Performance
Under the hood, the Z4 runs Tizen 3.0 on a quad-core 1.5 GHz processor, supported by 1GB of RAM. While this setup is modest, it can handle basic applications and tasks efficiently. However, it might struggle with multitasking and more demanding applications. The internal storage is limited to 8GB, but the inclusion of a microSDXC card slot for storage expansion is a practical feature, though it uses a shared SIM slot, which may be a consideration for dual SIM users.