O2 has launched SIM-only and mobile plans as part of its summer sale - but shoppers who are on the lookout for deals, we've found it much cheaper elsewhere. The retailer has launched a summer sale on ...

If you've just finished your mobile contract or you've been out of one for a while then now may be the time to switch to a SIM only deal. A SIM only deal just covers the mobile service, so you're no ...