To install a SIM card in Samsung Galaxy A3, you do not need to have specific skills and abilities. Therefore, everyone can cope with this task. The only thing you need to know is what format cards are suitable for the specified phone model and how the card holder opens in it. Let's consider how to independently insert a SIM card into Samsung Galaxy A3.
What connectors does the Galaxy A3 come with?
To date, Samsung has released three modifications of the Galaxy A5. They differ from each other not only in the filling and screen size, but also in the placement and parameters of the SIM slots:
In Samsung Galaxy A3, the connectors are opened with a special key (ejector), which is supplied with the phone. However, if you do not have it with you, you can resort to a sewing needle or a simple paper clip.
SIM Crop Technology for Samsung Galaxy A3
If you decide to swap out your outdated smartphone for the new Galaxy A3, most likely you have a Mini or Micro SIM card. Therefore, before inserting an old-style SIM card, it will need to be cut to the Nano standard.
To give the card the required size, you can go to a phone sales point and perform the specified procedure there, paying a certain amount of money. However, pruning is quite realistic at home. This is done as follows:
After completing the preparatory work, the SIM card can be inserted into the phone.
Installing a SIM card in Samsung Galaxy A3
Installing the SIM card on the Galaxy A3 is done in the following order:
- Turn off the gadget and disconnect the power supply if it was charging at that time. Otherwise, the power amplifier or microcontroller responsible for power distribution may be damaged.
- Take the key clip, insert it into the round hole located on the cover of the card holder, and press lightly.
- When the tray comes out, pull it completely out of the phone. Do the same operation with the second slot (of course, if necessary).
- Insert a Nano-SIM, and if necessary, a second card or external microSD memory.
- Replace the connector by applying light pressure.
After completing the task, turn on the smartphone and check its performance. If the SIM card and memory card are detected, then everything is done correctly. If in the future you need to install a Nano-SIM in a Mini or Micro card holder, you can use special adapters sold in cell phone stores. 
The modern mobile phone is designed to simplify our lives. In practice, however, difficulties can arise.
For example, some gadget users note that not all smartphones are easy to use or not as advanced as their predecessors.
Therefore, this instruction will be useful to you if you do not know how to open the lid on Samsung Galaxy A3.
After all, it becomes so unpleasant when you do not know how to open the back cover, and, as luck would have it, there is no one nearby who can tell you or help you.
But everything is not so sad, and now you will find out how in this case it is necessary to properly handle the Samsung Galaxy A3.
Difficult task for many
If you ask the majority of users the question: "How to remove the cover on the Samsung A3?", They will not be able to answer anything.
It seems that the development company decided that to perform such an action, we must contact the centers service phones.
In the centers, specialists will do it quickly and easily. After all, for this they have a set of special tools: a "spatula" (a device that disconnects the mounts) and a Phillips screwdriver.
But what if you do not have the opportunity to contact the specialists or you simply do not have enough time to visit the service center? There is only one way out - to independently remove the back cover from the Galaxy A3.
How it's done
It is important not to use brute force when disassembling a smartphone. Otherwise, it can lead to negative consequences: most likely, the smartphone will not perform its functions.
Also, dents, scratches or other damage may appear on the device case, interfering with its normal operation and pretty spoiling appearance.
Therefore, disassembling the Samsung A3, strictly follow the instructions below.
- Find where the speaker of your smartphone is.
- You will see a small notch (crack) above the speaker (from the end). With its help, the cover is removed.
- Do not lift the cover up abruptly, otherwise you may damage the back panel... You can just push it up with your fingernail and gently pull it away from the device. Do not worry - it will not break. Never use sharp objects!
The back cover is open!
How to open the Samsung Galaxy coverA3and GalaxyA3 mini
To open the lid, specialists, in addition to the above tools, use a specialized hair dryer to warm it up.
It is quite difficult to do such a procedure at home. After all, you have to warm up the edges around the perimeter in the smartphone.
The phone is monolithic, so it is important to warm it up at a temperature of no more than 150 degrees (use a regular hair dryer for this).
After warming up, it is enough to gently pry off the cover with a plastic sharpened card, snapping off the screen from the case. Everyone - access to the internal modules is open!
If your goal is to completely disassemble the phone, then you must carefully read the instructions for complete disassembly. It is also easy to insert the cover - follow the steps in the opposite sequence.
If you know any other ways on how to remove the cover from Samsung Galaxy A3, share them in the comments. If you have any questions - ask, I will be happy to answer everything.
Samsung has again released new versions of the A3 and A5 models - this is already becoming an annual event.
With the help of these devices, the company indicates its true intentions - to consolidate its position in the middle price segment, presenting users with smartphones with a good set of useful functions.
As with any smartphone, these two have several hidden functions worthy of your attention. Here are some of the most successful, in our opinion:
Add / Disable Game Launcher and Game Tools
Every mobile gamer knows what Game Launcher and Game Tools are for. These apps allow you to turn off notifications while playing, and you can also take a screenshot of the game or even take a video with them. You can activate or deactivate them with just a couple of clicks.
All you need to do is go to Settings, find Advanced Features and go to the Games menu. Here you will find the options you need.
Game Launcher is very easy to enable or disable Take photos with ease
On most smartphones, you can take photos by pressing the volume keys. Some people prefer a button on the screen. Samsung has tried to accommodate the personal preferences of each and every one.
You can add a virtual key for your camera, this key can be placed anywhere on the screen when the viewfinder is on. Press this button and the photo is ready.
To activate access to this function, simply go to the Camera application, and from there to Settings (the gear in the upper right corner of the screen). Scroll down the menu and find the Floating Camera Button feature. Activate it and this button will appear in the Camera app.
Reminder: you can launch the camera by double-clicking the “Camera” button, you do not need to look for the camera icon on the desktop.
The floating camera button can be activated in the settings Change the look of the interface
Some people (myself included) think that the TouchWiz interface is extremely ugly, which cannot be said about the "bare" Android. So, now you know that the appearance of the interface can be changed using different themes. And although this will not solve all the problems, at least it will make you more enjoyable to use your phone. You can also download wallpapers and icon packs.
The main drawback is the price. Ready to spend 120 rubles on an icon set?
Fortunately, some themes / wallpapers / icons are available completely free of charge, and some of them look really good. You will find them in the settings under Wallpapers & Themes. You can also access this section by pressing the background of your screen for a few seconds, then click on the Wallpaper and themes button that appears in the lower left corner of the display.
Use "protected" files
And while many loudly proclaim that they have nothing to hide, what can be found on their phone or elsewhere is a feature that allows you to hide certain things.
When you hand the phone to your mom, you may not want her to see your party photos. Or maybe you don't want your girlfriend to see pictures of you dancing with other girls. Even if you haven't done anything wrong, making excuses is always unpleasant.
To avoid such troubles, Samsung added an option to protect files, first it appeared on the Note 7. You can put everything you want to keep in a certain folder, and you can restrict access to this folder with a password or fingerprint.
The only condition for using this feature is that you have to use a Samsung code. Just go to the Applications menu, then in Samsung Apps and open Secure File. The rest is up to you.
Place your sensitive information in a secure folder Receive notification reminders
Has it ever happened: you receive a message on WhatsApp during an important meeting, and after its end, half an hour later, you completely forgot to read the message?
Samsung has carefully thought out and introduced the notification reminder function: if you forget to read the notification, the phone will remind you of this.
Of course, you can choose the types of notifications, and also choose which app can send you reminders.
Go to the Access menu in the settings, and then to the Notification reminders section. Here you will also find other interesting functions such as the "magnifying glass".
This is a very useful feature for the forgetful. Activate "simplified" mode
While advanced users will appreciate the customizable welcome screen, some of us lean towards simpler menus and larger font sizes.
You can activate this feature in the settings. But be careful - the icons will grow to huge sizes, even the notification menu will be changed!
To activate this mode, go to Settings and then select the Simple Mode function and activate it.
Simple Mode lives up to its name Some of the tricks that are already on other smartphones from Samsung can be used on the 2017 A3 / A5 models.
Send SOS signal
You can send an SOS signal if you suddenly find yourself in trouble: go to Settings> Advanced> SOS signal, as soon as the option is activated, you can add a recipient. Now all you need to do to send an SOS signal is to press the power off key three times.
Split screen function
The A5 has a split screen function. To get to it, click on the multitasking symbol, but remember that not all applications are compatible with this mode. But Google applications (Gmail, Play Store, etc.) have no problems with this mode.
Disable Upday
Samsung has decided to equip its devices with its own information system called Upday. New Galaxy A3 and A5 are no exception to the rule, so all you need to do is swipe right to access the Upday widget.
Don't panic in advance - if you're more used to Google Now, or just want to remove an extra widget from your home screen, Upday can be turned off.
To do this, you need to press and hold the screen for a couple of seconds. At the bottom, you will see three keys (Wallpaper, Widgets and Layout). Scroll right to access the screen located to the left of the center one. You will then be able to turn it off with the click of a button.
Fixing applications
In some cases, it can be convenient to lock the screen in one particular application. Notifications from all other apps will be blocked, you won't be able to open other apps, so your privacy will not become public.
Then press the multitasking key to see a list of running applications. At the top right of the most recent app, you'll find a pin. Click on it and the screen in this application will be locked.
The picture on the left shows how to deactivate Upday; on the right - how to block the app screen from receiving notifications
Did any of our tips help you get the most (or the least) out of your Galaxy A3 or A5? Have you found any other useful tricks for using these smartphones? Share with us in the comments.
B & NBANK cards are also supported, but only those issued under the name MDM Bank. Support for new maps will be released at a later date.
How Samsung Pay works
Payment is very simple. To pay, just open the application with a swipe up and bring your phone to the bank terminal, confirming the purchase. All user data is stored in encrypted form, and information about virtual cards is transmitted to the terminal, which allows you to keep real data safe. In this case, no commission is charged.
What devices does Samsung Pay support?
Naturally, only owners of Samsung devices can use this system. But not all of the company's gadgets support the payment system.
On what devices Samsung Pay supported by:
- Galaxy S range (from Series 6 *);
- Galaxy A 2016 line (A5 and A7);
- Galaxy A 2017 line;
- Galaxy Note 5;
- Gear S3.
* - Galaxy S6 and S6 Edge only support NFC payments. Payment via MST is not available on these models.
The payment system will not work on other devices, as well as on those from this list that were purchased in another country. It is not worth asking how to connect Samsung Pay to smartphones with Root rights or unofficial firmware. there is no such possibility and never will be due to the lack of security on these devices.
How to set up Samsung Pay
How do I install Samsung Pay? There is no need to install a dedicated application. If your device supports this payment system, the application that you need to use it is included in the basic set and is in the list of all applications installed on the device. If the device is supported and Samsung icon Pay is not present, then you should follow these steps:
- Add.
- Go to "Settings", then to the "Accounts" section.
- Click "Add account". Select "Samsung account" from the list presented.
- Log in to your account or register by filling in all the required fields, as well as confirm the registration in the letter that will come to your e-mail.
- Check for device updates.
- Go to "Settings", find the section "About the device", in which you should select "Software update" and click on "Update".
- If there are updates, then confirm their installation and wait until the process is completed.
After that, the application icon should appear. If this does not happen, then you should contact service center or Samsung technical support.
When all the necessary actions are completed, all that remains is to configure the application.
How to set up Samsung Pay:
- Launch the application.
- Add your fingerprint or come up with an access code to confirm purchases.
- Click on the map symbol or the "add" button.
- Take a photo of the card or enter all the data manually.
- Click "Next" and accept the agreement.
- Press the SMS button. Enter the code that will come in the message and click "Send".
- Enter a signature on the screen.
Registration will be completed within 10 minutes. If this did not happen, and the card is supported, then you should contact the bank, because it is he who performs the blocking. It is possible that the card has restrictions that prevent it from being used in such payment systems.
How to use Samsung Pay
How to set up Samsung Pay is the most important question, but not the only one. You also need to know how to use Samsung Pay.
How to pay for your purchase:
- Swipe your finger up from the home key on your smartphone screen.
- When the image of the card appears on the screen, bring the device to the payment terminal.
- Confirm payment.
- You can remove the device from the terminal immediately, as soon as the second one establishes a connection with the bank, which will be evidenced by the inscription on its screen.
If you lose your smartphone, all data can be quickly and easily deleted using a special service from Find My Mobile. If necessary, you can delete all information manually by performing a general reset.
Samsung Galaxy S3 is a full-fledged pocket Personal Computer supplemented with functionality mobile phone... Released by Samsung Electronics, based on operating room Android systems, the communicator firmly took a position in its market segment and even entered the top three smartphones in 2012 along with Nokia Lumia 920 and Apple iPhone5.
High specifications, unique features (including the gaze-recognizing Smart Stay option), as well as the presence of a wireless charger have a decisive influence on the consumer's choice in favor of this brand of smartphone. However, at the first acquaintance with the device, difficulties may arise. As an example, let's try to open cover samsung Galaxy S3.
Fast navigation through the article
Opening the battery cover
Rear panel Samsung smartphone Galaxy S3 is made of plastic and serves as protection from unwanted elements (including moisture). The battery, SIM-card and memory card located under it can only be reached by removing the cover, acting carefully - without the use of force, in order to avoid the appearance of chips and cracks on its surface.
To open the back panel of the device correctly without damaging its structure, you need to:
- Find a special notch in the end upper part of the case, next to the USB connector;
- Hook the cover with your finger and slightly (without bending or twisting) pull it forward and then up.
Using a memory card
Storing large amounts of information on a mobile device often requires additional memory. Samsung Galaxy S3 supports cards up to 64GB. Using a flash card involves the following manipulations:
Installation
To install a memory card into the device, you need:
- Open the back panel of the smartphone;
- Insert the memory card into the slot provided for it, located under the battery, with the golden contacts down;
- Press the card until it clicks to lock it into the slot.
Retrieving
To remove the memory card, you need:
- Enter the "Settings" section in the main menu of the smartphone, select the "Memory" item, then "Disconnect the memory card" and press the "Yes" button;
- Remove the battery cover;
- Remove the card carefully.
PC connection
The Samsung Galaxy S3 smartphone, like any other modern mobile device, supports the function of connecting to a computer to install updates operating system, creation backups data, file movement and information exchange.
In order to connect your smartphone to a computer, you need to use a special USB cable. However, if the connection to the computer via the cord is established for the first time, the following settings must be made in the mobile device first:
- Go to the "Settings" section in the main menu of the smartphone and select the "Wireless networks" item;
- Then go to the "USB Tools" section, in the list that opens, select "Removable USB-storage";
- Connect your smartphone with a cable to the computer and click on the "Connect the drive to PC" button;
- After that on the screen mobile device the message "USB connected" will appear, you need to click on the "Connect USB-storage" button and then, in the unfolded notification from the system, click the "Yes" button.