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2

That's an option to enable : Settings > General > Usage > Battery Percentage


2

Your battery life is based on cycles, not so much what you use them for. Your battery has no idea if you are streaming music from your favorite service or your are crunching numbers to calculate pi to the nth digit or just surfing Stackexchange. The more draw you put on it, the more it is going to discharge requiring you to plug it back in to recharge it. ...


2

Apple Pay works with NFC "Near Field Communication" band at 13.56 Mhz (but in low energy) means it has to be very close to the source to work). You iPhone gets a interference signal (not intended) from Samsung and it thinks it is near a payment machine and it activates. Since it is a interference, there is no software that can fix that, it is a hardware ...


2

This is the result of excess force squeezing the wrist pad against the internal components. In your other question asking about heat stress is a no go. Aluminum doesn't weaken or deform that way in temperature ranges where plastic won't melt and batteries don't catch fire. The bulge in the other question is really compression bending the case inward and ...


1

Every battery in a MacBook has a battery processor, which, from time to time, should be recalibrated. Like this: 1. Fully charge your Mac 2. Use it until it dies 3. Once dead, wait at least 5 hours, no less, then plug it in and charge it to 100%, without using it. The battery percentage reading on your Mac should now be more accurate. If this doesn't fix ...


1

As a general rule given the low cost of having Apple replace the battery I would normally recommend this, it's then a official product with warranty. However as you've already got the part and opened the phone this is too late.. It looks like the cover you are trying to remove is the one over the battery connector, this is what prevents your battery from ...


1

Not possible, you would have to physically alter the USB cord and remove the pins related to power and leave the data ones intact.


1

That's not possible. Also, modifying a USB cable (as suggested in another answer) is a) probably not a good idea and b) probably won't even work (see this question & answer). Energy-wise, you are most likely better of by just using wifi for tethering.


1

Well, that is the proximity sensor which should detect when you hold the phone to your ear and turn off the touch screen, etc. On my iPhone 5 it is only active when I make a phone call or use a App that uses it (e.g. SmartSleep). It is also visible to the eye when you are in a dark room. These (rather old) articles (1, 2) has more info and states that this ...


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Practically all third party batteries for mac are s**t, go to Apple and buy an apple battery. Expensive but worth the money. I am speaking from a hard way of learning... LS


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Unfortunately you've tried everything... If there is enough power left to boot you could go to the Apple Menu > About this Mac > System Report > Power > AC Charger Information and have a look if it recognises the charger, and check the battery health. If this isn't an option because the battery is flat, or health is good and the charger isn't recognised. ...


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the current os does not seem to show this data or at least not as described above. This is an excellent app which tracks battery health for both the laptop and iPhone. Free - http://www.coconut-flavour.com/coconutbattery/


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If you can't boot to a grey screen after resetting the SMC and then connecting a working charger for 15 minutes, you have a hardware issue. The steps a hardware technician would perform are as follows: Disconnect everything you can from the Mac Try a power on when connected to power. (Observing whether the charge LED goes green or orange is an important ...



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