1. Go to your dialer and enter *#*#4636#*#* to enter Engineer/Service Mode.
2. go to "phone information"
3. scroll down and tap "turn on SMS over IMS" to turn on sms.
4. after that tap "refresh" button and after that tap "update" button to update the new settings..
Hi , why does my ZenFone 3 deluxe get so warm whatever I do, even if I have all my apps closed it still gets warm. Also during charging process.
On Android 6.0 I had not such a big problem with heat producing.
You have to factory reset your device for better functioning. Its always recommended to factory reset after a big update. By big i mean, from one android version to another.