P=IR^2 i.e Power=Current(I)*Resistance *Resistance(R^2) you're battery has internal resistance that's a constant. Why her phone gets hot when charging(both during fast charging and If you get low rated car charger + bad cable = no charging at all.Couple that with heavy power usage and you're basically doing more damage to your battery than helping it.
#Galaxy s7 change default email app to gmail professional
Now if she happened to have been using a properly rated car charger, the cable she was using would most likely be the problem.Reference here.I don't want to go into that deeply open the link for more in-depth info but basically some knock-off cables don't take professional physics into plan and hence you get some 'wires' that were intended to charge cheaper phones not your Gs7 premium flagship phone. Note: Using a lower rated wouldn't explicitly mean your phone wouldn't charge it might charge extremely slowly or it might not charge at all or it might even discharge (this is when power output is less than 500ma) Her car charger adapter most likely was rated lower meaning it wasn't producing enough power to sustain the power being utilized by the phone when functioning with GPS. GS7 chargers are rated at 1.67A and 2.0A. Let's start from the car adapter she was using. What cable was hooked to her phone from the car charger. What other apps were running, what charger adapter she was using and You wanna know why the battery drains when using GPS despite havingīasically GPS is heavy on battery, explained here.Using GPS,as has been stated in the article, involves connecting to around 3 or so satellites at a very slow pace(50 bits per second) which means her phone at the time was using a lot of power.Depending on other factors in play namely When done, don't forget to remount /system read/write again – either by a reboot, or with mount -o remount,ro /system. If not, you can always restore your original hosts file (note we copied it to hosts.bak). $ cat /system/etc/hosts # first check if the work below needs to be done. This can be done either via adb shell from your computer, or with a terminal app directly on the device: You'll need to remount the system partition read/write to modify this file-, which requires root access. So in that file, there might be multiple entries you need to comment out or remove (check first if that's the case – if not, you can save yourself the trouble). Some "ROM cooks" add the IP for Google's servers here "to speed things up" (avoiding "lookup overhead") – with the side effect being things break when those servers are "relocated". Most Google components such as Playstore, Gmail, Sync, use secure communications, and thus rely on certificates.Įspecially with Custom ROMs or on rooted devices in general, the file might have been altered.
If they are "too far off", it might cause problems with certificates – which then either appear "not yet valid" (with your date too far in the past), or "no longer valid" (with your date too far in the future).
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