The cellular and wireless gap is significant. The Honor 400 5G supports 5G, unlocking download speeds up to 5000 Mbps, compared to the Honor X5c's 4G-only connectivity capped at 300 Mbps. For users in 5G-covered areas, this means dramatically faster mobile data for streaming, downloads, and cloud tasks. On Wi-Fi, the 400 5G adds Wi-Fi 6 (802.11ax) support on top of the older standards both phones share, offering better throughput and reduced congestion on busy networks — an advantage the X5c, which tops out at Wi-Fi 5, cannot match. Bluetooth tells a similar story: 5.4 on the 400 5G versus 5.1 on the X5c, with newer versions generally offering improved connection stability and efficiency.
Beyond raw speeds, the 400 5G carries a broader sensor and feature set. It includes NFC — essential for contactless payments and quick device pairing — which the X5c entirely lacks. It also adds a gyroscope, compass, and infrared sensor, expanding its usefulness for navigation, motion-sensitive apps, and IR remote control functionality. The X5c counters with one practical advantage: a microSD card slot for expandable storage, which the 400 5G omits. Given the 400 5G's 512 GB built-in storage this trade-off is less painful, but for users who rely on swappable storage it is worth noting.
The Honor 400 5G holds a clear and broad advantage in this category. Its 5G support, Wi-Fi 6, NFC, newer Bluetooth, and richer sensor suite outweigh the X5c's lone expandable storage benefit across virtually every connectivity scenario a modern user is likely to encounter.