I got a new phone (LG G6) when I upgraded from my LG G3, I used the LG Backup service to move Whatsapp and all content to the new device. I realised that when some people contact me, the messages goes to my old phone (without any sim card installed), and other people's mesagges goes to my new phone. Can you please assist me with this?
Another problem is that after my device is locked for a while, I won't get any notifications from Whatsapp. I have tried various different settings and apps to fix it, but none worked. This is a crutial problem. I don't know if this is an Android Nougat battery saving issue.
Please help me to solve these 2 issues