When evaluating mobile phones, prioritize the Processor (SoC), such as MediaTek or Snapdragon chipsets, to ensure performance stability. Verify the RAM and ROM configurations (e.g., 8GB+128GB) meet current market demands. Crucially, check Network Band Compatibility; ensure the device supports 4G LTE or 5G bands specific to your target country (e.g., B1/B3/B7/B20 for Europe or B2/B4/B12 for North America). Additionally, confirm the Battery Capacity (mAh) and Fast Charging protocols (like PD or QC 3.0) to ensure competitive edge.