The world’s thinnest phone was just revealed, but a new iPhone 17 Air leak suggests it could be even slimmer

• Tecno has revealed the world’s thinnest slab phone, the 5.75mm Spark Slim
• A new iPhone 17 Air leak suggests Apple will beat this with a 5.44mm chassis
• We’re still waiting for any official information about the iPhone 17 Air

Chinese phone maker Tecno has revealed the world’s thinnest slab phone at MWC 2025, but a new leak suggests the much-rumored iPhone 17 Air could be even thinner.

The Tecno Spark Slim measures just 5.75mm thick at its thinnest point, not including the protruding camera bump, and packs an impressive spec sheet into its svelte frame – the Spark Slim sports a 6.78-inch OLED screen with 144Hz refresh rate, dual 50MP main and ultra-wide cameras, and a 5,200mAh battery capacity.

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