WhatsApp has recently updated its minimum system requirements. This means that it would end support for the older devices. WhatsApp on its page updated its requirements and revealed that it would drop support for Android 4.0.3 Ice Cream Sandwich, iOS 9, and KaiOS 2.5.0 from November 1, 2021.
In case you do not upgrade your phone before November 1, WhatsApp will stop working on your phone, and you will not be able to send or receive messages on the app.
Here is the list of phones that will no longer support WhatsApp:
Apple: iPhone SE (1st Gen), 6s and 6s Plus
Samsung: Samsung Galaxy Trend Lite, Galaxy Trend II, Galaxy S2, Galaxy S3 mini, Galaxy Xcover 2, Galaxy Core, and Galaxy Ace 2
LG: LG Lucid 2, Optimus F7, Optimus F5, Optimus L3 II Dual, Optimus F5, Optimus L5, Optimus L5 II, Optimus L5 Dual, Optimus L3 II, Optimus L7, Optimus L7 II Dual, Optimus L7 II, Optimus F6, Enact, Optimus L4 II Dual, Optimus F3, Optimus L4 II, Optimus L2 II, Optimus Nitro HD and 4X HD, and Optimus F3Q
Huawei: Huawei Ascend G740, Ascend Mate, Ascend D Quad XL, Ascend D1 Quad XL, Ascend P1 S and Ascend D2
Sony: Sony Xperia Miro, Sony Xperia Neo L, and Xperia Arc S
Other brands: Alcatel One Touch Evo 7, Archos 53 Platinum, HTC Desire 500, Caterpillar Cat B15, Wiko Cink Five, Wiko Darknight, Lenovo A820, UMi X2, Faea F1, and THL W8