Xiaomi Redmi 12 4G LTE
Xiaomi Redmi 12 4G LTE User Manual
Model: Redmi 12 4G LTE | Brand: Xiaomi
1. Introdución
The Xiaomi Redmi 12 4G LTE is a feature-rich smartphone designed for everyday use. It boasts a large 90Hz FHD+ display, a premium glass back design, and a powerful MediaTek Helio G88 Octa-core processor. This manual provides essential information on setting up, operating, maintaining, and troubleshooting your device.

Figura 1: Parte dianteira e traseira view of the Xiaomi Redmi 12 4G LTE in Polar Silver.
2. Que hai na caixa
Upon unboxing your Xiaomi Redmi 12 4G LTE, verify that all the following items are included:
- Xiaomi Redmi 12 4G LTE Smartphone
- Cargador de coche rápido
- Adaptador
- Funda do teléfono
- Cable USB
3. Configuración
3.1. Instalación da tarxeta SIM e do almacenamento
The Redmi 12 4G LTE supports dual Nano SIM cards or a hybrid slot for one SIM and one MicroSD card (up to 1TB expandable storage). To install:
- Localiza a bandexa da tarxeta SIM no lateral do dispositivo.
- Insira a ferramenta de expulsión da tarxeta SIM no pequeno orificio que hai xunto á bandexa e empurre suavemente ata que esta saia.
- Place your Nano SIM card(s) and/or MicroSD card into the designated slots on the tray. Ensure proper orientation.
- Empurre con coidado a bandexa de volta no dispositivo ata que quede ao mesmo nivel que o lateral.
3.2. Carga inicial
Before first use, it is recommended to fully charge your device. Use the provided adapter and USB cable. The device features a large 5000mAh battery and supports 18W fast charging.
3.3. Acendido e configuración inicial
Press and hold the power button until the Xiaomi logo appears. Follow the on-screen prompts to select your language, connect to Wi-Fi, and set up your Google account. The device runs on MIUI 14 based on Android 13.
4. Instrucións de funcionamento
4.1. Pantalla e navegación
The Redmi 12 features a 6.79-inch FHD+ DotDisplay with a 90Hz AdaptiveSync refresh rate for smooth visuals. It also includes SGS Low Blue Light Certification and Reading mode 3.0 for eye comfort. Navigate using the touchscreen and on-screen buttons.
4.2. Características da cámara
Capture high-quality photos and videos with the triple camera system:
- Cámara principal de 50 MP: f/1.8 aperture for detailed shots.
- Cámara ultra gran angular de 8 MP: 120° FOV, f/2.2 for expansive scenes.
- Cámara macro de 2MP: f/2.4 for close-up photography.
Rear camera video recording supports 1080P at 30fps and 720P at 30fps.

Figure 2: Rear camera module of the Xiaomi Redmi 12 4G LTE.
4.3. Rendemento e almacenamento
Powered by the MediaTek Helio G88 Octa-core processor, the device offers smooth performance for daily tasks. It comes with 4GB RAM and 128GB of internal storage, expandable up to 1TB via MicroSD card.
4.4. Audio e conectividade
The Redmi 12 features a 3.5mm headphone jack for wired audio and supports FM radio. Wireless connectivity includes Wi-Fi (2.4GHz | 5GHz) and Bluetooth 5.3. For navigation, it supports GPS, Glonass, Galileo, and Beidou.
4.5. Características de seguridade
Unlock your device securely using the side-mounted fingerprint sensor or AI face unlock.
5. Mantemento
5.1. Coidado da batería
To maximize battery life, avoid extreme temperatures. Use only the provided or certified charging accessories. Regular full charge cycles are recommended, but avoid leaving the device plugged in for extended periods after reaching 100%.
5.2. Limpeza do dispositivo
Clean the screen and body with a soft, lint-free cloth. Avoid using harsh chemicals or abrasive materials that could damage the device's finish or screen coating.
6 Solución de problemas
6.1. Network Connectivity Issues (USA Market)
Please note that for the USA market, this global version of the Redmi 12 4G LTE is designed to work specifically on T-Mobile, Mint, and Tello networks. If you experience issues with mobile data or calls on other carriers, verify your network compatibility. Ensure your SIM card is properly inserted and your APN settings are correctly configured for your carrier.
6.2. Slow Performance or App Switching Delays
While the MediaTek Helio G88 processor provides good performance for everyday use, occasional slowdowns may occur, especially when switching between multiple demanding applications. To improve performance:
- Pecha as aplicacións en segundo plano que non uses.
- Clear app caches regularly.
- Asegúrate de ter espazo de almacenamento libre suficiente.
- Reinicie o dispositivo periodicamente.
7. Especificacións
| Característica | Detalle |
|---|---|
| Nome do modelo | Redmi 12 4G LTE |
| Marca | Xiaomi |
| Sistema Operativo | MIUI 14 baseado en Android 13 |
| Tamaño da pantalla | 6.79 polgadas |
| Resolución | 2460 x 1080 |
| Taxa de actualización | 90 Hz |
| Modelo CPU | MediaTek Helio G88 de oito núcleos |
| RAM | 4 GB |
| Capacidade de almacenamento da memoria | 128 GB (ampliable ata 1 TB) |
| Capacidade da batería | 5000 mAh |
| Cámara principal | Cámara tripla de 50 MP |
| Jack de audio | 3.5 mm |
| Conectividade | USB-C, Wi-Fi (2.4/5GHz), Bluetooth 5.3 |
| Seguridade | Side Fingerprint Sensor, AI Face Unlock |
| Peso do elemento | 7 onzas |
| Cor | Polar Silver |
8. Garantía e soporte
Para obter información sobre a garantía e asistencia técnica, consulte a páxina oficial de Xiaomi. websitio web ou póñase en contacto co servizo de atención ao cliente. Garde o comprobante de compra para calquera reclamación de garantía.
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