Is there a specific way to connect USB-C cable to iPhone ?

[_dragan]

So I asked the same question on other forum...just want second opinion

So my external PC hard-drive manual says that I first connect cabel to hard-drive and than to PC...so does iPhone 16 has a rule which part of USB-C cable goes first; should I first connect cabel to phone and than to AC power or vice versa?

 

[MarkC426]

I have always plugged cable into power or mac, then connect to phone.

 

[FreakinEurekan]

It doesn't matter.

 

[curnalpanic]

I always connect computer/charger end first, then phone.

Can't image doing it the opposite way.

 

[MacCheetah3]

The iPhone User Guide doesn’t provide an explicit order.

To charge iPhone, do any of the following:

• Connect iPhone to a power outlet using the charging cable (included) and an Apple USB power adapter or other compatible power adapter (sold separately). See Power adapters.
  
  
• Place iPhone face up on MagSafe Charger or MagSafe Duo Charger (connected to Apple 20W USB-C power adapter or other compatible power adapter) or on a Qi-certified charger. (MagSafe Charger, MagSafe Duo Charger, power adapters, and Qi-certified chargers are sold separately.) See MagSafe chargers and battery packs and Qi-certified wireless chargers.
  Note: You can also use third-party power adapters and Qi-certified chargers that are compliant with applicable country regulations and international and regional safety standards. See “Charging” in Important safety information for iPhone.
• Connect iPhone and your computer with a cable.
  Make sure your computer is turned on—if iPhone is connected to a computer that’s turned off, the battery may drain instead of charge. Look for
  
  on the battery icon to make sure your iPhone is charging.
  Note: Don’t try to charge your iPhone by connecting it to your keyboard, unless your keyboard has a high-power USB port.

Connecting iPhone to a power outlet or placing it on a wireless charger can start an iCloud backup or wireless computer syncing. See Back up iPhone and Sync supported content.

WARNING: If you suspect there may be liquid in the charging port of iPhone, don’t plug the charging cable into it. For information about exposure to liquid, and other important safety information about the battery and charging iPhone, see Important safety information for iPhone.

However, Apple does instruct power source first then device for charging MacBooks:

Charge with MagSafe 3​

1. Plug the USB-C power adapter into a power outlet.
2. Plug the USB-C end of the MagSafe 3 cable into the power adapter.
3. Connect the other end of the cable to the MagSafe 3 port on your Mac.

Charge with USB-C​

1. Plug the power adapter into a power outlet.
2. Plug one end of the USB-C cable into the power adapter.
3. Plug the other end of the cable into any USB-C port on your Mac.

A summarized Web search:

Charge Battery First or Outlet​

When charging a battery, the order in which you connect the charger to the battery and the outlet can vary depending on the type of battery and charger you are using. Here are some guidelines:

• For car batteries, it is generally recommended to connect the charger to the battery before plugging it into the outlet. This ensures that the charger is not exposed to a potential spark when the connection is made. First, connect the positive (red) cable to the positive terminal of the battery, then connect the negative (black) cable to the negative terminal. Finally, plug the charger into a properly grounded outlet.
• For e-bike batteries, there is some debate. Some manufacturers recommend plugging the charger into the battery first, while others suggest connecting it to the wall socket first. For maximum safety, it is advisable to follow the instructions provided by the manufacturer of your specific battery and charger. If no specific instructions are available, it is generally safer to plug the charger into the wall socket first, then connect it to the battery.
• For USB chargers, it is often recommended to connect the USB end to the device first, then plug the charger into the wall outlet. This helps reduce the surge that can occur when connecting to the outlet.

Always ensure you follow the manufacturer’s instructions for your specific battery and charger to ensure safety and optimal charging.

In fact, my e-bike manual instructs to connect the charger to the battery or bike first then to a power outlet.

Ultimately, any trustworthy battery charger is going to be able to accommodate any order of connection — at least in my experience.

 

[_dragan]

Didn get the last post So first we must connect the phone cable to power outlet and then to the phone

 

[MarkC426]

I really don’t think it matters.
My devices are charged from cables connected to my UPS (uninterruptible power supply), so they are already plugged in…..I just connect end to phone/ipad.

 

[d_r_a_k_s_a]

So manuals mentiones that for some theoretical purposes

 

[MacCheetah3]

Didn get the last post So first we must connect the phone cable to power outlet and then to the phone

Not “must” though maybe should… B-U-T...

I really don’t think it matters.