Making calls on phone while charging: implications and consequences

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I have been in a situation concerning phone battery giving me issues like, consistent low battery even after charging a hundred percent. It became a very big problem that I almost smatched the phone out of anger and frustration. At first, I thought the battery was bad, but after replacing the old one, the problem still persisted. Hence,I decided to look for the reason behind the problem and I discovered the following which could also help others out.

The following instructions can help address the issue

"Don't use your phone while it's charging," "don't leave it plugged in overnight" and "always let it die completely" — these are just a few popular myths about smartphone batteries.source

When it comes to battery life, there are many little rules for what you can and can't do with your smartphone. While plenty of real rules exist, there are several rumoured ones you can simply ignore. Phone batteries have evolved so much over the years, becoming smarter and easier to manage. Most lithium-ion batteries, used by major retailers like Samsung and Apple,should last between three and five years, if you take proper care of it.source

Here's the truth behind five major phone charging myths.

Myth 1: Using off-brand chargers destroys batteries.
The truth: Off-brand chargers, while not optimal, are fine. It's knockoffs you should avoid.
Don't go for cheap brand knock off chargers when you can at least purchase inexpensive, off-brand chargers (as long as they're made by legitimate retailers, such as Belkin and KMS). The folks Altogether ran a detailed experiment in which they pitted official chargers against knockoffs and off-brand models.
The results showed that off-brand chargers, though obviously not as good as the official thing, work just fine. Knockoffs barely even get the job done.source

Myth 2: You shouldn't use your phone while it charges.
The truth: Use it all you want, as long as you're not using a sketchy third-party charger.

There are scary reasons behind this myth. People believe that using a phone while charging will make the phone explode, or electrocute the user. That actually happened to a Chinese flight attendant named Ma Ailun in July 2013, when she used her iPhone 4 while it was charging.
However, reports say it's because Ailun was using a third-party charger, not an original Apple charger.
If you're using the manufacturer-approved charger and battery, you should be fine.source

Myth 3: Charging your phone overnight kills the battery.
The truth: Your phone is smarter than you think. Once it's fully juiced up, it knows to stop charging. That means the battery isn't even in use at all.
However, that doesn't mean you should be charging your phone all night, every night. You wouldn't fill a cup with water if it was already full, would you? Your battery life will last longer if you keep your phone charged between 40% and 80%.source

Myth 4: You don't need to turn your phone off — ever.
The truth: Your phone may be a machine, but it still needs to take a few breaks. An Apple Genius said that in order to maximize battery life, you should turn off your phone from time to time, especially when you go to bed at night.source

At the very least, Apple experts recommend turning your phone off once a week in order to preserve battery life.
Turning off your phone is important for Android devices as well. A simple reboot can help restore battery life.

Myth 5: Don't charge your phone until it's completely dead.
The truth: It's better to charge your phone every day than to do a "deep charge" from time to time.
Lithium-ion batteries, like the kind used in Samsung and Apple products fare better when they're charged. If you constantly let them drain to 0%, they become unstable. Your battery has a finite number of charge cycles, and every time it fully dies, that's another cycle out the window.source

BONUS: Fact — heat will ruin a battery.
The truth: This is absolutely true. Heat and tech don't generally go hand-in-hand, and that's no different with phone batteries.
Lithium-ion batteries heat themselves, and get hotter while they're being charged. Cold weather can also have a negative impact on a phone's life, and a cold battery will die faster than usual in low temperatures.

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Your phone will be safe if you keep it within its recommended temperatures; Apple says 32 degrees Fahrenheit is the lowest recommended temperature for an iPhone's environment. Samsung, on the other hand, guarantees its phones can function anywhere between -4 and 122 degrees.source

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