Note:
- use same Google Account on both phones,
- Backup and restore your Whatsapp data to/from online backup.
I do not really like sending my data online, so I prefer to do an offline transfer. I know, kinda "Old-School", but yeah, it's a better way to avoid loss and breach of your personal data. And in addition, I use different Google account on both phones.
-
On the old phone:
- Make a backup of your Whatsapp data
- Connect your smartphone to the PC using a USB cable.
- Copy somewhere the Whatsapp files from: >> Internal storage >> Android >> media >> com.whatsapp >>
-
On the new phone:
- connect it to the PC via an usb cable
- copy over the above files to the same directory on the new phone
- Open Whatsapp application
- register using the same number from the old phone. You might need to verify via sms token code or a call
- make sure to use the "restore from backup" option as this will show only once.
Enjoy your chat on your new phone :)