gulfnews: Instant messaging app WhatsApp, just like every other year, is set to pull its messaging services for some smartphones, leaving many users without the app in just a day, The Independent reported. 

The Meta-owned messaging app continues to bring new updates, however, some of the users with smartphones that are running on old operating systems will become incompatible after December 31 (today). 

The company will end its services for the smartphones listed below that have outdated operating systems and will be unable to support the upgraded version of the messaging app with future updates. 

Users will get a warning message before the app stops working on their phones. 

"Devices and software change often, so we regularly review what operating systems we support and make updates," said a statement issued by WhatsApp. 

"These devices also might not have the latest security updates, or might lack the functionality required to run WhatsApp. To choose what to stop supporting, every year we, like other technology companies, look at which devices and software are the oldest and have the fewest number of people still using them."    

If you want to update your operating system on an iPhone, go to the "general" settings and select "software update. 

Here is a list of phones: 
iPhone 5
iPhone 5c
Archos 53 Platinum
Grand S Flex ZTE
Grand X Quad V987 ZTE
HTC Desire 500
Huawei Ascend D
Huawei Ascend D1
Huawei Ascend D2
Huawei Ascend G740
Huawei Ascend Mate
Huawei Ascend P1
Quad XL
Lenovo A820
LG Enact
LG Lucid 2
LG Optimus 4X HD
LG Optimus F3
LG Optimus F3Q
LG Optimus F5
LG Optimus F6
LG Optimus F7
LG Optimus L2 II
LG Optimus L3 II
LG Optimus L3 II Dual
LG Optimus L4 II
LG Optimus L4 II Dual
LG Optimus L5
LG Optimus L5 Dual
LG Optimus L5 II
LG Optimus L7
LG Optimus L7 II
LG Optimus L7 II Dual
LG Optimus Nitro HD
Memo ZTE V956
Samsung Galaxy Ace 2
Samsung Galaxy Core
Samsung Galaxy S2
Samsung Galaxy S3 mini
Samsung Galaxy Trend II
Samsung Galaxy Trend Lite
Samsung Galaxy Xcover 2
Sony Xperia Arc S
Sony Xperia miro
Sony Xperia Neo L
Wiko Cink Five
Wiko Darknight ZT