6 Ways to Solve iTunes Error 21 While Restoring iPhone

Recently, we got feedback from some users of 3uTools that they could not solve iTunes error 21, so here are 6 ways to deal with that.

How to Fix Apple ID Is Locked Or Disabled?

If you change Apple ID and Password frequently on your iDevice, Apple may think your iDevice's Apple ID existing security threat.

How to Fix iTunes Error 9006 When Updating or Restoring iPhone?

Recently, some users got iTunes error 9006 when they tried to update iPhone to iOS 10.3.2/iOS 10.3.1 with iTunes.

How to Associate IPA Files on iPhone Using 3uTools?

An .ipa file is an iOS application archive file which stores an iOS app. Each .ipa file includes a binary for the ARM architecture and can only be installed on an iOS device.

6 Security Tips If You Really Need to Use Public Wi-Fi on Your iPhone, iPad or Mac

​Deep down, we know that using an open, unsecured Wi-Fi connection is risky.

How to Fix iPhone Keeps Restarting in iOS 10.3.2?

So here, in this post, we will show you some basic tips to help you fix this annoying issue.

How to Transfer Video From Laptop to iPhone Using 3uTools?

It's possible that you can transfer your video from your windows PC to your iPad or iPhone?

How to Make mach_portal Jailbreak Stable on iPhone 7/7 plus?

Here is how to make mach_protal jailbreak stable.

iOS 10.3.2 Is Available in 3uTools For Users Flashing

On Monday, Apple released iOS version 10.3.2 to the public, after a month-long beta testing period for each revision.

Fix: Why Can’t I Bind Apple ID Using 3uTools?

If you have turned iPhone’s two-factor authentication on, then you can’t bind Apple ID using 3uTools successfully.

How to Disable iMessage Spam on Your iPhone?

But spam iMessage texts are a growing problem now. This tutorial aims to show you the best way to disable iMessage spam on your iDevice.

How to Easily Get Back iPhone Restrictions Passcode?

This is tutorial is for those who have forgotten their restrictions Passcode. Let’s see.