Sony Mobile believes in waterproof smartphones so much it is looking to introduce the process and feature to the entry- and mid-range market. It has reported been seeking cooperation with component suppliers in order to produce waterproof phones for less that $300, (£177) claims Digitimes.

Sources from within Taiwan's handset component supply chain are credited with the leak - an ironic turn of phrase. They say that the brand will push the market at that level and others will soon follow.

Samsung, LG, HTC, Motorola, Lenovo and K-Touch have all produced waterproof handsets in the past are are likely to also expand their portfolios.

Digitimes says that Taiwan-based ODMs are ready to produce waterproof smartphones at low cost as they will help "ramp up sales" for themselves and other clients as well.

READ: Sony Xperia Z2 review

Sony's latest flasghip phone, the Xperia X2, features IP55 and IP58 compliance. That means it is able to be kept in water up to 1.5m in depth for up to 30 minutes and still operate, as long as all ports and covers remain fully closed.