The shared foundation is solid on both devices — 5G, NFC, USB-C, dual SIM, GPS, and a fingerprint scanner are all present across the board. Where things diverge is in a handful of specific but meaningful features. The Realme P3 supports Wi-Fi 6 (802.11ax) in addition to Wi-Fi 4 and 5, while the C75 5G tops out at Wi-Fi 5. Wi-Fi 6 delivers better throughput and significantly improved performance in congested environments — like homes with many connected devices — making it a worthwhile upgrade for users on compatible routers.
The sensor and expandability split is where the two phones pull in opposite directions. The C75 5G includes a microSD card slot, a practical advantage for users who want to expand storage affordably or transfer files easily — something the P3 entirely lacks. The P3 counters with a gyroscope and an infrared sensor, neither of which the C75 5G carries. The gyroscope unlocks accurate motion-based controls in games and AR applications, while the IR blaster lets the phone function as a universal remote for TVs and appliances. One minor note: the C75 5G edges ahead on Bluetooth 5.3 versus the P3's 5.2, though the practical difference between these adjacent versions is negligible for most users.
This category is closely contested, but the Realme P3 holds a slight overall edge. Wi-Fi 6 and the gyroscope are broadly useful upgrades, and the IR blaster is a genuine convenience feature. The C75 5G's memory card slot is a meaningful win for storage-focused users, but it does not fully offset the P3's connectivity and sensor advantages.