How to put the second right SIM-Map in Xiaomi Redmi Note 7: instructions with photos and tips

Xiaomi Redmi Note 7 is one of the brand’s most popular smartphones, still in use today for its balance of price and performance. Many owners of this device want to make the most of its capabilities, including support for two devices. SIM-However, not everyone knows how to properly install a second SIM to avoid problems with recognition or damage to the slot.

In this article, we will discuss the whole process in detail: from preparation to preparation. SIM-You'll learn what SIM card format is right for the Redmi Note 7, where the slot is, how to avoid typical installation errors, and what to do if the phone doesn't see one of the cards. SIM-Cards at the same time – for example, how to set priority for calls or mobile Internet.

If you just bought a used smartphone or simply have never used a second SIM, this guide will help you do everything quickly and without the risk of damaging the device. Even if you already have experience with other Xiaomi models, the Redmi Note 7 has its own nuances – for example, the features of the slot location or the Dual settings. SIM into MIUI differentiation.

What are they? SIM-The cards are supported by Xiaomi Redmi Note 7

Before inserting a second SIM card, you need to make sure that it fits the format and standard. Redmi Note 7 is equipped with a hybrid slot that supports:

• 📱 Two nano-SIMs (4FF) — If you have a different size SIM (micro or mini), you will have to cut it or replace it in the cabin of the operator.
• 🔄 Hybrid slot: you can install either the second SIM-card, or microSD card (up to 256 GB), simultaneously and SIM and flash drive can not be inserted.
• 🌍 Dual support SIM Dual Standby (DSDS): Both cards are active, but during a conversation, the second one is temporarily disabled.

Redmi Note 7 does not support Dual SIM Dual Active (DSDA) — This is a technology where both SIMs work simultaneously without interruption, which means that if you get a call on a second SIM while you're talking on the first SIM, the caller will hear the "busy" signal».

Also check that your SIM card supports the communication standards available in the Redmi Note 7:

⚠️ Note: If you use an old-style SIM card (for example, with only support for SIM) 2G), It may be unstable in pairing with 4G-In this case, we recommend replacing it with a modern one in the operator's office.

Where is the slot for SIM-Maps in Redmi Note 7

Unlike some Xiaomi models, where the slot is located under the battery, the Redmi Note 7 has it on the side edge.This makes access easier, but requires caution when removing the tray.

To find the slot:

1. Take the smartphone in your right hand so that the screen is directed to you.
2. On the left side face (near the volume buttons) you will see a small hole with a metal rim - this is the slot for the SIM-map.
3. Nearby may be an inscription SIM or pictogram of a SIM card.

If you are not sure if you have found the right place, compare with the photo below (conditional location):

Don't confuse the slot for SIM-map:

• 🔊 Microphone (located on the lower edge next to the connector) USB-C).
• 📍 The sleeve of the sleeve (if any) is on the top of the sleeve).
• 🔋 Charging indicator (LED next to the front camera).

Step-by-step: how to insert the second SIM-map

Now, let's move on to the installation process.

• 📱 Xiaomi Redmi Note 7 (Switched off or on – no matter what).
• 🔧 Paperclip or special key to extract the tray (comprised with the phone).
• 📇 Two nano-SIMs (or one sim) + memory-card).

If you don't have a brand key, you can use a simple clip that is straightened so that the tip goes into the slot hole, and don't use needles, pins or other sharp objects, because they can damage the mechanism.

Follow the instructions:

1. Remove the tray: Put the tip of the paper clip into the slot hole and press slightly until the tray is pushed out. Don't put too much effort into it -- the mechanism should work with a light press.
2. Put it down. SIM-Cards: There are two nests on the tray: SIM 1 - usually the top (supports) 4G). SIM 2 or microSD - lower (hybrid).

Set the SIM cards with metal contacts down, combining the bevelled corner of the card with the beveled corner of the nest.

Put the tray back in:

Carefully press the tray into the slot before you click. Make sure it sits straight - if the tray is skewed, remove it and try again.

Turn on the phone:

If the smartphone has been turned off, turn it on and wait for the initialization of networks (usually takes 10–30 seconds).

After inclusion in the status bar, indicators of two will appear SIM-If one of the cards is not identified, try it:

• 🔄 Reboot the phone.
• 📶 Manually select the operator in the settings (Settings) → SIM-maps and mobile networks → [choose SIM] → Network operators).
• 🔧 Check if the SIM is properly installed (sometimes contacts are not touched due to contamination or deformation).

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If the tray is jammed and can't be removed, don't try to pull it out by force. Put the phone down on the soft surface with a screen and slightly press the tray on the back side, which sometimes helps to move the mechanism from the dead point.

Setting up two SIM-card MIUI

Successful SIM card installation is only half the battle, and to make them work properly, you have to adjust the settings in the system. In Redmi Note 7 (as in other Xiaomi smartphones), these settings are in the section. SIM-maps and mobile networks.

Open the settings and follow the following steps:

1. Assign names. SIM-Maps: By default, they are called Simka 1 and Simka 2. To avoid confusion, rename them - for example, Work and Personal. To do this, tap the name of the SIM in the settings and select Rename.
2. Set priority for calls: In the Select section SIM-Call cards can be specified which SIM to use by default, and there is the option to always ask, in which case, when an outgoing call, the phone will prompt you to choose a card.
3. Choose. SIM For mobile Internet: In the Mobile Internet, specify which SIM will be used for data transfer. Please note: if you choose Simka 2, Simka 1 will not be able to receive calls simultaneously on the network. 4G (constraint DSDS).
4. Activate roaming (if necessary): Each SIM has a data roaming switch in its settings. If you travel frequently, turn it on, but be aware of possible additional fares.

Also in MIUI There is a useful function of the double 4G (It's not available in all firmware versions, and it allows both SIMs to be online. 4G alternately, but it can reduce battery life:

1. Go to Settings. → SIM-maps and mobile networks → Double. 4G.
2. Activate the switch.
3. Choose which SIM will be the main one for the Internet.

⚠️ Note: If the mobile Internet does not work after setting up, check APN-Sometimes operators (especially virtual operators, for example, Tele2 or Yota) requires manual settings. → SIM-maps and mobile networks → [choose SIM] → Access points (APN) Add a new profile with data from your operator.

What to do if the second SIM-card

Even if you did everything according to the instructions, sometimes the second SIM can be undetected. Let's look at the typical causes and ways to eliminate them.

If none of these methods worked, try:

• 🔄 Reset network settings: Settings → System and device → Additionally. → Resetting settings → Reset the network settings.
• 📱 Test the SIM on another phone: if it does not work there, the problem is in the card (refer to the operator).
• 🔧 Update firmware: sometimes SIM card recognition bugs are fixed in new versions MIUI.

In rare cases, the problem may be in the slot itself, for example, if it is contaminated or damaged, to clean the contacts:

1. Remove the tray and SIM cards.
2. Take a soft brush (for example, for drawing) or a cotton swab soaked in alcohol.
3. Carefully clean the contacts in the nests of the tray and on SIM cards.
4. Let it dry for 1-2 minutes before re-installation.

How to optimize the work of the two SIM-map

Using two SIM cards at the same time is convenient, but can cause some inconvenience - for example, a quick battery drain or missed calls. SIM comfortable:

• 🔋 Saving Charge: Turn off network search for a SIM you rarely use (Settings) → SIM-map → [choose SIM] → Turn on SIM-This will reduce battery consumption.
• 📞 Call management: In call settings (Settings) → Annexes → Calls can be enabled with the option Always Ask to select a SIM before each call.
• 🌐 Internet and Calls: If you need to take calls to both SIMs, but you need speed 4G, Set the main SIM for the Internet, and the second limit the network 3G (Settings → SIM-map → Preferred type of network).
• 📵 In the plane mode: If one of the sims interferes (for example, during an important conversation on the other), turn on the "On the plane" mode for it separately: swipe down the notification panel → Hold the Flight Mode badge. → select a sim.

Also in MIUI There is a function of intelligent switching. SIM-It automatically selects a SIM for calls or the Internet depending on the quality of the signal:

1. Go to Settings. → SIM-maps and mobile networks → Intelligent switching SIM-map.
2. Activate the switch.
3. Set up rules (such as priority for calls or data).

If you travel frequently, pay attention to your roaming settings to avoid unexpected expenses:

• Turn off data roaming for SIMs that you do not use abroad.
• Set a traffic limit in your mobile network settings.
• Use applications like My Data Manager to monitor your internet usage.

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If it is important for you to take calls to both SIMs without interruption, set up the main SIM on the SIM. 4G, And the second one. 3G. This will help avoid conflict while using voice and data.

Frequent Mistakes and How to Avoid Them

When working with two SIM-And these are the common mistakes that people make with maps, and the ways to prevent them:

• 🔄 Installing a SIM in a hybrid slot without removing a microSD: Many people forget that the Redmi Note 7 does not support simultaneous operation of two SIM cards and a memory card. If you need both SIMs, you will have to abandon the microSD.
• 📶 Ignoring settings APN: If mobile internet doesn’t work, users often blame the operator or phone, even though the problem lies in the wrong parameters. APN. Always check this item when setting up a new SIM.
• 🔋 Uncontrolled battery consumption: Two active SIM cards increase power consumption. If you notice that the phone is running too fast, turn off the network search for an unused SIM or put it into mode. 2G.
• 📱 Use of damaged SIM cards: SIMs with scratches, chips or contaminated contacts may not work smoothly. Before installing, inspect the card - if the contacts are dimmed, gently clean them with a swallow.

Another common mistake is ignoring firmware updates. MIUI (for example, MIUI 10 or lower) There may be a Dual bug SIM, which are fixed in newer builds:

1. Go to Settings → About the phone → System update.
2. Click Check for updates.
3. If a new version is available, download and install it.

It is also not recommended:

• 🔧 Remove the tray when the phone is turned on (although the Redmi Note 7 supports hot SIM card replacement, it is better to be safe).
• 📵 Use SIM cards of different operators with incompatible standards (for example, only one SIM card) 2G, other — 4G).
• 🔋 Charging your phone while replacing your SIM cards – this can lead to a short circuit if the tray or contacts are wet.

FAQ: Answers to popular questions