How to insert a SIM card in Xiaomi Redmi 5A: deal with the hybrid slot

Before you start: What you need to know about SIM cards in Redmi 5A

Xiaomi Redmi 5A is one of the brand’s most popular budget phones, released in 2017. Despite its modest specs, the model is still in demand due to its reliability and simplicity. However, many users have difficulties installing a SIM card – especially if it is the first experience with hybrid slots.

The main feature of the hybrid slot in the Redmi 5A is the ability to choose between a second nano-SIM or a microSD card (up to 256 GB), which means that you can not use two SIMs and a flash drive at the same time. You will have to sacrifice either a second line or additional storage. In this article, we will discuss how to insert the SIM card correctly, what tools you will need and how to avoid typical errors.

Important: if you buy a smartphone with your hands, check the integrity of the SIM card tray. Often previous owners lose or break the key to extract, and the tray itself can be deformed - this will complicate the installation.

What SIM cards support Xiaomi Redmi 5A

The Redmi 5A works with two types of SIM cards:

• 📱 Nano-SIM (4FF) — The main format for the first slot is the smallest SIM card in size. 12.3 × 8.8 If you have an old micro-SIM or mini-SIM, you will have to cut it or replace it in the cabin of the operator.
• 📱 Nano-SIM or microSD is a hybrid slot (second), and you can choose between a second SIM card of the same format or a memory card. 5A Does not support eSIM.

If you plan to use two SIM cards, make sure that both are trimmed to the size of nano-SIM. Trying to insert a micro-SIM or mini-SIM without an adapter will lead to jamming of the tray or damage to contacts. Also check whether your carrier supports 4G networks on both SIMs - some tariffs limit speed on the second line.

What you will need to install a SIM card

To insert a SIM card into the Xiaomi Redmi 5A, prepare the following tools and accessories:

• 🔧 The key to extract the tray (complete with your smartphone) If you lost it, a paper clip, an unbend stationery button or a thin needle will do.
• 📱 Nano-SIM (one or two, depending on the configuration) If the SIM card is of a different size, use an adapter or trim it with a special stapler.
• 🔍 Good lighting – the tray and slot are small, so it is better to work in bright light so as not to damage the contacts.
• 🧴 Alcohol wipes (optional) – to clean the contacts of the SIM card and slot, if the smartphone has not been used for a long time.

If you plan to use a microSD, make sure it doesn’t exceed 256GB (the maximum Redmi 5A supports). Larger cards may not be recognized, and it’s also recommended that you format the flash drive in the FAT32 or exFAT file system before installing.

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If the tray extraction key is lost, do not use too thick objects (such as nails or toothpicks) This can damage the locking mechanism.

Step-by-step: how to insert a SIM card in Redmi 5A

Now, to the process itself, follow the instructions carefully to avoid damaging the slot or the SIM card.

1. Turn off your smartphone. It's a must! SIM card installation with your phone on can cause the communication module to malfunction or even short circuit (if contacts are closed) and wait for the screen to shut down completely.
2. Find a SIM card slot. In Redmi 5A, it's on the left end of the case (if you look at the screen), and you'll see a small hole with a metal rim.
3. Remove the tray. Put the key (or paper clip) into the hole to the point. Press with a little effort, the tray should jump 1-2 mm. Then gently pull it over.
4. Set the SIM card(s). Look at the tray, it has a SIM layout. The Nano-SIM is set with the contacts down, bent angle to the corresponding recess. If you use two SIMs, the second is installed in a hybrid slot (right side of the tray).
5. Put the tray back in place. Put it back in the slot before you click. Make sure the tray sits flat -- if it protrudes or skews, pull it out and try again.
6. Turn on your smartphone. After you boot, check if the network is in the status bar. If there's no signal, restart your phone or check if the SIM card is installed correctly.

If the SIM card is not determined after installation, try the following steps:

• 🔄 Reboot your smartphone.
• 📶 Check if the Flight mode is enabled (Settings) → SIM-maps and mobile networks).
• 🔧 Remove the SIM card and install it again, making sure that the contacts are not contaminated.
• 📞 Contact the operator to check the activity of the SIM card (it may be blocked).

Common Mistakes and How to Avoid Them

Even with the seemingly simple process, many users make mistakes that lead to a broken SIM card or slot damage.

You should pay special attention to the hybrid slot. If you decide to use a microSD, remember:

• 📁 The memory card must be formatted in FAT32 exFAT (NTFS unsupported).
• 🔋 When you first connect a flash drive, the smartphone may offer to format it - agree, but pre-copy important data.
• 📵 If after installing the microSD stopped working second SIM card, check whether the tray moved - sometimes contacts close.

How to set up SIM cards after installation

Once a SIM card is successfully installed, you need to configure the SIM card settings in the system, which is especially important if you are using two SIM cards or a memory card.

Open the Settings. → SIM-maps and mobile networks:

• 📞 Assign SIM cards names (such as “Worker” and “Personal”) for convenience.
• 📶 Select the default network for calls, SMS and mobile Internet.
• 🔄 Enable data switching (if one of the SIM cards does not catch) 4G).
• 🚫 Disable unnecessary operator services (e.g. paid subscriptions).

If you have a microSD installed, check it in Settings → Storage.

• 📁 Move applications to a memory card (not all programs support this feature).
• 📷 Change the default location for saving photos and videos.
• 🔄 Format the map (if necessary).

Note: if you use a microSD as internal memory (Adoptable Storage feature), it will not be retrievable without data loss. This mode is available in Settings → Storage → SD Card → Set up, but we recommend using it only when there is an acute shortage of space.

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If the smartphone does not catch the network after installing the SIM card, check whether the SIM card is activated from the operator. Sometimes new cards require registration in your personal account or by phone hotline.

Frequent questions and problems with SIM cards in Redmi 5A

Despite the simplicity of the process, users often face challenges, and let's look at some of the most common ones.

Video instructions and additional materials

If the text instruction seemed complicated, we recommend watching the video tutorial on installing a SIM card in Xiaomi Redmi 5A. The visual guide will help you avoid errors and quickly understand the process.

It is also useful to read the official documentation:

• 📄 Technical characteristics of Redmi 5A on the Xiaomi website (section "SIM Card").
• 📖 Forum MIUI — Here users share their experience of solving problems with SIM cards.

If you have questions after reading the article, check if there are any similar topics on the profile forums. Often the answer is already given, and you do not have to wait for help from specialists.

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Before buying Xiaomi Redmi 5A hand-check the work of both SIM cards and microSD slot. Often sellers are silent about the malfunctions that occur only after installing the second SIM or memory card.