SystemPlus Consulting compares ambient light sensors (ALS) and proximity sensors design in several generations of Apple and Samsung smartphones: Samsung Galaxy S7, S8, and S9 and Apple iPhone 7, 8, and X:
"S
amsung has chosen to combine the two sensors in a single component, whereas Apple made the choice to keep them separate. Over the years, Samsung has improved the performance without changing its packaging footprint. Apple has kept the same supplier, STMicroelectronics, for its proximity sensor. However it has added features to each new generation, as in the latest the iPhone X, where the proximity sensor is combined with a flood illuminator. In this new iPhone the ambient light sensor is still supplied by ams, but has a multi-spectral feature."
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| Samsung Galaxy S9 combined proximity/ALS sensor |
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| Apple iPhoe X multi-spectral ALS |
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