Due to the recent arguments between Apple and Samsung, Apple might be switching their main processor supplier. At the moment, they are using mainly Samsung’s 45 nm chips and TSMC (Taiwan Semiconductor Manufacturing Company) is the alternative manufacturer of their A5 chips. TSMC is also ready to produce A5 28 nm processors which might give Apple the edge in mobile processing power.
The reason for Apple and Samsung “splitting up” is probably the complicated patent-lawsuit-position they are in at the moment. As we recently found out Apple are suing Samsung even in their home-country South Korea. Even though Apple are one of Samsung’s larger clients,they’re only generating a small part of their overall income.