Two new models with curved screens and new sensors planned for release next year.
Apple is said to be working on two new iPhone designs featuring larger displays and glass screens that curve down at the edges, reports Bloomberg.
New sensors may also be included on the devices that can tell the difference between a light or heavy touch.
The screen size of iPhone has always resulted in the smartphones being overshadowed by rivals such as the Samsung Galaxy range, which has a selection of different sized displays to choose from.
The rumoured phones are to boast a 4.7 inch and 5.5 inch screen making them the largest iPhone to date, and putting them in a better position to compete against larger counterparts.
Dennis Chan, an analyst at Yuanta Financial Holding Co, said: “Screen size is one of the things where Apple has to catch up to the Android Camp.” Samsung recently launched the Galaxy Round – the world’s first curved display smartphone with a 5.7-inch, Super AMOLED, Full HD screen, 7.9mm thickness and a weight of 154g