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Redmi 12 5G Quick Start Guide

Quick start guide for the Redmi 12 5G smartphone, covering device setup, SIM card installation, charging requirements, and important safety precautions.

Quick answers from the manual

Quick answer

  • To set up your Redmi 12 5G, long press the power button to turn it on and follow the on-screen instructions. p. 4

Key actions

  • Power on p. 4
  • Insert SIM card p. 3

First start

  • Long press the power button to turn on the device and follow on-screen instructions. p. 4
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Technical specifications

Parameter Value Meaning Pages
Operating Temperature 0°C to 40°C Safe operating range p. 4
Max Charging Power 22.5W Maximum supported charging power p. 5

Where to find it in the PDF

  • Quick Start Guide p. 4
  • SIM Card Diagram p. 3
Table of contents

Quick Start Guide

To turn on your Redmi 12 5G, press and hold the power button. Follow the on-screen instructions to configure the device for the first time.

SIM Card Installation

The device supports Nano-SIM cards and MicroSD cards. Please refer to the diagram on page 3 for the correct orientation of the SIM and MicroSD cards in the tray. Do not insert non-standard SIM cards, as they may damage the SIM card slot.

SIM and MicroSD card tray layout
SIM and MicroSD card tray layout

Charging and Battery

Use only the included or authorized cable and power adapter to charge your device. Using unauthorized accessories may cause fire, explosion, or damage to the device.

  • Maximum Charging Power: 22.5W
  • Maximum Voltage: 10V
  • Maximum Current: 2.2A
  • Charging Limit: Do not charge the device for more than 12 hours.
  • Disconnection: After charging is complete, disconnect the adapter from both the device and the power outlet.

If the device has a built-in battery, do not attempt to replace it yourself. If the battery appears deformed or damaged, stop using it immediately and contact an authorized repair center.

Important Safety Information

Read all safety information before using your device:

  • Operating Temperature: The device operates within a range of 0°C to 40°C. Using the device outside this range may cause damage.
  • Hearing Protection: To prevent possible hearing damage, do not listen at high volume levels for long periods.
  • Handling: Do not disassemble, hit, crush, or burn the battery. Keep the device dry.
  • Medical Interference: Maintain a minimum distance of 15 cm between your mobile phone and pacemakers or other medical devices to avoid interference.
  • Environment: Do not use the phone in explosive atmospheres, such as petrol stations, or in areas where wireless devices are restricted.

Disposal and Recycling

This product must not be discarded with household waste in the EU. Please recycle responsibly to prevent harm to the environment or human health. Use return and collection systems or contact the retailer where the device was purchased.

This device can be operated in all EU member states. Wi-Fi connectivity may vary based on regional availability and local network support. Ensure that power adapters used are compliant with applicable country regulations and international safety standards.

Manufacturer information

Xiaomi Corporation

Brand profile

Practical help

Common problems

Device not charging

Ensure you are using the included or authorized cable and charger. Do not charge for more than 12 hours.

SIM card not recognized

Ensure you are using a standard Nano-SIM card and it is inserted correctly into the tray as shown in the diagram.

Before use

  • Charge the device using the included cable and charger.
  • Insert your SIM card correctly into the tray.
  • Follow on-screen instructions to configure the device.
  • Keep the device dry and within the operating temperature range (0°C to 40°C).
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Specs in practice

Operating Temperature
0°C to 40°C
Max Charging Power
22.5W

Images and diagrams

  • The diagram on page 3 illustrates the power button, volume buttons, USB-C port, and the layout for the Nano-SIM and MicroSD card tray.

Model compatibility

  • Use only authorized accessories compatible with your device.
  • Third-party chargers must comply with USB 2.0 or higher protocol standards and IEC 60950 or IEC 62368-1 safety standards.

Manual page author

Michael Turner

Technical manual editor

Reviews PDF manuals for structure, safety notes, and practical product details so readers can find the right information quickly.