How does the iPhone SE 4's modem compare to other smartphones without mmWave support

The iPhone SE 4's modem will focus on sub-6 GHz networks, lacking support for mmWave technology[1]. This means that in areas where mmWave is deployed, such as stadiums and downtown areas, the iPhone SE 4 may experience lower peak speeds compared to phones like the iPhone 16 Pro that use Qualcomm’s Snapdragon X75 modem[1]. While real-world download speeds on typical sub-6 networks may be similar, the absence of mmWave support could be a noticeable drawback in certain locations[1].

Furthermore, Apple's first-generation modem is expected to have fewer carrier aggregation features than Qualcomm's Snapdragon X75[2]. It will support four-carrier aggregation (4x CA), capping peak downloads around 4 Gbps under ideal conditions, whereas the Snapdragon X75 can aggregate more carriers, allowing for potentially higher speeds[1].

Despite these limitations, the iPhone SE 4 modem's integration with Apple's A18 chip could offer advantages[1]. By coordinating modem power states with the SoC’s Neural Engine, Apple may compensate for the modem's less advanced manufacturing node, potentially delivering decent battery life during sub-6 usage[1]. Also, Apple anticipates saving money using its own modem[4].