There are over 3 billion active Android devices
https://www.theverge.com/2021/5/18/22440813/android-devices-active-number-smartphones-google-2021
https://9to5google.com/2021/05/18/android-now-powers-over-3-billion-devices/

"That number is a steady increase from the 2.5 billion devices reported in
2019 and the 2 billion shared in 2017. For an interesting point of
comparison, Google Play Services, the core app responsible for much of what
makes Android great, has been installed a whopping 10 billion times."

"Play Services is generally what Google uses to measure how many devices run
Android. This means that devices without Google Play Services, such as
Android devices in China or newer phones from Huawei, aren't counted in the
new 3 billion total."

"Apple announced over 1 billion active iPhones in the wild earlier this year
(a mere third of the number of Android devices). It's a bold reminder that
Apple's smartphone and tablet dominance is largely limited to the United
States and a few other regions. For everywhere else, it's Android."

"The number is taken from the Google Play Store, which doesn't take into
account devices based on Android but that use alternative stores, including
Amazon Fire devices and the myriad of Chinese Android-based devices that
avoid using Google's apps altogether. That means the number of active
Android devices is likely much higher than what Samat announced on the live
stream."
--
J. B. Wood e-mail: arl_123234@hotmail.com