- 01-12-2013, 04:51 PM #1
I just got my Lumia 920 today. I shut-down the phone & then plugged it in to charge. Once I plugged it in, the phone automatically booted up. Is this normal?
I also tried leaving my charger on & shutting down the phone. It automatically boots up after shutting down. Has anybody experienced this?
01-12-2013, 05:25 PM #8
- 1,456 Posts
AFAIK Android devices are the only smartphones that don't automatically power up when charging. My wife's Android phone doesn't...
I think maybe MS (and apple) went with a software solution to prevent overcharging rather than a hardware one. This would mean the phone would have to be on while charging to make sure you don't cook your battery.
- 01-13-2013, 10:20 PM #13
- 02-15-2013, 09:46 AM #14
Yes, the same thing keeps happening to my Lumia 920 as well.
Frankly, I have to go through shut-down procedure a couple of times before unit shuts down.
When I finally get it to shut down and then plug in charger it boots back up!
If it is plugged into charger unit will not shut down at all, it just reboots itself.
There is also a "hard shutdown" where one can hold the Volume Key and the Power Off key at same time. I have had to use this a couple of times when Lumia 920 simply hung up during a shutdown.
What am I missing.
I am new to threads and have not read the other posts yet so if I am going over old ground, please excuse.
- 02-15-2013, 11:17 AM #16
02-15-2013, 12:26 PM #17
- 762 Posts
With the wireless charging this is the case, but with USB wall adaptors it really isn't. They just provide an efficient 5V of up to 10W and the phone can pull whatever it likes up to this. The data pins on the USB adaptor specify the charger capability. And there are both USB specs on this (BC1.2) as well as about 8 proprietary methods of indicating capability, typically by setting the pins to differing voltages or shorting them. The phone doesn't tell the wall adaptor anything.
Edit: You are right in that chargers are typically smart and do regulate supply to the battery/operating device dependent on it's power requirements. The charger basically balances the output to the charging and device operating demands.
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