Can an iPhone Charge Another iPhone? The Power of Reverse Wireless Charging
The short answer is: yes, but with limitations. While iPhones don't have a dedicated "charge another iPhone" feature like some Android devices, they can charge other devices wirelessly using a feature called reverse wireless charging. This means your iPhone can act as a power bank, albeit a less powerful one than dedicated charging solutions.
This capability relies on MagSafe and Qi wireless charging. Let's break down how it works and its limitations.
What iPhones Can Reverse Wirelessly Charge?
Currently, only iPhones that support MagSafe and Qi wireless charging can act as reverse wireless chargers. This feature was introduced with the iPhone 12 and continues to be available on newer models. Older iPhones do not possess this functionality.
How Does Reverse Wireless Charging Work with iPhones?
Reverse wireless charging on iPhones uses the principles of Qi technology. When you place a compatible device (like another iPhone, AirPods, or a Qi-compatible smartwatch) on the back of your iPhone, the energy is transferred wirelessly. However, it's crucial to note that it's significantly more efficient with MagSafe-compatible devices due to the precise magnetic alignment.
What Devices Can My iPhone Charge Wirelessly?
Your iPhone can wirelessly charge other devices that are compatible with Qi wireless charging. This includes:
- Other iPhones (iPhone 12 and later): While they can be charged, the charging speed is slow.
- AirPods (with wireless charging case): This is generally a more efficient use of reverse wireless charging.
- Apple Watch (Series 7 and later): The magnetic alignment with MagSafe makes this a more effective method of charging.
- Other Qi-certified devices: Many other accessories and devices on the market support Qi wireless charging and can be charged by your iPhone, though charging speeds may vary.
How Fast Does Reverse Wireless Charging on iPhones Work?
Reverse wireless charging on iPhones is considerably slower than wired charging. You should not expect fast charging speeds; it's more of a convenient top-up solution rather than a primary charging method. The speed will also depend on the receiving device's capabilities.
Can I Use Reverse Wireless Charging to Fully Charge Another iPhone?
It's unlikely you'll be able to fully charge another iPhone using reverse wireless charging. The charging process is slow, and your iPhone's battery will drain significantly in the process. This method is best suited for topping off a device's battery when you need a small charge boost.
Are There Any Disadvantages to Reverse Wireless Charging?
Yes, there are a few disadvantages:
- Slow charging speeds: As mentioned above, this is the biggest drawback.
- Battery drain on the charging iPhone: Using reverse wireless charging will drain your iPhone's battery faster.
- Heat generation: Both the charging and charged devices might generate some heat during the process.
- Distance limitations: The devices need to be in close proximity for the charging to work effectively.
Is Reverse Wireless Charging Worth It?
The usefulness of reverse wireless charging depends on your individual needs. If you occasionally need a small top-up for your AirPods or Apple Watch and happen to have a compatible iPhone, it can be a convenient feature. However, it's not a replacement for a proper wireless charger or power bank for efficiently charging other devices.
In conclusion, while iPhones can charge other iPhones wirelessly, the process is slow, and its efficacy depends on several factors. It's a convenient feature for minor top-ups, but not a primary charging solution.
