The connectivity foundation is largely shared between these two devices: both support 5G, NFC, dual SIM, expandable storage, USB Type-C, and an identical suite of sensors including GPS, gyroscope, accelerometer, and compass. The theoretical download speeds are also functionally equivalent — 3,270 vs 3,300 Mbits/s — a gap too narrow to ever notice in real use. For most everyday connectivity needs, either phone covers the bases equally well.
The meaningful gaps favor the Infinix Note 50x 5G. Most notably, it supports Wi-Fi 6 (802.11ax), while the Realme P3x 5G tops out at Wi-Fi 5. On a compatible router, Wi-Fi 6 delivers better throughput, lower latency, and more efficient performance in congested environments with many connected devices — a practical advantage in busy homes or offices. The Infinix also carries a slightly newer Bluetooth 5.4 versus the Realme's 5.3, a marginal difference in isolation, but consistent with its broader connectivity positioning. More distinctly, the Infinix includes an infrared sensor — absent on the Realme — which allows the phone to function as a universal remote for TVs and home appliances, a small but genuinely useful convenience feature.
The Infinix Note 50x 5G holds the edge here. Wi-Fi 6 support is a tangible future-proofing advantage as compatible routers become more common, and the infrared sensor adds a practical utility the Realme simply lacks. The Realme closes no meaningful gap in return, making this a one-sided category.