When evaluating cheap mobile phones, focus on the Processor (CPU) and RAM/ROM configuration. For entry-level devices, a minimum of 4GB RAM and 64GB ROM is recommended to ensure basic app functionality. Verify the Network Bands (e.g., 4G LTE B1/B3/B7/B20 or specific 5G bands) to ensure compatibility with the target country's carriers. Additionally, prioritize Battery Capacity (minimum 4000mAh - 5000mAh) and Screen Resolution (HD+ at least) to meet consumer expectations for longevity and display quality.