Facebook had such a strong influence on the operation of Android-smartphone batteries that vice-president of products Chris Cox in 2015
forced his employees to throw out iPhones and use Android until they figure out the problem.
But the problem remained, and several people in turn found out its scale.

A Reddit user checked the speed of fifteen applications while Facebook and Facebook Messenger were on the smartphone, and after they were deleted.
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Applications 20 Minuten, Kindle, AnkiDroid, ASVZ, Audible, Calculator, Camera, Chrome, Gallery, Gmail, ricardo.ch, Shazam, Spotify, Wechat, Whatsapp
were launched 15 times and tested the speed of work with
DiscoMark . The lack of FB and Messenger increased the speed of other applications by 15% in the case of the LG G4.
The Guardian journalist
checked it on his phone and replaced Facebook with
the Metal app , which works simultaneously with Facebook and Twitter. As a result, by the end of the day, the Huawei Nexus 6P has a 20% more battery charge than usual. At the same time, he used the same alerts and settings that he used in the official Facebook application.
A Facebook spokesperson for The Guardian's request responded that the company had received complaints from users of the Android application on the topic of speed, and is working on this issue. About the battery life, he did not mention.
