JamesBrickley

All Lithium ion batteries contain a huge amount of energy. If the battery internals are damaged and allow for an internal short the results are spectacular. You have to be very careful with the charging circuitry as well. 

Cheap 3rd party chargers and cables could be the cause. Also damaging the phone via drop damage that compromises the battery in some way is possible. 

There is a David Pogue Nova episode Season 44 Episode 10 "Search for the Super Battery" that goes into depth on the Lithium Ion batteries. Plus a new design that cannot explode.  

lorin schultz said:

I always shut down my Mac before stuffing it in my bag to change locations. It doesn't seem like a good idea to leave power applied to something that's being hauled around.

But you do not need to.  Unplug power close the lid.  It will go to sleep and it will eventually hibernate.  You can adjust the hibernate with Terminal commands in the firmware if you wish but its recommended not to play with those settings as it can impact the wake and update features of Auto Nap.  It takes longer to boot than it does to wake from hibernate or sleep.  In sleep mode the power is extremely low and in a few hours it will hibernate turning off completely.  Hibernate means it writes what is in RAM to a file saving it to the SSD.  Waking from hibernate means it takes longer to load that file back into RAM to restore where you left off.  Sleep means it supplies power efficiently to RAM to maintain it but doesn't spin up the CPU, disk nor fans.  The power usage on sleep mode is very very small.  In and out of bag, on a bike, in car, on train, on plane, it matters not providing you have a good bag. The only time I might shut it off is if the battery is almost dead.  Plugging it in when off powers it on at least for my ultraportable MacBook 12".  

I've gone months without rebooting.  Pull it out of bag, flip the lid, login, work, close lid put it in bag, rinse repeat many many times without issue.  I typically only reboot when an update requires it or if something gets squirrelly (ala an App with a memory leak - bug).  I sleep my desktops with an CMD+Option+ Eject button press as well.  

You have to understand the sheer quantity of iPhones shipping from China. Last couple years it was about 74 million iPhones! (not that many on pre-order and launch day the number is for the entire financial 1st quarter) There are Boeing 747 / 777 and Airbus 380 cargo planes completely full of nothing but tightly packed iPhones leaving China several times a day every day for weeks whenever there is a new iPhone shipping.  The 777 can hold 450,000 iPhones per flight. The logistics are absolutely mind blowing. They can adjust the logistics on the fly because they know precisely where every single device is at all times.  It was Tim Cooks job to create this system originally and he was very good at it.  I believe they have a former Amazon exec running it now. The iPhones literally all arrive at the same time around the globe. It's an automated on demand just in time process. They cannot possibly take the financial risk of mis-judging the demand by producing too many as Microsoft learned the hard way when they had to write down a $900 million dollar loss when their Surface tablets were not selling and collecting dust on warehouse shelves.  

So if you were unfortunate enough to not be ready to place an order at 12am PDT when pre-orders started you are likely going to have to wait. This year they apparently dipped into the store inventory to full fill pre-orders so the stores are light on inventory with some finishes and models such as the Plus line completely sold out.  

3rd Party wallets do not have the same security as Apple Pay which is rock solid.  The only breaches that have occurred have been the result of a bank not properly vetting a customer's credit/debit card when added to Apple Pay.  However, Samsung Wallet has a vulnerability just discovered and will be revealed at an upcoming Black Hat security conference.  The banks do not want to integrated with Apple Pay by simply joining in and allowing their customers to register debit/credit cards with their iPhone wallet.  They want to use alternative wallet providers which have not been proven and are not safe and who apparently offer greater financial incentives for the bank at the expense of the consumer.  

Even if they did manage to have their own app integrated with a 3rd party wallet it won't be that good of an experience.  The iPhone/Watch Apple Pay is crazy easy to use.  The Android solutions are not even close and again they are vulnerable.  You can already use an NFC reader and scan credit cards inside someones wallet or purse walking down the street.  Wireless is inherently dangerous.  Cars with keyless entry fobs have been hacked by simply boosting the radio from the car to the fob to extend the range using a portable repeater/amplifier and click/click the doors are unlocked and in many cases you can drive away while the key fob is hanging on a hook inside the house or in the owners pocket while they are in a store or restaurant.  I do not trust 3rd party's with the technology, Apple's integration of hardware, software, and cloud infrastructure with a strong focus on security and key escrow on secure chips have not been replicated by anyone else.  There are flaws in the 3rd party designs that cannot be fixed. There cannot be a 3rd party solution on an iPhone that integrates with TouchID and the NFC chip.  You would have to unlock your phone, switch to the banks app authenticate to the app start a wallet transaction, etc.  It would be tedious where with Apple Pay you just double-click the home button while locked select the card and finger print scan while waving near the reader and DING transaction processed.  Or you double-click the Watch button and select the card and wave the watch, DING transition processed.  If I have to jump through more steps I might as well take out my credit card and go the old fashioned route.

It's just plain sad that these media companies do not get it.  The pirate methods far exceed what they offer and it's getting easier and easier to setup these systems.  You effectively can use the Internet as your DVR.  You aren't recording at all you are just telling automated systems what you want and then it magically appears within about an hour of airing and you can typically get the back catalog of episodes most of the time.  Storage is getting cheaper and cheaper and it's easy to either buy a home NAS or build one.  They are soon to be in big trouble in the next few years.  Perhaps Apple will have to wait till they are desperate like the music industry.  

If you don't adapt to the new digital world then pirates will fill the void, the more you fight it and make life difficult for the consumer the more the pirates will fight back.  The only way to win against the pirates is to make it super easy to use and inexpensive.  Tear down the walls and go global, you will gain a huge untapped market.  Game Of Thrones in the most pirated show in history.  HBO Now is starting to turn tremendous profits they would have otherwise never tapped.