Xiaomi Redmi Note 9 is one of the most popular budget smartphones of 2020, but many users still wonder why it does not support wireless charging Qi? On the Internet you can find dozens of “instructions” to activate this feature through hidden settings or firmware, but most of them either do not work or are dangerous to the device.
In this article, we will explore why the Redmi Note 9 (M2003J15SC, M2003J15SS, and others) does not support wireless charging at the hardware level, what alternative solutions exist (including adapters and modifications), and why trying to “enable” it software is a waste of time.
If you are looking for a way to charge your Redmi Note 9 wirelessly, this guide will help you choose the best option without the risk of damaging your smartphone.
Why there is no wireless charging in Redmi Note 9: technical reasons
The main reason for the lack of Qi charging in the Redmi Note 9 lies in the design of the device. Unlike flagship models (for example, Xiaomi Mi 10 or Mi 11), the budget Note series is optimized for cost, and the manufacturer deliberately excluded several features:
- 🔋 No coil of wireless charging — there's no hardware module in the case of the smartphone that takes power from the charger. It's not software, it's a physical limitation.
- 📏 Body thickness – efficient power transfer requires a certain arrangement of components, which complicates the design of budget models.
- 💰 Cost – adding a Qi module would increase the price of the device by 10-15%, which contradicts the concept of the Redmi Note series.
Moreover, even if the coil were present, it would require additional software optimization, and the Redmi Note 9’s MIUI firmware doesn’t have drivers or wireless charging management algorithms—there’s no place to implement them.
⚠️ Note: Instructions are found on the network to activate wireless charging via the engineering menu (#4636###) or edit the build.prop file. These methods are not only useless, but can lead to a loss of warranty or software failure.
Can I add wireless charging to the Redmi Note 9: a review of solutions
While regular wireless charging on the Redmi Note 9 is not possible, there are alternative ways to charge your smartphone wirelessly.
| Method | Principle of work | Pluses | Cons |
|---|---|---|---|
| Adapter with USB-C connector | Connects to the charging port and receives energy from the Qi panel | ✅ No need to take down the phone.✅ Compatible with any Qi-charger | ❌ Occupying the port❌ Slower wired charging |
| Case with wireless charging | Built-in coil in case, connects to USB-C | ✅ Protects the phone.✅ Easy to use. | ❌ It increases the thickness.❌ More expensive than an adapter |
| Modification of the shell | Installation of the coil inside the smartphone (requires analysis) | ✅ Maximum integration | ❌ Risk of damage❌ Loss of guarantee❌ Hard to implement |
The safest and most affordable option is a USB-C adapter, which is a small module that plugs into the charging socket and allows you to use standard Qi panels, such as the Baseus Wireless Charger Receiver or the Nillkin Magic Disk.
Step-by-step: how to use a USB-C adapter for wireless charging
If you have chosen a USB-C connector adapter, follow this instruction to avoid errors:
Make sure the adapter is compatible with Redmi Note 9 (USB-C support)
Use an original or certified Qi charger (power 5-10 W)
Turn off fast charging in settings (Settings → Battery → Fast charging)
Check that there are no mechanical damages to the adapter.-->
- Connect the adapter to the USB-C connector of your smartphone. It should fit tightly, without backlash.
- Place the phone on the charger so that the adapter is in the center of the coil (usually marked with a logo or indicator).
- Wait for the charging icon to appear on the screen. If there is no indication, try to shift the phone by 1-2 mm.
- For stable operation, avoid metal covers – they can block the signal.
Charging speeds through the adapter will be lower than those with a wired connection, usually 5-7 watts (versus 18 watts for the original Redmi Note 9 charger). Also consider that the adapter can heat up - don't leave the phone unattended for long.
⚠️ Some cheap adapters can cause port overheating USB-C Or even damage the power controller.Buy devices with Qi certification and verified reviews.
Common myths about wireless charging Redmi Note 9
There are many misconceptions surrounding the Redmi Note 9 wireless charging topic.
- 🔄 «You can turn on through the engineering menu" - no, there are no corresponding drivers in the firmware, and attempts to edit system files will lead to a failure.
- 📲 «Update MIUI Xiaomi has never released updates that add hardware features. This contradicts the logic of the iron part.
- 🔧 «It is enough to replace the back cover" - even if you install the coil, you will need a modification of the motherboard and firmware, which is not feasible at home.
- ⚡ «Wireless charging faster than wired" - on the contrary, due to energy losses during transmission, the speed is always lower (maximum 7-10 W vs. 18-30 W for wired solutions).
The only way to charge the Redmi Note 9 over the air is to use external adapters or Qi-module cases, all other methods are cheating or risky experiments.
Comparison with other Xiaomi models: who supports Qi charging
If wireless charging is important to you, consider other Xiaomi models that are implemented at the hardware level, and the table below compares it to the brand’s popular devices:
| Model | Support for Qi | Max. power (Watt) | Features |
|---|---|---|---|
| Xiaomi Mi 11 | ✅ Yes. | 50 | Fast wireless charging, reverse charging |
| Xiaomi Mi 10 | ✅ Yes. | 30 | Requires a branded charging station |
| Redmi Note 10 Pro | ❌ No. | — | Similar to Note 9, only adapters |
| POCO F3 | ❌ No. | — | Support only through external modules |
As you can see, even newer models of the Redmi Note series (for example, the Note 10 Pro) did not receive wireless charging, which remains the prerogative of the flagship lines Mi and POCO F (in some versions).
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If you’re planning on buying a new smartphone with wireless charging, look for the Xiaomi 13 or POCO F5 Pro – they support the Qi 1.3 standard with up to 50 watts.
Frequent problems and solutions when using adapters
When using external Qi adapters, users face typical difficulties.
- 🔌 Phone doesn't charge: Check the density of the adapter to the connector. Make sure the charging panel is plugged in. Try another Qi panel (some adapters are not compatible with cheap charging).
- 🔥 Adapter warms up: Remove the case - it can block the heat sink. Don't use a charge higher than 10 watts. Let the adapter "rest" every 30-40 minutes.
- ⚡ Slow charging: This is normal - wireless charging is always slower than wired. Disable background apps to save energy.
If the adapter stops working completely, try cleaning the USB-C connector with compressed air or a soft brush, and sometimes the contacts oxidize, in which case a careful cleaning with alcohol will help.
What if the adapter damaged the USB-C port?
Safety: Modification risks and alternative solutions
Some users are trying to install the coil inside the Redmi Note 9 by disassembling the case, a method that is extremely risky for several reasons:
- 🛠️ Trail damage – when disassembled, it is easy to damage flexible display or battery cables.
- 🔋 Battery overheating – improper coil location can cause local heating, shortening battery life.
- ⚠️ Loss of tightness – after disassembly, the phone loses protection from dust and moisture (even if it was originally used).
If you really need wireless charging, it’s much safer and cheaper to buy an external adapter or a Qi case, for example, Nillkin or Spigen cases cost 1,000-1,500 rubles and do not require any intervention in the design of the phone.
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Any modifications to the Redmi Note 9 case result in a loss of warranty. If the phone is warranty, use only certified accessories.