[deanhills]

Google Play Store runs automatic updates almost every day in the background. This was making my phone battery ran out quickly, consumed my mobile data quota, and also slowing down my phone.

Aha. I need to check up on that as well. I disabled notifications for e-mails as my phone was hammered with those and at night my whole room was illuminated with notification lights. But I didn't think of Google Play Store which is being renewed almost daily when my phone gets to a WiFi system.

If I disabled Google Play - will that effect my whatsapp?

Agreed. The fact Google Play is not on a device like for Huawei would make it more attractive for me. I also don't own a Huawei but it has a great battery record, so will look into it as an option if I should need to change my hardware in the future.