Full guide: how to add a second user on Android

Many owners of modern smartphones do not even realize that their device supports full multi-user work, similar to computers running Windows or macOS. This function allows you to share personal data, applications and settings between different people using one gadget. Second user on Android - this is an ideal solution for families where parents and children use the phone, or for those who want to clearly separate work and personal profiles without buying a second device.

However, the implementation of this function has its own nuances, depending on the version of the operating system and the manufacturer's shell. Unlike simple guest mode, which resets data after logging out, a full-fledged account retains all changes, installed apps and files until you delete it. Let's look in detail at how to activate this feature and what pitfalls may be encountered along the way.

Differences between guest mode and a full user

Before moving on to the settings, it is critical to understand the difference between the two types of access. Guest mode designed for temporary transfer of the device. In this case, a “clean” profile is created that does not have access to your contacts, photos or call history. After exiting guest mode, all data created during the session is permanently deleted.

In turn, secondary user has almost the same rights as the device owner (administrator). He can install his applications from Google Play, customize wallpapers, connect his Google accounts and save files. This space is isolated: applications installed by the primary owner are not visible to the new user by default, although system apps remain shared.

⚠️ Warning: When switching between users, some system resources may be limited. For example, if the main user downloads a large file, the second user may experience a temporary decrease in Internet speed or processor performance.

Creating a permanent profile makes sense if the device will be used by a child or spouse on a regular basis. In this case, you won’t have to log in to the social network again each time or set preferences. However, it is worth remembering that each new profile takes up additional space in the device’s memory.

Checking compatibility and preparing the device

Unfortunately, the multi-user mode function is not available on all smartphones. Manufacturers of budget devices often disable this option in their shells to save RAM or simplify the interface. Before you start setting up, you need to make sure that your device supports this function at the level of system core and the user interface.

Usually this feature is present in devices running “pure” Android (Pixel, Motorola, Nokia series) starting from version 5.0 Lollipop, as well as in many models from Xiaomi, Samsung and Huawei. However, in some cases, for example, on smartphones with a screen diagonal of less than 6 inches, the manufacturer may hide this option. You can check the availability of the function only by going to the settings.

It is also recommended to free up space in the internal storage before creating a new profile. The system will need space to cache the new user and install a basic set of applications. It is advisable to have at least 2–3 GB of free memory to avoid errors when initializing the profile.

Step-by-step guide: creating a new profile

The process of adding a user is intuitive, but the path to the desired menu may differ depending on the model of your smartphone. In most cases, the setting is located in the section related to the system or general device management.

Follow the steps below to activate the function:

• 📱 Open the application Settings on your home screen.
• 🔍 Find the section System, General settings or Users and accounts.
• 👤 Click on the item Multiple users or simply Users.
• ➕ Tap the icon + or button Add user.
• ✅ Confirm the action in the pop-up window by clicking OK.

After confirmation, the system will begin the process of creating a profile. This may take anywhere from a few seconds to a minute depending on the speed of your phone's storage. At this point, the screen may flash or show a loading animation - this is normal system behavior when allocating new space.

Once the profile is created, the system will prompt you to configure it. You can do this right away or transfer the device to the new owner for initial setup. It is important to note that to activate all functions, the new user will need to enter his Google account information Google account.

Setting access rights and restrictions

When managing an additional profile, the device owner (administrator) has certain powers. You can see which applications are installed in the second profile and remove them if necessary. However, you cannot see another user's personal files, correspondence or browser history - this is protected by the principles of data privacy.

In some versions of Android, especially on tablet PCs, it is possible to set restrictions for the guest profile. You can prevent the installation of new applications, making calls, or access to certain network settings. On smartphones, these functions are often reduced or absent, giving the second user complete freedom of action within his isolated space.

Function	Main user	Additional. user	Guest mode
Access to contacts	Full	Own contacts	No access
Installing applications	Yes	Yes (separately)	Temporarily
Data saving	Permanently	Permanently	Deleted upon exit
Access to Wi-Fi settings	Full	Can connect	Limited

It is worth considering that some system Settings such as screen brightness, sound, and Wi-Fi connection may be common to all profiles or may depend on who last changed the setting. For example, if the second user turns off Wi-Fi, when switching to the main profile, the Internet will also be turned off.

Technical details of data sharing

Each user in the Android system has its own unique ID (UID). The file system layouts the data so that the /data/user/0 folder belongs to the owner, and /data/user/10 belongs to the second user. Applications installed by one user are physically stored in memory in a single copy (to save space), but their data (cache, logins) is duplicated for each profile.

Switching between profiles and management

To quickly switch between accounts, Android provides a convenient mechanism, accessible from the notification panel or lock screen. At the top of the lock screen you will see the current user's avatar. Clicking on it will open a menu for selecting available profiles.

The switching process is as follows:

1. Unlock the device or lower the notification curtain.
2. Click on the user icon (usually a circle with a person or your avatar).
3. In the list that appears, select the desired user.
4. Enter a password or pattern if the profile is protected.

When switching, the active profile is not closed completely, but is minimized to the background. This means that running applications continue to run, music playback can continue (depending on the OS version), and downloads are not interrupted. However, the active use of processor resources will be redistributed in favor of the profile that is currently on the screen.

⚠️ Attention: If the main user deletes an application, it will also be deleted for the second user, since the application’s system file is shared. However, the data of this application for the second user may remain in the cache until cleared.

Deleting a user and clearing data

If the second profile is no longer needed, you can easily delete it. This action will completely clear all data associated with this user: photos, downloaded files, installed applications and accounts. It will be impossible to restore this data after deletion without a preliminary backup.

To delete, follow these steps:

Go to Settings → Users. Click on the name of the profile you want to delete. In the menu that opens, select Delete user. The system will ask for confirmation, warning you that all data will be lost. Confirm the action, and the profile will be deleted, and the freed space will return to the general memory pool of the device.

Sometimes the system may not allow you to delete a user if some administrative rights are active in this profile or critical processes are running. In this case, try first switching to the profile to be deleted, logging out of all Google accounts and deleting linked devices, and then returning to the main profile and repeating the deletion procedure.

Possible problems and ways to solve them

Despite the well-functioning function, users may encounter a number of technical difficulties. One of the most common problems is the inability to find the “Users” menu item. As mentioned earlier, this is often due to manufacturer restrictions. In such cases, only installing custom firmware can help, which requires high skills and voids the warranty.

Another common situation is applications crashing when switching. Some apps are not optimized for multi-user environments and may not crash correctly. If you notice that instant messengers stop sending notifications in the second profile, check your battery settings and allow background work for these applications in both profiles separately.

⚠️ Attention: Menu interfaces and item names may differ depending on the version of Android (10, 11, 12, 13, 14) and shell (MIUI, OneUI, ColorOS). If you do not find the described items, use the search inside the settings for the word “User”.

It is also worth remembering the impact on autonomy. Having multiple active profiles, even when minimized, consumes more RAM and may drain your battery slightly faster due to background syncing processes. If your smartphone has less than 4 GB of RAM, using a second user may result in noticeable interface lag.

Is it possible to install WhatsApp on a second user?

Yes, this is possible. Since the second user is a sandboxed environment, you can install a second copy of WhatsApp there and register it to a different phone number. This is an excellent alternative to the built-in application cloning functions, as it ensures complete independence of accounts.

Does the second user see my calls and SMS?

No, he doesn’t. Call logs and messages are strictly separated. The second user has access only to those calls and SMS that were received or sent in his profile. However, if a call comes to the main number and the phone is unlocked by a second user, he may see an incoming call notification, but not the content of the conversation.

Does the second user take up a lot of memory space?

The empty profile itself takes up little space (a few hundred megabytes). However, as you install applications and save photos, the amount of space taken up will increase. System applications are not duplicated, but user applications (games, social networks) are installed anew for each profile, which can quickly fill up the memory.

What happens if I forget the password for the second user?

You can reset the second user’s password only from the main profile (administrator). You need to go to user settings, delete the current profile with the forgotten password and create it again. Data will be lost, so it is important to remember passwords or use biometrics.

Does the second user work on tablets without a SIM card?

Yes, on tablets this function works even better and more stable than on smartphones, since the Android interface for tablets was initially designed for multi-user mode. The absence of a SIM card is not an obstacle to creating and using additional profiles.