How to completely clean Xiaomi Redmi 4 before sale: step-by-step instructions with verification

Selling the Xiaomi Redmi 4 smartphone requires not only external preparation of the device, but also a thorough cleaning of internal memory from personal data. Even after a standard reset to factory settings, the device can remain fragments of photos, messages and passwords that are easy to recover with specialized software.

Model Redmi 4 (codename prada) released in 2016 It's still in demand in the secondary market because of its reliability and low price. MIUI (most often MIUI 8-10 Android-based 6-7) It has some reset features that are important to consider, like some firmware that has a binding to a Xiaomi account, which can lock the phone to a new user, and we'll go through all the nuances, from backup to digital footprint checks".

1.Preparation for Cleanup: Backup and Account Verification

Before proceeding with the reset, make sure all important data is saved. 4 memory-size 16/32 GB is especially critical – many users only store photos and contacts on their phone, not syncing them with the clouds.

A list of what needs to be kept:

• 📸 Photos and Videos: Use the Gallery → Highlight everything → Export or connect your phone to your PC via USB file transfer (MTP).
• 📇 Contacts: Export to the file VCF via Contact → Settings → Import/Export or sync with your Google account.
• 💬 Messages: applications like SMS Backup & Restore will keep the story alive. XML-file.
• 🎮 Save Games: If the game supports the cloud (e.g., through Google Play Games), log in and save progress.

Pay special attention to the associated accounts. Redmi 4 can be active:

• 🔑 Xiaomi account (Mi Account) – it must be untie, otherwise the new owner will not be able to use the phone.
• 📧 Google account – after reset, you will need to enter the login / password of the previous owner (protection) FRP).
• 💳 Banking applications (Sberbank, Tinkoff, etc.) – manually remove them before resetting.

⚠️ Note: If you forget your Mi Account password, restore it in advance on account.xiaomi.com. After resetting your account without detachment, your phone will require authorization, making it unusable for sale.

2. Deletion of accounts and detachment of the device from services

On Redmi 4s. MIUI Before version 12, the process of deleting accounts has its nuances, for example, simply deleting a Google account through settings does not always work due to Factory Reset Protection protection (FRP). Let's look at a reliable way:

Step 1 Delete your Xiaomi account

1. Open the Settings. → Accounts. → Mi Account.
2. Click on your profile and select Exit (not “Delete Account”!).
3. Confirm exit by entering the password.
4. Back to Settings → Additionally. → Resetting settings → Delete your Mi Account (this item will only appear after you exit).

Step 2: Delete your Google account

• Go to Settings → Accounts → Google.
• Select your account and click Delete account (not “Exit”!).
• Confirm deletion. If the button is inactive, first disable Device Administrators in Settings → Security.

Step 3. Disconnect the protection FRP

To allow the new owner to freely configure the phone after resetting:

1. Delete all Google accounts (as described above).
2. Turn off Find your device in Google settings (Settings → Google → Security → Find your device).
3. Make sure that in the settings → Security → Device administrators do not have active applications (e.g. Anti-Theft from Xiaomi).

3. Complete resetting: the correct algorithm

The Xiaomi Redmi 4 has two ways to reset: through the settings menu and through Recovery mode. The first method is easier, but the second is more reliable - it is guaranteed to delete all data, including system caches.

Method 1. Reset via settings (recommended for most users)

1. Open Settings → Additional → Resetting settings.
2. Select Delete all data (reset to factory settings).
3. Enter. PIN-code or pattern lock if requested.
4. Confirm the reset by clicking Reset Settings.
5. Wait until the phone is finished (the phone will restart). 1-2 once).

Method 2: Recovery Reset (for power users)

This method is useful if the phone freezes or does not respond to the sensor:

1. Turn off Redmi 4.
2. Press the Volume Up + Power buttons at the same time and hold for 10-15 seconds until the Mi logo appears.
3. In the Recovery menu, select Wipe Data (moving through the menu with volume buttons, choosing with the power button).
4. Confirm the action by selecting Yes.
5. After cleaning, select Reboot System.

⚠️ Note: If after resetting via Recovery, the phone requires you to enter a password from Mi Account, then the account was not untied in advance. In this case, restore access to the account on the Xiaomi website and repeat the deletion procedure.

💡

If the phone takes longer to load after reset (more than 10 minutes), don't panic - this is normal for a Redmi 4 with low memory.

4.Residual data check: how to make sure your phone is clean

Even after reset, the device may still have digital traces, fragments of files that have not been overwritten, mainly for photos and documents.

Step 1. Checking the internal memory

• Connect your phone to your PC via USB in File Transfer mode.
• Open internal memory – it should be almost empty (except for Android system folders, MIUI etc.).
• Check the folders. DCIM (Photos, Downloads, WhatsApp (if installed).

Step 2: Verification through the file manager

Install any application on your phone to work with files (for example, FX File Explorer or Solid Explorer:

1. Enable the display of hidden files in the manager settings.
2. Check the root folders for files with.db (database),.nomedia,.thumb (miniatures).
3. Delete the files you found manually.

Step 3: Use of specialized utilities (for paranoids)

If you sell a phone with sensitive information (such as a work phone), use your PC and DiskDigger or Recuva to scan Redmi 4 memory for residual data, which utilities will show you which files can be recovered after a reset.

5 Additional security measures: encryption and formatting

For maximum data protection, Redmi 4 can use memory encryption before reset, making file recovery almost impossible:

How to turn on encryption:

1. Go to Settings. → Additionally. → Protection and confidentiality → Encryption of the telephone.
2. Install. PIN-Code or password (remember it!).
3. Start the encryption process. It'll take over. 30-60 The phone should be charged for a minute. 80%+.
4. Once completed, reset via Recovery (as described in Section 3).

The encryption on Redmi 4 has features:

• ⚡ After encryption, the phone can run slower (especially noticeable on models with 16 GB of memory).
• 🔒 If you forget the password, it will be impossible to restore the data – you will have to reset via Fastboot.
• 📉 Encryption takes up a lot of space (up to) 1-2 GB for system needs).

An alternative method is formatting via Fastboot (power users only), which completely erases the userdata partition, but requires a PC and drivers installed. ADB/Fastboot:

fastboot erase userdata


fastboot erase cache




fastboot reboot

⚠️ Attention: Fastboot commands will delete all data without recovery. Don't use it unless you're sure you're doing it. For Redmi 4 with unlocked bootloader, this is the most effective method.

💡

Encryption + Recovery reset is the most reliable way to clean Redmi 4 before selling, but it takes time and battery life.

6. Physical preparation of the phone for sale

In addition to software cleaning, pay attention to the appearance of the device, which will increase the cost and build trust with the buyer:

Checklist for body care:

• 🧼 Wipe the screen and body with a microfiber cloth (do not use alcohol or abrasives!).
• 🔋 Clean the charging connector and speakers from dust using a toothpick or compressed air.
• 📦 Pack your phone in the original box (if it is preserved) or in a bubble film.
• 📄 Prepare a check or a warranty card (if any) - this will increase the cost of the 10-15%.

What to check before transferring to the buyer:

• 🔋 Battery: Charge your phone to 100% Show the actual time of work (on Redmi) 4 after 3-4 In the years of operation, the capacity falls to 60-70%).
• 📶 Network: Check the work of both SIM-maps and Wi-Fi module.
• 🔊 Speakers and microphone: record a voice message and play it back.
• 📷 Camera: Take test photos on the main and front cameras.

If the screen has scratches, honestly state this in the ad. Redmi 4 glass replacement costs 1,500-2,500 rubles, which can be bargained. Buyers appreciate transparency!

7.Typical cleaning errors and how to avoid them

Even experienced users sometimes miss important details, and here are some of the most common mistakes in preparing the Xiaomi Redmi 4 for sale:

Another common problem is the forgotten password from Mi Account, and if you don't remember the login details,

1. Try to restore your password via email or phone on the Xiaomi website.
2. If you have a phone number attached, ask for it. SMS coded.
3. In extreme cases, contact Xiaomi with a confirmation of purchase (check, box).

If nothing helps, you’ll have to unlock the bootloader and flash the phone through Fastboot, but this will void the warranty (if it’s still valid) and require technical skills.

8 How to increase the cost of the phone when selling

Prepared by Xiaomi Redmi 4 sell 20-30% It's more expensive if you're able to present its benefits:

Arguments for the buyer:

• 🔋 Battery: Specify the actual capacity (use AccuBattery to check). Example: "The battery capacity is 85% of the factory (2800 mAh of 3100 mAh)".
• 🛡️ Cleanliness: Write that the phone is completely reset, without linking to accounts.
• 📦 Set: original box, cable and charging increase the cost by 500-1000 rubles.
• 🔄 Updates: If the firmware is updated to the latest version MIUI For this model, state this.

Where is it better to sell:

• 🌍 Avito/Yula: fast, but lots of scams. Use a secure deal.
• 💬 Telegram chats: groups like "Buy/Sell Xiaomi [your city]".
• 🛒 Salons: buy cheaper, but without risks (about) 60-70% market-price).

The average price for Xiaomi Redmi 4 in 2026:

• 📱 16GB + 2 GB of RAM: 2,500–3,500 rubles.
• 📱 32GB + 3 GB of RAM: 3,500-4,500 rubles.
• 📱 64GB + 4 GB of RAM (rare modification): 4 500-5 500 rubles.

Prices depend on the state, configuration and region, and in Moscow and St. Petersburg, the phone will be sold more expensive than in small cities.

💡

An honest description of the shortcomings (scratches, battery wear) increases the buyer’s confidence and reduces the time of sale.

FAQ: Frequent questions about cleaning up Xiaomi Redmi 4