>Google also provided clarification on the purposes of some of
the data collection observed. Namely:
>1) The message hash is collected for detecting message
sequencing bugs.
>2) Phone numbers are collected to improve regex pattern
matching for automatic recognition of one-time pass-
words sent over RCS. Messages automatically recognizes
incoming One-Time Password (OTP) codes to avoid the
user having to fill them in. This can be a frequent point
of failure and the phone number data is used to improve
recognition by providing ground-truth based on known
OTP sender numbers.
> 3) The ICCID data is used to support Google Fi.
> 4) Firebase Analytics logging of events (not including phone
numbers) is used to measure the effectiveness of app
download promotions (for Messages and Dialer specif-
ically). Namely, to measure not only whether the app
was downloaded but also whether it was used once
downloaded.
>Google also provided clarification on the purposes of some of the data collection observed. Namely:
>1) The message hash is collected for detecting message sequencing bugs.
>2) Phone numbers are collected to improve regex pattern matching for automatic recognition of one-time pass- words sent over RCS. Messages automatically recognizes incoming One-Time Password (OTP) codes to avoid the user having to fill them in. This can be a frequent point of failure and the phone number data is used to improve recognition by providing ground-truth based on known OTP sender numbers.
> 3) The ICCID data is used to support Google Fi.
> 4) Firebase Analytics logging of events (not including phone numbers) is used to measure the effectiveness of app download promotions (for Messages and Dialer specif- ically). Namely, to measure not only whether the app was downloaded but also whether it was used once downloaded.