New versions of WhatsApp draw a line on iPhone 4S now that iOS 9 is no longer part of Apple’s systems followed by the publisher. This change is recent, last weekend its page on the App Store still mentioned compatibility with iOS 9. The 4s is the only iPhone that was left on the side during the passage.

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It is only for iPhones that WhatsApp has raised the compatibility threshold this time, things do not change for Android and its version 4.0.3 minimum.