I did not anything with r1. Just put it on desk, but after 2? or 3 days battery is dead
2 or 3 days?
What smart device do you have that doesn’t generally need charging after a full day - with or without use?
If you have a sim card in the device, its constantly checking for connection and that can drain the device. If its just connected to wifi, its doing the same.
If you want to save the battery power off the device. If not it’s normal for a battery to run down after a couple of days on an electronic device. Especially one that is running a processor and WiFi.
even without screen on?
Yes, even without the screen on. Your phone does the same. Overall, obviously, battery tuning can happen and I am sure it will!
Phones and the android or iOS system have had plenty of time to adapt their battery processes and other system processes to make this function better.
I understand this is built on an open source android system, but it doesn’t mean it can be as tuned, yet.
My Honor phone 2 days without using it much, r1 about the same. Who does not charge their phone every night?