The agreement with administrator PwC comes after Vodafone said on Friday it would buy another 140 stores, safeguarding 887 jobs.
Dixons Carphone has already said it will take on the 800 staff who worked at 160 Phones 4u sites within Currys/PC World stores.
Rob Hunt, joint administrator and PwC partner, said: "It is with much regret that we have today made the difficult decision to close a large number of stores.
"It is a very sad day for the staff working at those locations and our thoughts are with them.
"We will make every effort to help the affected staff, working with the Phones 4u HR team over the coming days to support employees."
Breakdowns of stores closing will be available tomorrow, administrators said.
