In terms of physical footprint, the two devices are nearly twins: both stand at 164.3 mm tall with almost identical widths (~74.5 mm), and both weigh within 1 gram of each other (180 g vs 179 g). That difference is imperceptible in daily use, so neither phone has a meaningful ergonomic edge based on weight alone. Where a subtle but real distinction emerges is in thickness: the Tecno Camon 40 Pro 5G is 7.3 mm thin versus 7.6 mm for the Infinix Note 50s 5G. While 0.3 mm sounds trivial, it contributes to a noticeably smaller overall volume (89.47 cm³ vs 93.03 cm³), giving the Camon 40 Pro a marginally sleeker profile in the hand and pocket.
The most consequential design difference, however, is water protection. The Infinix Note 50s 5G carries an IP64 rating, which means it is fully dust-tight but only splash-resistant — it can handle rain or accidental spills but should not be submerged. The Tecno Camon 40 Pro 5G steps up to IP68, the gold standard for consumer smartphones, certifying it as both dust-tight and submersible in water beyond one meter. In practice, IP68 means you can drop this phone in a sink, puddle, or pool and retrieve it without panic — a substantially higher real-world safety margin than IP64 offers.
Neither device has a rugged build or foldable form factor, so those are non-factors here. Overall, the Tecno Camon 40 Pro 5G holds a clear design edge: its superior IP68 waterproofing is a meaningful, everyday-relevant advantage, and its marginally slimmer chassis is a modest but welcome bonus.