How to put two in the right way SIM-Xiaomi Redmi Note 8 Pro: instructions with photos and tips

Why Redmi Note 8 Pro Needs a Special Approach SIM-map

Xiaomi Redmi Note 8 Pro is one of the most popular smartphones in the budget segment, but its hybrid slot for the smartphone. SIM-And unlike models with separate slots for each SIM, you have to choose between the second. SIM-This feature is due to the manufacturer's desire to save the interior space of the case without sacrificing functionality.

Many people have problems with the first install: the SIM is not defined, the slot jams or the phone asks for a restart. SIM-maps (you need nano-SIM), sloppy tray extraction or ignoring sequences. In this article, we will examine not only the basic instructions, but also nuances that are not written about in the official manuals.

It is important to understand that Redmi Note 8 Pro supports Dual mode operation SIM Dual Standby (DSDS) — This means that both SIMs will be active at the same time, but when you call one of them, the second one will temporarily shut down. 4G/3G/2G depending on the coverage, which can affect the speed of the Internet.

What are they? SIM-Cards are suitable for Redmi Note 8 Pro: formats and compatibility

The first thing to check before installing is the format of your SIM-map. Redmi Note. 8 Pro supports only nano-SIM (4FF), sized 12.3 × 8.8 × 0.67 If you have old-style cards (micro-SIM or mini-SIM), you'll have to cut them off or replace them from the operator:

• 🔹 Bad contact – SIM can fall out or not read.
• 🔹 Slot damage - metal contacts will bend when sloppy installation.
• 🔹 Overheating of the module - a loose fit leads to increased energy consumption.

Also note the compatibility of operators. the smartphone supports most Russian and foreign networks, but there are nuances:

Critical detail: if you use a SIM of an operator that does not support VoLTE (for example, some virtual operators), calls will only be made via the phone. 3G/2G, even if 4G It's available. It's relevant to the Redmi Note. 8 Pro, as it does not have a separate modem for 2G-call-up.

Step-by-step: how to insert two SIM-slot-card

Now, let's get to the practice. You're going to need to:

• 📱 Xiaomi Redmi Note 8 Pro (off!).
• 🔑 Paperclip or special key for extracting the tray (comes complete).
• 📇 Two nano-SIM cards (or one) SIM + microSD).

Step 1: Turn off your phone, which is a must to avoid damaging your contacts.

Turn off the power of the smartphone|Find the slot on the top edge (right)|Insert the paperclip into the hole before clicking.|Carefully pull the tray out.|Place the SIMs face down|Put the tray back up to the end.|Turn on your phone and check the network.-->

Step 2. Remove the tray. The slot is located on the top of the case (if you hold the phone with the screen to yourself). Put the paperclip in a small hole next to the slot and press until the characteristic click. The tray will extend a few millimeters — pull it with your fingers.

⚠️ Warning: Do not use sharp objects (needles, knives) - they can damage the fixation mechanism. If the tray does not come out, check if the tongue of the retainer inside the slot is bent.

Step 3. Set it up. SIM-There's a map on the tray:

- SIM 1 — upper slot (supports) 4G/3G/2G).

- SIM 2 — bottom slot (supports) 4G/3G/2G, But priority is given to the first SIMKA).

- MicroSD instead of microSD SIM 2 if you need memory).

The cards should be on the front side down (contacts to the back of the phone), make sure they fit tightly to the stops, and backlash will lead to poor contact.

Step 4: Put the tray back in before you click, turn on the phone and wait for the load.

• 🔄 Reboot the phone.
• 🔧 Check if the cards are properly installed (sometimes they shift when inserting the tray).
• 📶 Manually select the network in Settings → SIM-maps and mobile networks.

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If the tray is not inserted to the end, do not push! Check if the SIMs inside are skewed. Often, a slight swaying of the tray from side to side during installation helps.

Hybrid slot: what to choose - the second SIM memory-card?

Redmi Note 8 Pro is equipped with a hybrid slot, which means you can use either of two. SIM-card SIM + microSD. The choice depends on your priorities:

Advice for those who choose two SIM-map:

• 📞 Set up call forwarding from one SIM to another if you miss calls often.
• 🌐 B Settings → SIM-Select which SIM will be used for mobile Internet by default.
• 🔋 Turn off background traffic for the second SIM to save charge (in each app settings).

If you are on a memory card, consider:

• 📁 Redmi Note 8 Pro supports microSD up to 512GB, but write speed depends on the card class (recommended) UHS-I Class 10).
• 🔄 The card can be formatted as internal memory (system extension) or portable storage (file only).
• ⚠️ When formatting as internal memory, the data on it will be encrypted – after extraction, it will be impossible to read them on another device.

Frequent Mistakes and Solutions: Why They Don’t Work SIM-map

Even if you install the SIMs correctly, you may not be able to identify them, but let's look at the typical problems and how to fix them:

⚠️ Warning: If after installing the sim phone stopped turning on or constantly restarts, immediately remove the tray and check if the contacts are closed with a foreign object (for example, a piece of foil from the pruning). SIM-map).

Problem 1: The phone can't see one or both SIM-map

• 🔍 Check if the cards are inserted correctly (contacts should be directed downwards).
• 🔄 Restart your phone – sometimes the system doesn’t initialize the slot the first time.
• 🛠️ Clean the SIM and slot contacts with dry soft cloth (do not use alcohol!).
• 📶 Manually select the operator in Settings → SIM-map → [choose SIM] → Network operators.

Problem 2: SIM-map is defined, but no network

• 📡 Check the coverage of the operator in your area (you may be in the low signal area).
• 🔧 Reset network settings: Settings → SIM-map → Resetting mobile network settings.
• 🔄 Move the SIMs in places (sometimes the slot) SIM 1 runs more stable).
• 📱 Update the phone firmware – in older versions MIUI There were some bugs with Dual's work. SIM.

Problem 3: The phone asks PUK-code SIM-map

• 🔢 Enter. PUK-code (indicated on the plastic holder) SIM-cards or can be found by the operator).
• 🔄 If the SIMKA blocked after 3 wrong attempts, contact the communication salon with your passport.
• ⚠️ Don't enter. PUK-code at random - after 10 wrong attempts, the SIM is blocked forever.

Problem 4: Second SIM-card-less 4G

The Redmi Note 8 Pro is set by default 4G only SIM 1 To change that:

1. Go to Settings. → SIM-maps and mobile networks.
2. Choose. SIM 2 and turn on the option Enable 4G.
3. If the option is not available, check if your carrier supports it. 4G on the second simka (some tariffs have restrictions).

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If none of these methods worked, the problem could be a hardware malfunction of the slot, in which case, contact the service center - self-repair can damage the motherboard.

Set-up of two SIM-maps: priorities, internet, calls

Once the sims are installed successfully, you need to set them up correctly. Redmi Note 8 Pro offers flexible management options:

1. Selecting a SIM for calls and SMS default

• 📞 Go to Settings. → SIM-maps and mobile networks → Choice SIM-default-card.
• 📤 You can set a priority for outgoing calls, SMS and mobile Internet.
• 🔄 Please note: if you have chosen SIM 1 for the Internet, and SIM 2 for calls, when talking on the second SIM speed 4G fall to 3G.

2. Mobile Internet setting

• 🌐 B Settings → SIM-map → [choose SIM] → Access points (APN) Check that the parameters meet the operator’s requirements.
• 🔄 If the internet doesn't work, reset. APN to standard (Reset button in the upper corner).
• 📶 To speed up the internet, turn off AutoSearch Network and select the network manually (e.g, LTE only).

3.Management of Notifications and Roaming

• 🔔 B Settings → Notifications → Notification of SIM-You can turn off network change alerts for a specific SIM card.
• ✈️ For roaming, it is recommended to disable automatic network selection and manually specify the partner operator (this will save money and improve communication).

4. Battery saving

Two active SIM-These cards increase battery consumption by 15 to 20 percent to reduce consumption:

• 🔋 Turn off background traffic for the second SIM in the app settings.
• 📶 Put the second SIM in mode Only 2G (If you don’t need fast internet).
• 🌙 Enable Power Saving Mode for Second SIM in Settings → Battery.

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If you travel frequently, create network profiles for different regions. → SIM-maps can be saved settings APN roaming and switching between them quickly.

Alternative methods: eSIM and adapters for Redmi Note 8 Pro

The Redmi Note 8 Pro does not support eSIM (embedded SIM), but there are workarounds for those who want to use two numbers without physical cards:

1. Virtual second SIM via

• 📱 Install apps like Dingtone or Google Voice for the second number via VoIP.
• ⚠️ The downside is that the calls will go through the Internet and SMS — Just for the main SIM.

MicroSD adapters + SIM

There are adapters that allow you to insert nano-SIM into a microSD slot, but:

• ❌ Xiaomi does not recommend using them – it can damage the slot.
• ⚡ Short circuit risk if the adapter is poor.
• 📶 Reading speed of memory card will drop by 2-3 times.

3. Cloud Call Services

• ☁️ Services like Skype, WhatsApp or Telegram allow you to call over the Internet, saving minutes.
• 🔒 For business calls, it is better to use specialized solutions (for example, Zadarma or Mango Office).

⚠️ Note: If you choose an adapter for combination SIM + microSD, be prepared for the phone warranty to be cancelled. Xiaomi service centers equate such cases to mechanical damage.

FAQ: Answers to Frequent Questions about SIM-maps in Redmi Note 8 Pro