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The retirement of a mobile phone number can cause hundreds of gigabytes of data on cloud storage to "disappear" – this is not an exaggeration, but a real scenario that plays out every year.
A friend of mine changed his phone number last year. Three months later, he wanted to log in to Quark Drive to retrieve his child's study materials, but the verification code was sent to his old number. At that moment, he stood in front of the login page, feeling like he was standing outside a locked door.
His experience reminds us that the contents of a Quark account are far more valuable than we imagine.
Quark SVIP membership, expanded cloud storage space, cloud documents, cloud collections, and AI function quotas—all these benefits are linked to that inconspicuous phone number.
According to Quark's official help center, after changing the linked mobile phone number, all data and membership benefits in the account will be fully retained; only the number for receiving verification codes will change.
In other words, the essence of changing the locks is "changing the locks but not the house"—the house is still the same house, and all the belongings are intact.
Before changing the bindings, make sure to do three things thoroughly.
The first step is to confirm that the old phone number can still receive text messages normally; this is the prerequisite for a smooth re-binding process.
If the old account has been deactivated, check if the account was ever linked to an email address. Email verification is the second lifeline provided by the official platform.
The second step is to confirm that the new number is not already in use by another Quark account. One mobile number can only be bound to one Quark account; this is a strict rule.
The third step is to write down in advance the account's member order information, frequently used login devices, registration time, and other supporting information.
This information may seem useless under normal circumstances, but it becomes crucial evidence to prove "I am who I am" when you need to file a manual appeal.
Step-by-step binding change: Four steps to complete a seamless migration
Open the Quark App, click the three horizontal lines menu in the bottom right corner, and enter your personal homepage.
Find [Settings], select [Account and Security], and then click [ Phone Number ].
Enter the 6-digit SMS verification code received on your currently linked mobile phone number to complete identity verification.
Then enter your new mobile number, click "Get Verification Code", fill in the verification code received on your new number, and confirm. The change will take effect immediately.
The whole process takes about two minutes. The old account is automatically unbound, and the new account is seamlessly taken over. No data in the cloud drive, membership benefits, or cloud documents will be lost.
Please note one detail: the process of changing the binding is irreversible. Once the old number is unbound, it cannot be automatically restored. Before proceeding, please confirm that the new number is one that you will be using long-term.
Is your old number deactivated? Learn about the account recovery process.
If your old account has already been cancelled and you can no longer receive verification codes, there is still an official appeal channel you can use.
The path is: Settings → Account and Security → Recover or Appeal Account → Account Recovery → Recover via Mobile Number.
Enter your old phone number, select "No Longer Use" and submit. The system will then display your account's avatar and name for confirmation.
Next, enter a mobile phone number you are using to receive a verification code, and then proceed with third-party account verification, member order verification, and auxiliary information verification in sequence.
One netizen tested this method: After Quark upgraded in July 2026, it required him to log in again. His linked number had already been deactivated. By going through the appeal channel step by step, he finally successfully changed the linked number and saved all the valuable data in his cloud drive.
His exact words were "I never imagined it would be so easy," which shows that the door that the authorities left for the true master has always been there.
Three hidden pitfalls most likely to be encountered when changing bandages
The first pitfall is the SMS verification platform.
When registering mobile apps, computer software , or website accounts using your mobile phone number , never use publicly shared online SMS verification code receiving platforms to avoid having your account stolen.
The numbers on SMS verification platforms are shared by countless people. The verification codes you receive can be seen by others, leaving your account essentially exposed.
It is best to use a private virtual phone number , which can effectively protect your privacy and avoid harassment.
Imagine your Quark account as a precious treasure chest, filled with your life's moments and cherished memories. 📸🎁
And a virtual mobile phone number is like a key. Only you know its secret. Does anyone else want to open it? There are no doors! 🔑🚪
Furthermore, using a private, virtual Chinese mobile phone number to receive Quark SMS verification codes is like putting an invisible cloak on your account, protecting your privacy, enhancing the security of your Quark account, and effectively controlling spam interference, allowing you to roam freely and unrestrained in the world of Quark. 🧙️✈
Click the link below now to get your private Chinese virtual mobile phone number through a trusted channel▼
The second pitfall is the expiration of virtual phone numbers.
Additional Quark account protection recommendations: Because once a Quark account is linked to a Chinese virtual mobile number, you must use that linked Chinese virtual mobile number to log in to your Quark account when you change to a new mobile phone; otherwise, you will not be able to retrieve or log in to your Quark account. Therefore, we recommend regularly renewing your personal Chinese virtual mobile number to improve the security of your Quark account.
If your phone number isn't renewed, it will be cancelled. You can only blame yourself for not renewing it on time.
You can use calendar software to set up automatic recurring reminders 3 days before the expiration date to prevent your number from being cancelled; it's very effective.
Once a phone number is cancelled, you can only register a new account; there's no way to recover it.
Instead of fantasizing about a reversal, it's better to accept reality and move forward.
The third problem is that the new account is already in use.
If the system prompts "This phone number is already in use", it means that the new number has been linked to another Quark account. Just try a different number.
Write at the end
In my opinion, changing the linked phone number is not a test of technical skills, but rather a test of asset management awareness.
In the digital age, account rights are like bank deposits; the linked mobile phone number is the key. If you lose the key, even a full safe won't benefit you.
Regularly checking binding relationships, proactively migrating numbers before they expire, and replacing unverified SMS verification services with private virtual numbers—these three things cost almost nothing, but the benefit is the security of the entire digital asset repository.
The so-called "seamless migration" is never a matter of luck, but the result of advance planning.
Instead of regretting it after data loss, take two minutes now to check if your Quark account is still linked to the same number that can receive SMS messages.
Remember this: True security lies not in how many digital assets you own, but in whether you firmly hold every key to unlock them.
Click the link below now to get your private Chinese virtual mobile phone number through a trusted channel▼
Hopefully, the article "Tutorial on Changing Your Chinese Mobile Number After Quark Activation: A Seamless Migration Method Without Losing Rights" shared on Chen Weiliang's blog ( https://www.chenweiliang.com/ ) will be helpful to you.
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