Finding a powerful smartphone without exceeding a 400 GBP budget is easier than ever, with brands offering premium displays, fast processors, capable cameras and long-lasting batteries at increasingly competitive prices. This selection brings together the best mobiles available for under 400 GBP, comparing performance, design, software, charging speeds and everyday usability. Leading the ranking is the POCO X8 Pro Max, a standout option that combines flagship-inspired hardware with excellent value. Whether you prioritise gaming, photography, multimedia or all-day reliability, these models prove that an affordable phone can still deliver a genuinely high-end experience for demanding users today. Last update