Conclusion
Overall, the NIU Niutek 3.5B positions itself as a basic, entry-level smartphone. It's geared towards users prioritizing budget over broad functionality and advanced features. While it encapsulates essential smartphone capabilities, its outdated hardware and software will not appeal to those accustomed to the speed and versatility of modern smartphones. However, for those looking for simplicity, a dual-SIM capability, and solid battery life, it offers a straightforward experience.