Smartphone owners Samsung Galaxy J5 often face the need to change a device or reset the system to factory settings. At such moments, the safety of the phone book becomes critically important. Although modern cloud services offer automatic synchronization, many users still prefer to store important numbers directly on the carrier chip in order to have access to them from any device.
The procedure for backing up numbers on SIM card in the TouchWiz shell or newer versions of Android based on J5 has its own characteristics. Failure to complete the steps correctly may result in long names being cut off or additional numbers being lost, since the physical media has strict limitations on memory capacity and data format.
In this guide, we will examine in detail the algorithm of actions that will allow you to safely move your records. We will look at the standard system tools, as well as nuances that are often overlooked when working with models produced in 2015-2017.
Features of storing data on a SIM card
Before you start transferring, you need to understand the technical limitations of the media. SIM card this is not a full-fledged drive, but a limited file system chip developed decades ago. Unlike internal memory Samsung J5 or Google account, the telecom operator's chip is not designed to store multimedia content or complex data structures.
The main problem is the encoding and length of the field for the subscriber's name. Old GSM standards often limit the number of characters in a name to 10-15 characters, and may also incorrectly display Cyrillic or special characters. Therefore, when transferred, names like "Mom Work Mob" may turn into a series of question marks or be cut off.
⚠️ Attention: A SIM card usually holds from 250 to 500 entries. If your phone book exceeds this limit, some of the contacts simply will not be copied, and the system may not issue a warning about overflow until the process is completed. Samsung J5 exceeds this limit, some contacts simply will not be copied, and the system may not issue a warning about the overflow until the process is completed.
In addition, only the main numbers are stored on the chip. Any additional fields such as email, address, birthdays or second mobile number will be permanently lost upon export. That is why experts recommend using this method only as a temporary measure or to reserve the most important numbers.
Preparing a Samsung J5 device for transfer
To successfully complete the operation, your Samsung Galaxy J5 must be configured correctly. Make sure that the SIM card is correctly installed in the slot and is recognized by the system. You can check this by looking at the top status bar: the signal level and the name of the operator should be displayed there.
It is important that the contacts you plan to transfer are physically in the phone’s memory or Google account, and have not already been copied from the SIM card (otherwise a cycle will occur). Open the application Contact and make sure that the numbers you need are displayed in the list.
Before starting mass copying, it is recommended to check the condition of the chip. If the card is very old and has physical damage to the contacts, the writing process may be interrupted. Insert the card into another phone and try saving one test number there to make sure the media is working properly.
Step-by-step guide: export via the Contacts application
The most reliable way to transfer data on series models J5 is to use the built-in contact management application. The interface may differ slightly depending on the version of Android (5.1, 6.0 or 7.0), but the logic of actions remains the same for the entire line Samsung.
First open the standard application Contact. In the top right corner of the screen, look for a menu button, which may look like three vertical dots or the word “More.” Click on it to expand the list of available operations.
☑️ Check before export
In the menu that opens, select item Manage contacts or immediately Import/Export contacts. The system will prompt you to select the direction of the operation. You need item Export contacts or Copy contacts. Next, select “Phone” or “All contacts” as the source, and select “SIM card” as the target.
After selecting a goal, the system will ask you to mark specific entries. You can select individual numbers or click All in the top corner for bulk copying. Confirm the action with the Done or Copybutton. The process may take from a few seconds to a minute depending on the number of records.
Alternative method through system settings
If the operation cannot be performed through the contacts application, you can use the system settings menu Android. This method is often more stable on older versions of firmware installed on Samsung J5. It allows you to manage the SIM card memory at a deeper level.
Go to Settings the main menu of the smartphone. Find the section Contact (sometimes it is located inside the "Applications" or "User and Accounts" group). In the list of options, select Import/Export contacts. Here the algorithm is similar to the previous one: select export from the phone to SIM.
Why might the method through the settings be better?
The system menu often bypasses some software bugs of the TouchWiz interface that may arise in the "Contacts" application. In addition, the copy progress bar is more clearly visible here.
In some versions of the shell TouchWiz the path may look different: Settings → Application Manager → Contact → Storage → Contact Management. If the standard path does not work, try finding contact management through the settings search by entering the word "contacts" in the search bar at the top.
Solution and limitations of the format
During the transfer process, users Samsung J5 often encounter errors. The most common of them is a message stating that “Contact is not saved” or “Memory is full.” This directly indicates that the recording structure does not meet the requirements of the GSM standard used by the SIM card.
Often the problem lies in the number format. If the entry contains a number in international format with a plus and brackets, or contains additional digits (for example, separated by a comma for a pause), the SIM card may reject such an entry. It is necessary to edit the number, leaving only the numbers.
| Error type | Probable cause | Solution method |
|---|---|---|
| Contact cut off | Name longer than 14-16 characters | Shorten the subscriber's name before copying |
| Kryakozyabry instead of letters | Encoding incompatibility | Use only Latin or basic Cyrillic alphabet |
| Error memory | SIM full | Remove old unnecessary numbers from the card |
| No "Company" field | SIM format limitation | Take it for granted, no data are transferred |
It is also worth considering that when copying several numbers with the same name (for example, “Service” from different operators), they can merge or overwrite each other. It is recommended to uniqueize names before exporting by adding operator prefixes.
Importing contacts from a SIM card to a new phone
After you have successfully saved the data to the chip, the task of restoring it arises. When you install a SIM card in a new smartphone (whether it's another Android or an iPhone), the import procedure usually starts automatically when you turn it on for the first time or is offered in the setup wizard.
If you don't receive an automatic suggestion, open the app Contact on the new device. Go to the control menu (three dots or settings) and select Import contacts. Specify "SIM card" as the source, and select the device memory or Google account as the destination for reliable backup.
Save contacts in your Google Account, not on your SIM card. This will allow you to restore your phone book even if the SIM card is lost or broken, simply by entering your login and password.
It is important to note that after importing it to a new device, it is recommended to check the integrity of the data. Make sure all numbers are legible and names are displayed correctly. If you're moving to iOS, the process may take longer as iPhone requires import confirmation through iCloud settings or directly in the contacts app.
Modern alternatives and cloud storage
Using a SIM card to store contacts is considered an outdated method in 2026-2026. Smartphones Samsung J5 and newer offer much more effective tools. Synchronization with your account Google allows you to save an unlimited number of contacts, photos, email addresses and change history.
To enable synchronization, go to Settings → Accounts → Google. Make sure the switch next to the word "Contacts" is activated. In this case, all new recordings are automatically saved in the cloud. Even if the phone is lost or broken, you can restore your entire phone book in a couple of seconds on any device.
⚠️ Attention: The settings menu interface may vary depending on the version of Android installed on your J5. If you do not find the described items, use the settings search or refer to the official documentation for your specific firmware version.
There are also applications from telecom operators and third-party backup utilities that create .vcf files. This file can be saved to a microSD memory card or sent to yourself by email. This is a more modern and reliable analogue of storage on a SIM card, devoid of all the above-mentioned restrictions on name length and number of characters.
A SIM card is an emergency option for quickly transferring base numbers, but not reliable storage for long-term use.
Why did contact photos disappear after the transfer?
The SIM card does not technically support storing graphic files. When exporting to a SIM card, only text data is saved: name and phone number. Photos, addresses and additional numbers remain in the phone's internal memory or are deleted if you select the "move" rather than "copy" option.
Is it possible to restore contacts if the SIM card is locked with a PIN code?
No, the SIM card memory cannot be accessed without unlocking. If you change your phone and do not remember the PIN code, you will need the PUK code, which can be found on the plastic SIM card holder or found in your operator’s personal account. Without unlocking, data transfer is impossible.
What to do if contacts were copied with the same names?
This is a common situation when merging data from different sources. In the application Contact on Samsung J5 there is a function "Merge duplicates". It is usually located in the contact management menu. The system will offer to find similar entries and combine them into one card, saving all the numbers.