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Support for specific 3G & 4G frequencies depending on variant and region. Rear main camera: 1.25 um pixel size. Secondary rear camera: 1.12 um pixel size. PDAF, face recognition. Front camera: 1.0 um pixel size, Beautify 4.0, face recognition. When two SIM cards are used simultaneously, the primary SIM supports 4G+/4G/3G/2G calling and data while the secondary SIM supports only 3G calls.