Preparation for installation SIM-maps 7A
Smartphone Xiaomi Redmi 7A It remains a popular choice due to the balance of price and functionality, but even a simple operation like installation is a good choice. SIM-Unlike the flagship models with retractable trays, it uses a classic removable rear body - it is both a plus (it is easier to replace the battery) and a minus (the risk of damaging the latches).
Before you start, make sure you have everything you need: a nano-SIM (or micro-SIM adapter if you use an outdated format), a paper clip or special key to remove the tray (although Redmi 7A does not need it), and a clean wipe - dust and debris can get inside the case when you remove the lid. If you move from another phone, remember to save contacts: the Redmi 7A does not have a memory card slot and SIM at the same time, so priority is given to either two SIMs or one SIM + microSD.
What are they? SIM-The cards are supported by Xiaomi Redmi 7A
Xiaomi Redmi Model 7A It is equipped with a hybrid slot for two nano-SIMs (4FF) or one nano-SIM + MicroSD cards up to 256GB, which means you wonβt be able to use two at once. SIM-And you have to choose between cards and memory extensions:
- πΆ 2G: GSM 850 / 900 / 1800 / 1900
- πΆ 3G: HSDPA 850 / 900 / 1900 / 2100
- πΆ 4G: LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 38(2600), 40(2300)
Important: If you plan to use the Redmi 7A abroad, check with the operator whether it supports roaming in the right ranges. For example, in the US, the phone will not work with CDMA networks (like Verizon or Sprint), and in Europe, you may experience problems with LTE in the 700 MHz band (band 28).
Where is the slot for SIM-maps 7A
Unlike most modern smartphones, where the slot is located on the side of the side, in the Xiaomi Redmi 7A it is hidden under the removable back cover.
- Turn off the phone (required!) This will prevent short circuits from accidentally touching the contacts.
- Place the device on a flat surface with the screen down.
- With a nail or plastic card, pull the lid from the lower end (there is a small gap).
- Carefully keep the map along the body until all the latches are snapped. Don't force it, the lid must be removed without creaking!
Under the cover you will see three slots:
- π Above - battery (removable, 4000 mAh).
- π± The bottom left is a slot for the first nano-SIM (or microSD).
- π± At the bottom right is a slot for the second nano-SIM.
What to do if the lid is not removed?
Step-by-step instruction: how to insert SIM-map
Now, let's get to the process, and follow the instructions carefully so you don't damage the contacts or the map itself.
βοΈ Preparation for installation SIM-map
- Remove the battery (optional, but recommended) and make it easier to access slots and reduce the risk of contact damage, and the battery is locked with a latch, pull the tongue up.
- Identify orientation. SIM-There's a cutout pattern on the slot, and the angle of the card should match the angle in the picture. For nano-SIM, the cutout is in the top right corner.
- Insert the card into the slot before the click. It should lie flat, without distortion. If the card dangles, you use the wrong format (for example, micro-SIM without an adapter).
- Install the battery back if you've removed it. Make sure the contacts of the battery match the contacts on the phone.
- Close the back cover. Start at the top, then snap the bottom, pressing the perimeter evenly.
Do not turn on the phone unless the lid fits tightly into the body - this can cause dust to hit the motherboard and further problems with the sensor or speaker.
π‘
If you have two. SIM-Cards, insert the main (with the Internet) in the slot SIM1 β It is better at catching the network in conditions of weak signal.
Frequent Mistakes and How to Avoid Them
Even with the seemingly simple process, users often make mistakes that lead to a breakdown. SIM-This is the most common card or phone damage:
| Mistake. | Effects of consequences | How to fix it |
|---|---|---|
| Disparity in the SIM format | The card is not recognized or dangled in the slot | Cutting micro-SIM to nano-SIM or using an adapter |
| Skewing | Slot pins, lack of network | Remove the map and insert exactly, if necessary, straighten the contacts with a toothpick. |
| Installation without turning off the phone | Short circuit, software failure. | Remove the card, restart the phone, reset the installation |
| Using metal objects to remove the cover | Scratches on the body, damage to latches | Replace the cover or use a plastic card |
β οΈ Attention, if after installation SIM-The phone doesn't see the network, check if the service is activated. 7A sometimes get tweaked APN β You can reset them in the Settings menu. β SIM-maps and mobile networks β Access points (APN) β Reset to factory.
How to extract SIM-map from Xiaomi Redmi 7A
The process of retrieving the map is reversed, but there are some nuances here. The main rule is, don't pull the map over the edge so you don't bend the contacts.
- Turn off the phone and remove the back cover.
- If the battery is in trouble, remove it (optional).
- Nail or plastic card carefully tucked SIM-side-map where there are no contacts.
- If the card does not lend itself, slightly press it from above - it should "jump out" of the fixers.
If you plan to not use your phone for a long time (for example, when selling), remove it. SIM-The slot's contacts oxidize over time, and the dust can disrupt the connection.
π‘
At Redmi. 7A slot SIM-The card has no spring mechanism, the card is fixed only by a tight landing, so do not apply force when extracting, so as not to break the plastic guides.
Checking after installation
After turning on the phone, follow a few steps to make sure that SIM-map recognized correctly:
- Check the network indicator in the top bar. If the operator name shows "No Network" or "Emergency Calls Only", restart the phone.
- Try making a test call or sending an SMS. If the call doesn't pass, check your balance or network settings.
- Go to Settings. β The phone. β Status SIM-This should show the phone number, IMEI operator name.
If the phone can't see SIM-map, try it:
- π Reset the device.
- π± Reinstall the card (it may not be inserted until the end).
- π§ Reset network settings in Settings β System system β Resetting settings β Resetting Wi-Fi, Mobile Network and Bluetooth.
- π‘ Manually select the operator in the Settings β SIM-maps and mobile networks β Choice of network.
β οΈ If after all the manipulations SIM-The card is not identified, the problem may be in the card itself (damaged) or in the phone slot (contact oxidation), in the latter case, cleaning with alcohol or replacing the slot in the service center will help.