If you want to delete the Google account from a K900 either to sell your terminal, give it to a relative or friend, recycle it or if you have decided to switch to another Google account, you can do so by following the steps indicated continuation.
When delete the Google account from K900 we deactivate the FRP (Factory Reset Protection) of the operating system Android 4.2 (Jelly Bean), this is a protection that links the Lenovo K900 to a Google account so that when it is rebooted or blocked due to loss or theft, ask for the Google account username and password.
Estimated time: 5 minutes.
1- First step: To delete the Google account go to the settings of your Lenovo, it is the icon of the gear wheel, the settings icon should be on the home screen or in the phone menu, you can access the main menu by dragging your finger from the bottom to the top of the screen.
2- Second step: We go down through the settings of the K900 and look for the section called "Accounts", click to access this section.
3- Third step: All accounts linked to this Lenovo K900 will appear, including in addition to Google accounts the rest of social media accounts such as Instagram, Facebook, TikTok, Twitter, etc. Click on the account you want to unlink from this device.
4- Fourth step: The data linked from this Google account (or the one you have selected) to the Lenovo K900 will appear. Press "Remove account" to continue.
5- Fifth step: A confirmation message will appear to avoid removing an account from the Lenovo K900 by mistake, click on "Remove account" again to confirm. All data on this account will be deleted from the device.
After you delete the account, you may want to reset the K900 to its factory state and thus eliminate all data from the Lenovo, to do this from "Settings" click on "System", then "Reset settings", then "Factory data reset" and finally "Delete all".
This is the method for unlink Google account from Lenovo K900 and erase all your data from the system settings.
Another more drastic method to erase the Google account in a Lenovo K900 would be doing a hard reset or factory reset. It is a drastic method because in addition to deleting the Google account it resets the Lenovo to its factory state and has to re-optimize all applications which takes more time than a simple deletion of Google account.
About the device:
Lenovo K900 is a device with a dimensions of 157 x 78 x 6.9 mm (6.18 x 3.07 x 0.27 in), a weight of 162 grams, a screen size of 1080 x 1920 pixels (~401 ppi pixel density) and a screen resolution of 5.5 inches (~68.1% screen-to-body ratio).
It has a processor Dual-core 2.0 GHz, a graphics card PowerVR SGX544MP2, a RAM memory 2 GB RAM and an internal memory of 16/32 GB.
The Lenovo K900 it comes from the factory with the operating system Android 4.2 (Jelly Bean)