Originally announced in 2012 and featuring support for speeds of up to 150 MBPS and improved LTE networking, the Category 4 chip would mark an improvement over the Qualcomm MDM9615 chip found in the iPhone 5s and iPhone 5. The MDM9625 is also more durable than its predecessor, allowing for lower temperatures under heavy performance thanks to a refined 28-nanometer production process.
Along with those features, the MDM9625 includes support for next-generation LTE Advanced networks, which have yet to roll out in most parts of the world. News of the MDM9625's inclusion in the iPhone 6 also contrast a detailed yet sketchy report from VentureBeat posted earlier this month, which stated that the iPhone 6 would include a Category 6 LTE modem capable of 300 MBPS throughput speeds. That radio however was said to not include support for LTE-Advanced networks as featured in the MDM9625.