The unveiling of new iPhone 7 by Apple is almost set

Wednesday is a big day in the tech world. Apple is holding its annual launch event where the new iPhone 7 is expected to be revealed.

The much heralded device comes just as rival Samsung has recalled its flagship Note 7 over battery issues.

 iPhone7

iPhone6 and 7 comparison

The tech rumour mill has been running at fever pitch about possible new iPhone features and gadgetry.

Many commentators expect Apple to have ditched the headphone jack, leaving only one port.

That would force consumers to use Bluetooth headphones or buy those compatible with Apple's Lightning port that is also used for charging.

However, old gear won't be completely obsolete, as Apple is expected to include an adapter jack.