I brought a lenovo tab2 A7-20 tab .it had black display.Lenovo take 2 month 15 days to get repair.Lenovo is bad brand who has lazy employees to give only reference no but not solve problem .They are such annoying that I thought that during purchasing, selection of Lenovo band is my wrong decision.So be careful.In serial problem in tab lenovo will not replace your product, They only repair of your tab.Now I am thinking they take my hard earned money.