How to install Playstore on a device on which it is not already installed? I bought a VivoY13 phone from Chinese Dealer.  But Google playstore is not pre-installed.

And when you try to install it shows errors.

Does anyone have solutions or faced  similar situation?
It seems that you are a victim of purchasing a tampered device.   

Why do scammers and hackers sell tampered device's ?   


Copying sensitive data ( bank details )    
Hacking user's information     
Stealing passwords and other security data    




How do they steal data ?    


The seller purchases a new device, then gains root access and installs hack software on the device.    ( malware, spyware etc... ) and sells it on eBay and other sites.     


Is this a serious issue ?
YES.  You should NEVER use a device with hacked firmware for anything... it could be logging everything you do... 


text messages 
internet access
call logs and recordings   
everything your device has access to    




What can i do to remove the hacks    


Download an OFFICIAL stock ROM ( Firmware )
YOUR DEVICE FIRMWARES - NeedRom.com
Download the Latest SP Flash Tool ( most MTK china phones use SP Flash Tool)    
Install your STOCK OFFICIAL firmware following the guide on needrom.com   


Why would Google Services be missing ?
Usually this is to comply with Copyright laws, the seller isn't legally aloud to sell you proprietary software on a modified system.   

Also, Google Play Protect will alert the user of any suspicious applications on the device, and also check for ( Certified Device ) 

Certified Device !!!
After installing your OFFICIAL STOCK Firmware, you can check the integrity of the system using the built-in recovery, just boot into recovery and do a system integrity check.... After all is OK, boot the device and open Googles Play Store,   Navigate to settings and scroll to the bottom, at the bottom of the settings screen in the Play Store, it'll say if your on a Certified Device or not... 

If it Say's certified device, and you have all OK in system integrity check, your good to go and all services like Android Pay will be accessible.   

The flashing instructions are usually basic, but be careful NOT to use Firmware Upgrade... Only Ever Download, in SP Flash Tool.    

Good Luck, I've had many tampered with devices from online purchases, but all are fixable :)
Especially Chinese MTK models.