Wireless connectivity reveals another layer of separation between these two phones. The Honor 400 5G supports Wi-Fi 6 (802.11ax), while the Honor X7d 5G tops out at Wi-Fi 5 (802.11ac). Wi-Fi 6 delivers higher throughput, better performance in congested environments such as offices or public spaces, and improved power efficiency during wireless use — advantages that become more meaningful as Wi-Fi 6 routers grow more common in homes. The 400 5G also carries a newer Bluetooth 5.4 versus the X7d's 5.1, offering improved connection stability and slightly better range for wireless peripherals and audio devices.
Two hardware additions exclusive to the 400 5G stand out: a gyroscope and an infrared sensor. The gyroscope enables accurate motion-based controls — essential for immersive gaming, augmented reality apps, and precise navigation — which the X7d cannot support without one. The infrared sensor allows the 400 5G to function as a universal remote control for TVs and home appliances, a niche but genuinely practical convenience. The X7d has neither. On the cellular side, the 400 5G's peak download speed of 5000 Mbits/s versus the X7d's 2500 Mbits/s suggests support for more advanced 5G bands, though real-world speeds depend heavily on carrier infrastructure.
Both phones share a solid connectivity baseline — dual SIM, NFC, USB Type-C, GPS with Galileo support, fingerprint scanner, and accelerometer — so everyday essentials are equally covered. But the Honor 400 5G takes a clear overall edge in this category, adding Wi-Fi 6, a newer Bluetooth version, a gyroscope, and an infrared blaster that the X7d simply does not have.