(ShareCast News) - Shares in Zamano rocketed after the company confirmed it has received a preliminary takeover approach at an offer price of €0.20 per Zamano share.Zamano, which offers mobile business solutions including a high-volume messaging gateway and secure mobile payments, said the offer was highly conditional on confirmatory due diligence."Accordingly, there can be no certainty that any offer will be made nor as to the terms of any offer," it said.The company said further announcements will be made as appropriate and shareholders are strongly advised to take no action for the time being.At 1236 BST, Zamano shares were up 26.4% at 12.32p.