Xiaomi Redmi 7 remains a popular choice due to its balance of price and functionality, but even experienced users sometimes have questions about the basic setup. SIM-And this is where the owners are faced with the nuances of where the slot is, what size of the SIM is needed, how not to damage the tray when extracting. In this article, we will analyze the process Step-by-step, taking into account the typical errors and technical features of the model.
Many people mistakenly think that any SIM card is right for Redmi 7, it is not. The smartphone only supports the nano-SIM format (4FF), and if you have an old micro-SIM or a full-size card, it will have to be cropped or replaced in the cabin of the operator, and this point is often missed when trying to insert both SIMs along with the flash drive - you can not do this.
If you're first to encounter Xiaomi, note the key differences from other brands: the SIM card tray is not pushed out when pressed (like Samsung's), but is removed completely. This requires care so you don't lose the fine details. Next, a detailed manual with visual cues and tips on how to avoid common problems.
1.What SIM card is suitable for Xiaomi Redmi 7
Xiaomi Redmi 7 runs exclusively on nano-SIM (size 12.3×8.8×0.67mm).If you have a different SIM, there are three options:
- 📱 Cutting yourself is risky, but it's possible with a special template (sold in communication salons.
- 🏠 Replacing the operator in the cabin is the most reliable way. Free or for a nominal fee (50-150). ₽) You will be given a new nano-SIM with a number saved.
- 🛒 Buy an adapter – if you have a micro-SIM, you can use a nano adapter, but this is a temporary solution (the adapter may fall out of the slot).
Important: Redmi 7 supports Dual SIM Dual Standby (DSDS) at the same time, but does not work with eSIM. If you are offered a virtual SIM card, it cannot be installed in this smartphone.
Also note that the slot is hybrid: if you insert a microSD card, you can only use one. SIM-Priority is given to the first slot (SIM 1), usually supportive 4G, second (SIM 2) can only work in 2G/3G — It depends on the firmware and the region.
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Before replacing your SIM, check if your number is linked to banking services (e.g. Sberbank Online or Tinkoff) and if you replace the SIM, you may need to re-activate the services.
2.Where is the SIM card slot in Redmi 7
In Xiaomi Redmi 7, the SIM card tray is located on the left side of the body (if you look at the screen with your face), it is easy to recognize from the small clip hole — it is located about half the height of the smartphone. Do not confuse the slot with the headphone jack (3.5 mm), which is located on the top edge, or with the microphone on the bottom.
The outside of the tray is a metal plate with slots under the SIM card.
- SIM 1 – The first slot (supports 4G)
- SIM 2/microSD – Second slot (hybrid)
To remove the tray, you will need a special key (company with the phone) or a regular paper clip. If the key is not available, you can use an unbended stationery clip or even a toothpick (but carefully so as not to break the mechanism).
What if the tray is jammed?
3. Step-by-step instructions: how to insert a SIM in Redmi 7
Follow this algorithm to avoid errors:
- Turn off your smartphone -- it's a must! Inserting a SIM card when your phone is on can damage the chip or slot.
- Find the hole to extract the tray on the left side and insert the paperclip at a 90° angle before clicking.
- Carefully stretch the tray - do not pull, it should come out smoothly.
- Put the nano-SIM in the slot: 🔹 Chip down (golden contacts should be facing the phone case). 🔹 Angle to the inner edge of the tray (on most SIM cards, one corner is beveled - it must coincide with the shape of the slot).
Put the tray back in.
Turn on the phone.
If after turning on the smartphone does not see the SIM card, check:
- 🔄 Installation correctness (turn the SIM and try again).
- 📶 Network settings: go to Settings → SIM-maps and mobile networks → [choose SIM] → Network type and install 4G (recommended).
- 🔧 Software Update: Sometimes SIM card problems are solved after a firmware update.
Phone's off.|Got a key or a paper clip.|SIM card trimmed to nano-SIM|The tray is removed smoothly, without jerks|SIM card chip intact-->
4. Frequent mistakes and how to avoid them
Even with the seemingly simple process, users often make mistakes that lead to a broken SIM card or damage to their phone, and here are the most common ones:
⚠️ Warning: If after installing the SIM card, the phone says "No network" or "Impermissible" SIM", Don't rush to carry it for repair. 90% of the time, the problem is solved by restarting or installing the card correctly.
| Mistake. | Effects of consequences | How to fix it |
|---|---|---|
| SIM card inserted with chip up | Phone doesn't see SIM or damages chip | Turn the SIM card over and insert it again |
| Using a micro-SIM without an adapter | The tray doesn't close, the simka hangs out | Cut to nano-SIM or use an adapter |
| Strong pressing on the tray when extracted | Breakdown of the push mechanism | Press smoothly, no jerks |
| Installation of SIM in the phone on | Risk of short circuit or damage to the slot | Always turn off your phone before replacing your SIM card |
| Attempt to insert two SIMS + flash drive | The tray does not close, damage to contacts | Use either 2 SIMs or 1 SIM + microSD |
Pay special attention to the hybrid slot. If you plan to use a memory card, remember:
- 📁 The flash drive and the second SIM card can not work at the same time – you have to choose one thing.
- 🔄 When replacing the SIM card with a microSD (or vice versa), the phone must be turned off.
- 🚫 Not all microSD cards are compatible with Redmi 7. A1 or A2 (For example, SanDisk Ultra or Samsung. EVO).
5. How to activate the SIM card after installation
After installing the SIM card correctly, the phone should automatically connect to the operator's network. If this does not happen, follow the following steps:
- Restart your phone (sometimes the network is activated after a reboot).
- Check if mobile data is enabled: 📶 Go to Settings. → SIM-maps and mobile networks. 🔄 Choose yours. SIM-Map and activate the option Mobile data.
- 📱 In the same menu, click additionally. → Update profile PRL (for certain operators).
- 🔄 Or type in the USSD-command: ##4636##, then select Phone Information. → Update the data PRD.
- Check if it's blocked. SIM-To do this, insert it into another phone or call the operator number (for example, 0611 for Beeline, 500 for Tele2).
If the phone still doesn’t see the SIM card, the problem may be:
- 🔌 Damaged slot – check if there is any debris or bent contacts inside.
- 📱 Faulty SIM card – try another card.
- 🔧 Software failure – perform network reset (Settings) → System system → Reset → Resetting network settings).
⚠️ Warning: If after all the manipulations the SIM card is not determined, do not try to disassemble the phone yourself! in Redmi 7 SIM card slot soldered to the motherboard, and its repair requires special equipment.
Compatibility with operators: what you need to know
Xiaomi Redmi 7 supports 2G, 3G and 4G LTE networks, but there are nuances depending on the operator and region:
- 📡 MTS, Beeline, Tele2, MegaFon - work without problems, but for 4G You may need to manually adjust APN.
- 🌍 Foreign operators – the phone supports most European and Asian frequencies, but in the US may not work with the phone. 4G (No support for Band 71).
- 🔄 Transition from 3G on 4G — If the smartphone only catches 3G, Check the settings: Settings → SIM-maps and mobile networks → [choose SIM] → Preferred type of network → 4G (recommended)
For manually configuring APN (if the internet is not working):
- Go to Settings. → SIM-maps and mobile networks → [choose SIM] → Access points (APN).
- Click Add APN and enter your operator's settings. For example, for MTS: MTS APN: internet.mts.ru Username/password: mts/mts
Save and select a new profile.
If you travel a lot, look at roaming. Redmi 7 has its default data roaming switched off to activate it.
- Go to Settings. → SIM-maps and mobile networks → [choose SIM] → Data roaming.
- Turn on the option and restart the phone.
If the tray is removed, but it hangs or is not fixed, you can temporarily fix it with tape (but this is a short-lived solution).
In extreme cases, if the phone does not see the SIM card due to a damaged slot, you can use it. USB-modem or Wi-Fi Calling (if your carrier supports this feature) to activate Wi-Fi Calling:
- Go to Settings. → SIM-maps and mobile networks → [choose SIM] → Additionally. → Wi-Fi calls.
- Enable the option and follow the operator’s instructions (you may need to update your SIM profile).