1. Choose a reputable and well-established repair shop
This is one of the foremost factors to consider. If your device is still under warranty, you should bring it to the place of purchase to avail of the warranty. Therefore, when purchasing a laptop, computer, or electronic devices, you need to focus on selecting a reputable establishment with quality assurance and the best warranty policy. In case the warranty has expired, opt for reputable and renowned repair shops. This ensures that any replaced components (if any) are genuine, reasonable repair costs, and most importantly, reduces the risk of data theft.

2. Back up and delete all important data
When repairing a device, it may be necessary to reset the device or upgrade the software... These actions can sometimes result in the loss of all data stored on the hard drive or memory of the device. Backing up data to online storage services is essential. During the repair process, the device may be in a state of total damage or require technicians to reinstall the system, resulting in data loss. Therefore, before taking the device for repair, users need to back up the important data stored on it. You should back up this data to another device or use cloud storage services such as OneDrive, Google Drive... to back up your important data.

3. Take Photos of Device Condition Before Repair
To avoid potential issues during the repair process, it's advisable to take photos of your device's current condition before handing it over to the technician. This includes capturing details like the device edges, screen condition, etc., which are prone to damage or scratches during repairs. Providing detailed information about your device's condition helps technicians understand what interventions are needed. It also ensures you're informed about repair timelines and other relevant details, providing peace of mind.

4. Secure Important and Private Data in a Safe Vault
In addition to backing up important and private data, it's advisable to use encryption software to protect this data, preventing unauthorized access. You can seek assistance from software like Wise Folder Hider. This software allows users to set passwords to protect important data on computers, which is quite common nowadays. After being protected by Wise Folder Hider, the data will 'completely disappear,' leaving no trace on the computer, only you know of its existence. The application is suitable for Windows operating systems.
For Android smartphone users, some manufacturers have integrated functions to encrypt and protect important data stored on the device, such as Samsung smartphones with the 'Secure Folder' feature. After the data is moved to the 'vault,' a new key code is required to view the protected content. You can partially trust the security of your personal data. However, in the event of a system reset on the smartphone, all data on the smartphone will be erased, so you still need to back up data to 'cloud' tools for added peace of mind.

5. Log Out of All Online Accounts, Clear Browsing History If Necessary
An important note is to log out of all online accounts you've signed into on your computer and smartphone, such as iCloud (for iPhone), email, social media, bank accounts, etc. This is the first thing you should do when intending to get your device repaired. Logging out of accounts like Facebook, Telegram, Instagram, Zalo will prevent potential snoopers from accessing them, or attempting to log into your accounts will be very difficult. Additionally, avoid storing passwords of these accounts in computer or phone notes to prevent easy access by others. Moreover, for privacy assurance, consider clearing your browsing history, downloaded files from the Internet, etc.

6. Avoid keeping sensitive images, private data on the hard drive/memory when going for repair
You can store sensitive images, private data in secure storage spaces like iCloud or Google Photos. To access these, repair technicians need a password. Without accidentally revealing the password, viewing such images becomes extremely difficult.

7. Back up and delete all messages on your smartphone
An important detail often overlooked is deleting all messages on your smartphone before getting it repaired, to prevent any leakage of private content. Before deleting messages, users should back up and synchronize this content for recovery after receiving the device back.

8. Request repair technicians to provide personal information
If your computer stores too much data, or if it malfunctions before you can log out of your accounts, you can ask repair technicians to provide their personal information. This is necessary because you know exactly who has your password. This makes the technician hesitant to tamper with your data. You should request the store manager or consultant to commit to this issue to minimize risks.

9. Implement two-factor authentication for all social media accounts like Facebook, Zalo, Instagram…
Most social networks and messaging apps today aim to enhance security for their users. Therefore, this is absolutely necessary for you to do to increase the security of your accounts. Anyone attempting to access your account is notified on your device, or there's a second layer of security that's highly invulnerable.

10. Change your iCloud and Google passwords immediately after repair
Upon receiving your device back, it's advisable to change storage account passwords like iCloud and Google to heighten vigilance in case your passwords have been compromised by phone repair technicians. Changing passwords is essential to prevent information leakage if the perpetrator intends to access your personal information and accounts later on, having acquired the password and understanding certain aspects of these devices and tools.
