Why google say that change your smartphone before 27 September 2021.

Change these Smartphones immediately, next month it will be useless, Gmail, YouTube and other applications will not work, know why

Google will no longer support logging in on Android phones running version 2.3.7 or earlier as of September 27. 

I mean, this phone will become useless. If you also use this version or an earlier version, update or change the phone immediately.

These Smartphones will become useless after September 27.

Google Apps will not run on Android phones with version 2.3.7 or earlier.

The user can use Gmail or YouTube through the browser.

Google has made a great decision. Google will no longer support logging in on Android phones running version 2.3.7 or earlier. 

An email sent by Google to the user shows that this change will be effective as of September 27. In the email, Google has advised the user to upgrade to at least Android 3.0 Honeycomb. 

This change will affect the system and application signature. But the user will be able to run Gmail, Google Search, Google Drive, YouTube and other Google services through the browser.

In their report, 9to5Google shared a screenshot of an email sent to users who will likely be affected by this change. The number of people running older versions of Android is likely to be much less. 

Google is clearly doing this to help protect user data and keep accounts secure. Starting on September 27, users running Android version 2.3.7 and earlier will receive a "username or password error" every time they try to log into any of the Google applications loaded on the phone.

These emails appear as a red flag to some of these users who are still using older software versions, urging them to update their software or switch phones.

After September 27, the report said that users of older versions of Android would get errors when trying to log into Google products and services such as Gmail, YouTube, and Maps. 

They will also get an error if they try to add or create a new Google account or do a factory reset and try to log in again. If the user changes their password or username, an error will also appear.

Android v2.3.7 users will be left with no options. No Google app will work. To use Google Apps, you will need to use an updated phone above this one.