Apple (AAPL) is planning significant design and format changes for its iPhone lineup and possibly other products, the Wall Street

The iPhone business, which accounts for around half of Apple’s overall revenue, is in a sales slump following years of mostly incremental upgrades to its devices.

The next big upgrade to Apple’s mobile devices could be foldability, according to multiple reports published Sunday. According to The Wall Street Journal, Apple is aiming to launch two foldable devices in the next few years.