(Telecompaper) OnePlus has opened up sales of its smartphone to the general public and no longer requires an invite to purchase the OnePlus One. Earlier this year it started allowing open sales every Tuesday, and now the phone will be freely available to buy any day of the week from the OnePlus website. The company said it's sold over 1 million of the phones since the launch a year ago and grown to over 700 employees. It's now preparing to launch its next device, the OnePlus Two smartphone, which will launch later this year, initially with invites too.