.