Preparation of Xiaomi smartphone for sale: a full checklist for 2026

Selling a used smartphone is not just a matter of price, it is also a matter of reputation. Xiaomi buyers are more careful: they check the device for tied accounts, hidden defects and even traces of the previous owner in the system. A mistake in preparation can lead to locking the phone through Mi Account (even after selling!) or leaking personal data. This instruction will help avoid typical pitfalls and prepare the device so that the transaction goes smoothly - and you are left with a clear conscience and positive feedback.

It’s not enough to just erase photos and take them out. SIM-Modern Xiaomi on the map. MIUI 14/15 They store data in dozens of places, from app cache to system logs. For example, many people forget that Settings are a very important part of the system. → Google → Backups can automatically restore your contacts to a new customer’s device, and Mi Accounts, if untied correctly, can lock your phone a week after the sale, and you’re at fault. Next, we will analyze the process Step-by-step, taking into account the nuances for the Redmi Note models. 12, POCO X5 and flagships Xiaomi 13/14.

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1. Backup: What to Save Before Resetting

The first step is to save important data. Even if you plan to leave your phone "like new," without a backup, you risk losing photos, correspondence or passwords from apps. Xiaomi has two official backup methods, but both have pitfalls.

Method 1: Local backup via Settings → The phone. → Backup and reset → Local backup. This method saves:

• 📱 Contacts, SMS call-book
• 📷 Photos and videos (only if you have selected the appropriate item)
• ⚙️ System settings (Wi-Fi, wallpaper, sound profiles)
• 🔑 Passwords from some applications (but not from bank accounts!)

The downside is that the backup file weighs up to 10 to 15 GB and is stored in internal memory, and if there is not enough space, the system can interrupt the process. MIUI It does not copy data from some Chinese applications (e.g. Mi Fit or Mi Home) and will have to be exported separately.

Method 2: Cloud backup via Mi Cloud, and here's a critical caveat: If you haven't logged in in a while, Xiaomi may have blocked it for "suspicious activity."

• 🔒 Account availability at account.xiaomi.com
• ☁️ Free space in the cloud (free only 5 GB)
• 📡 Stable Wi-Fi connection (backup on mobile network is prohibited)

⚠️ Note: If you used Google Photos to automatically upload media files, check the Archive folder – sometimes screenshots with personal data (card numbers, passwords) get there.

2 Account Deletion: Why Easy Exit Is Not Enough

The most common mistake sellers make is to simply log out of your account in your settings, and it doesn't remove your device's attachment to your Mi Account, it only hides your data temporarily.

• 🔐 Locking your phone after reset (requires you to enter your login / password)
• 📱 Restriction of functions (for example, inability to log in to your account)
• 🚨 Activation of theft protection (if the phone has been stolen before)

To untie the device correctly, do:

1. Go to Settings → Accounts and Sync → Mi Account.
2. Click on your profile → Account management → Security.
3. Select Delete Account (Password will be required).
4. Confirm the deletion via SMS or email.

⚠️ Note: Some models (e.g. Redmi Note 11 Pro)+) And when you delete your account, the system asks you to wait 72 hours before you reset, and that's an anti-theft measure, and if you reset it earlier, it can lock the phone:

• 🕒 Wait 3 days (timer is displayed in settings).
• 📱 Or use fastboot for forced reset (instruction below).

3.Reset to factory settings: hidden nuances

Even after deleting your account, you can reset through the menu (Settings) → The phone. → Resetting doesn't always clean the phone completely:

For complete cleaning, we recommend using one of the methods:

Method 1: Fastboot Reset (for advanced users)

It is suitable for all Xiaomi models, including POCO And Black Shark, you'll need a computer with drivers installed. ADB/Fastboot.

fastboot oem clean_all


fastboot flash all [name firmware].zip




fastboot reboot

⚠️ Note: On some devices (e.g. Xiaomi) 12T) team clean_all may result in loss IMEI. Before using, check the compatibility of the model in the forum. 4PDA.

Method 2: Use of the TWRP

Castomic recovery allows you to erase data, cache and dalvik sections separately.

1. Install TWRP for your model (you can download it on twrp.me).
2. Boot in recovery: Turn off the phone, then press Volume up + Nutrition.
3. Choose Wipe. → Advanced Wipe and tick all sections except system.
4. Swipe for confirmation.

Download the correct version of TWRP for your model

Backup important data

Charge your phone at least 50%

Disable password protection in settings

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4. Checking the "iron": what to test

Xiaomi customers often check the phone for hidden defects with diagnostic codes or apps.To avoid claims after the sale, test:

1. Battery.

• 🔋 Enter the dialer ##4636## → Battery health level should be at least 80%.
• 📊 Use the AccuBattery app to check the actual capacity, and if it's less than 70% of the declared capacity, the battery needs to be replaced.

2. Screen and touchscreen

• 🎨 Check for broken pixels: run the test on a monotonous background (for example, through Screen Test in Google Play).
• ☝️ Test multi-touch: Open this site in your browser and check your reaction to 5+ touch.

Camera and speakers

• 📸 Shoot the video with the stabilization enabled - if the image "floats", the problem is in the gyroscope.
• 🔊 Check the speakers at different frequencies through Speaker Test (available on Google Play). Redmi Note 10 Pro models are especially vulnerable, because they often have a tail of the lower speaker.

⚠️ Note: If you sell Xiaomi with an infrared port (such as the Mi 11 Lite), check its health through the Mi Remote app.

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Before selling, remove the protective film (if it is torn) and clean the Type-C connector of dust. Buyers often undercut the price due to small things that are easy to eliminate in 5 minutes.

5. Decoupling the device from the services of Google and Xiaomi

Even after a reset, your phone can remain linked to your accounts through:

• 🔗 Google Find My Device (locks your phone after a reset if you don’t turn it off)
• 🔗 Mi Cloud Find Device (similar to Xiaomi, works even without it) SIM-map)
• 🔗 Operator services (for example, "My Tele2" or "MTS Connect")

To untie the whole thing:

1. Google: Go to the Google Device page. Find your Xiaomi in the list and click Delete. Turn off Find My Device in your phone settings.

Xiaomi:

• Enter Mi Cloud → Find Device.
• Remove the phone from the list of devices.
• In the phone settings, turn off Settings. → Additionally. → Special facilities → Find Device.

⚠️ Note: If you have used Mi Pay or Google Pay, remove all bank cards from the apps before resetting. In some cases, card data may remain in secure storage even after a factory reset.

6. Registration of the phone for sale: photo, description, packaging

Good photos increase the chances of a quick sale by 40-60%.

• 📸 Front and back sides on a neutral background (without glare!).
• 🔍 Screen corners - scratches are most often visible there.
• 🔋 Battery status (screenshot from AccuBattery or ##4636##).
• 📦 Package: box, cable, adapter (if any).

In the description, specify:

• 📅 Purchase date and warranty period (if left).
• 🛠️ Repair information (e.g., "replaced battery in January 2026").
• 🔄 Reason for sale (model update, switch to another brand, etc.).

⚠️ Note: If you sell through Avito or Yula, do not include phrases like "phone as new" or "no scratches" in the description. This can be regarded as a fraud if the buyer finds defects)".

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Honest description with real photos reduces rejections and returns. Consumers value transparency more than tempting but false promises.

7. Transfer of the phone to the buyer: checklist

On the day of the meeting, follow these steps with the buyer:

Turn on the phone and show it is loading.

Check the performance of cameras, speakers, sensors

Make sure there are no linked accounts (ask the buyer to log in to Mi Account)

Transfer the box and documents (if any)

Receive payment and sign the contract of sale (at the amount of 15,000) ₽)

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If you sell through a bulletin board, use secure payment methods:

• 💳 Bank card with payment verification (ask the buyer to show) SMS write-off).
• 🏦 Transfer via SberBank Online with the comment "Payment for Xiaomi [model]".
• 🚫 Do not accept: WebMoney, Qiwi, transfers to someone else's account.

⚠️ Warning: If a customer asks to send a phone by mail before payment (even with a "guarantee" through Avito Protection), it's 99% fraud. Xiaomi is a popular target for "box swapping" or "non-receipt package" schemes".

FAQ: Frequent Questions When Selling Xiaomi