Performance and Storage
Under the hood, the Siemens U10 provides 2MB of internal storage, which may seem minuscule compared to contemporary devices but for its time, was sufficient for storing contacts, basic applications, and a few ringtones. Enabling an expansion option via an MMC/SD card slot with a 32 MB SD card included, the phone offered additional storage flexibility, a valuable feature for users who hoped to expand their multimedia libraries or data storage.