1. First find the settings on our mobile desktop and click on it.

2. Then click General.

3. Then click Profile and Device Management.

4. Then click on the software you want to trust.

5. Then click to trust “xxx”.

Extended information:

As we all know, iPhone is famous for its security. It is precisely because it is so safe that the FBI has always paid special attention to Apple. However, no matter what, the iPhone is not invulnerable. There is no absolutely safe mobile phone in the world.

Although Apple's hardware is becoming more and more secure, if you have some bad network security habits, your iPhone can also be attacked. This article will provide you with the following seven security tips to help you keep your iPhone safe.

1. Use long passwords

Many people set a four-digit password or a more secure six-digit password to protect their mobile phones. This method is not impossible, but if the thief unlocks it too many times with the wrong password, the phone will automatically lock and increase the lock time. Depending on your settings, it may clear all data on its own after 10 errors.

However, out of 10,000 possible combinations, the attacker must guess the password correctly in the first 10 times. So generally speaking, this success rate is very low, only one in a thousand. So using six digits can further enhance security.

However, not all attackers will foolishly punch numbers at the screen. In recent years, there have been a number of tools capable of endlessly retrying passwords without getting locked out by exploiting vulnerabilities in the iPhone's hardware or software. The latest GrayKey can crack four-digit passwords in an hour or two, and six-digit passwords in three days or less.

No phone is absolutely secure in the world, seven tips to keep your iPhone safe

To change to a longer password, open the Settings app and tap Touch/ Face ID and Passcode". Enter your current PIN and click Change Password on the next screen. Enter your password again and click on the password option below instead of entering a new password, you can then choose a custom alphanumeric password etc.

There is no absolutely safe phone in the world, seven tips to protect your iPhone

I know what you are thinking, who wants to enter a complex password every time they unlock their phone? ?Fortunately, recent generations of iPhones have convenient biometric options that eliminate the need to enter a passcode every time to access the device. Touch ID or Face ID gives you quick access to your phone without entering a password.

Of course, Touch ID and Face ID can ensure convenience but not security. Some people are worried that this unlocking method has security risks. There have been recent reports that if you use a "scissorhands" posture when taking photos, your fingerprints may be stolen.

To sum up, with a longer passcode, you can unlock or lock the device at any time, so that you have a backup method when Touch ID and Face ID don't work. For more information, see Apple's information about Touch ID and Face ID security.

2. Use 2FA to lock Apple ID

2FA (Factor Authentication), which stands for two-factor authentication, is an authentication method that is different from traditional password authentication. 2FA is A set of dynamic passwords is combined based on natural variables such as time, historical length, physical objects (credit cards, SMS mobile phones, tokens, fingerprints) and a certain encryption algorithm, and is generally refreshed every 60 seconds. It is not easy to obtain and crack, and is relatively safe.

Luckily, Apple offers 2FA on your Apple ID, and we highly recommend you take advantage of this feature.

Because you do this, you must always enter your password and the six-digit verification code sent to your trusted device before you can log in to your account from a new computer. This makes it difficult for hackers to access your Apple ID and large amounts of data.

3. Keep your iPhone up to date

Many people think it doesn’t matter if the system or applications are updated or not, but in fact, iOS (the system that the iPhone runs on) can be repaired if it is updated regularly. Vulnerabilities that could be used to attack your device in various circumstances. But again, no cell phone is completely secure. Because once a vulnerability is patched and Apple releases fix instructions, it gives hackers some additional information that can help them find the vulnerability, which means older systems may be at greater risk after that. So be sure to keep your iPhone system and all applications up to date.

4. Use VPN when connecting to public Wi-Fi

Public Wi-Fi is risky, so be careful when connecting. Anyone on the same network can see any unencrypted network transmission you make, and untrusted networks can actually perform a variety of man-in-the-middle attacks for phishing or other malicious purposes. For example, if you log into your bank's website using public Wi-Fi, you may not actually be logged into your bank's website, it may be a malicious website that closely resembles your bank's website.

So you can use cellular data in public and turn off Wi-Fi in settings, but that's not always possible since most people have data caps on their phones. But there's a great solution: a VPN, or virtual private network. With a good VPN, all your network traffic is connected to other servers through encrypted connections.

Of course, there are many VPNs that are unsafe or untrustworthy. Remember the first rule of free services on the Internet: If you're not paying, you're the product. There are thousands of roads, safety comes first, the Internet is not standardized, and relatives shed tears.

Finding a trustworthy, secure VPN may require you to do some research. An article by Brian Krebs provides detailed information about VPNs and how to choose a good one

5. Use other encryption methods

The encryption that comes with the iPhone is its best One of the nice features, but it's not perfect. As long as there is a chance to crack your iPhone passcode or obtain an unencrypted backup, your data is not safe. For your particularly sensitive data, such as passwords, social security numbers, credit card numbers, etc., you need additional encryption.

Using a password manager with strong encryption can be very helpful. Utilities like 1Password can store a separately encrypted vault in iCloud so that an attacker looking for passwords would need to first hack your phone or iCloud account to access the vault, and then hack the vault itself.

Similarly, Apple's own Notes app now allows the creation of encrypted notes, which can be protected with a password of your choice. Use a strong, unique password and your data will be secure.

For iPhone backups, consider using iTunes to back up to your computer and setting up iTunes to encrypt these backups. This encryption will use a separate password that you set, so be sure to use a strong, unique password.

6. Regularly review privacy settings

We can grant many permissions to apps, such as access to the camera, microphone, contacts, and your location. It's a good idea to keep track of which apps you grant permissions to, and revoke any permissions that aren't particularly needed. For example, if you post a photo on Twitter that you may not post again in the future, it may be a good idea to remove permission to view the photo from the Twitter app.

In Settings, click Privacy. Here is a master list of all permissions and the applications you grant them to.

Check all of these apps regularly and revoke any permissions you think an app doesn't need.

There is no absolutely safe phone in the world, seven tips to protect your iPhone

7. Beware of scams

Using an iPhone does not protect you from scam calls Or the infringement of fraudulent text messages. You need to always be wary of calls or messages from unknown senders. Be suspicious of any link you receive in a text message, even if it is from someone you know, as the sender may have been scammed or their phone may have been stolen.

If you click on a link in a text message and the website asks you to log in or provide other personal information, you should confirm this information with the sender. If this site looks familiar to you, consider visiting it via a bookmark rather than a link.

You may also consider using security software that can block and block scam calls and text messages, such as Malwarebytes for iOS.

The most secure mobile phone

As someone who owns an iPhone, I still feel quite safe. Because all current research shows that the iPhone is the most secure smartphone on the planet. However, if you don't follow the above methods, your iPhone may still be attacked. So don't have security just because you have an iPhone.

Using appropriate methods to ensure your own safety is often more important than having the most secure mobile phone.