Conclusion
The Asus Zenfone 4 ZE554KL stands out as a well-rounded device in the mid-range smartphone market of its time. It combines a premium design with reliable performance, capable cameras, and rich connectivity features. Priced at around 350 EUR, it offers substantial value, particularly for users who appreciate solid build quality and a comprehensive feature set. Though the phone is slightly dated by modern standards, it remains an attractive option for those seeking a dependable and stylish device without venturing into the higher price brackets.