Introdución
This manual provides essential information for the safe and efficient use of your Maxcom MM835 4G Dual SIM mobile phone. Please read it carefully before using the device and keep it for future reference.

Figure 1: Maxcom MM835 4G Dual SIM mobile phone, open, showing the internal screen and keypad.
Configuración
1. Desembalaxe e Inspección Inicial
Carefully remove all items from the packaging. Verify that all components listed in the 'What's in the Box' section are present and undamaged.
Vídeo 1: Rematadoview of the Maxcom MM835 4G Dual SIM mobile phone, showcasinas súas principais características e deseño.
2. Instalación da tarxeta SIM e da batería
The Maxcom MM835 supports Dual Nano SIM cards. To install:
- Retire con coidado a tapa traseira do teléfono.
- Insert the Nano SIM card(s) into the designated slot(s) with the gold contacts facing down. Ensure they are correctly seated.
- Introduza a batería no seu compartimento, aliñando os contactos.
- Volva colocar a tapa traseira ata que encaixe firmemente no seu lugar.
Note: SIM card insertion can be challenging. Use the provided SIM tray ejector if necessary.
3. Cargando o dispositivo
Before first use, fully charge the phone. Connect the USB Type-C cable to the phone's charging port and the other end to the power adapter. Plug the adapter into a wall outlet. The charging indicator will show the charging status.

Figura 2: Abaixo view of the Maxcom MM835 4G Dual SIM mobile phone, showing the USB-C port and microphone.
4. Acendido e configuración inicial
Press and hold the Power button until the screen lights up. Follow the on-screen prompts to select your preferred language and set the date and time.
Instrucións de funcionamento
1. Funcións de chamada básicas
- Facendo unha chamada: Open the phone, enter the phone number using the large keypad, and press the green call button.
- Respondendo a unha chamada: Open the phone to answer an incoming call. The external display shows caller ID.
- Finalizando unha chamada: Press the red end call button or close the phone.

Figura 3: Fronte view of the Maxcom MM835 4G Dual SIM mobile phone, closed, showing the external display with time and date.
2. Envío de mensaxes de texto
Navigate to the 'Messages' menu. Select 'New Message', enter the recipient's number or select from contacts, type your message using the keypad, and send.
3. Botón de emerxencia SOS
The MM835 features a dedicated SOS button for emergencies. When pressed and held, it will automatically dial pre-set emergency contacts and send an emergency SMS message.

Figure 4: Close-up of the Maxcom MM835 keypad, showing large buttons, an SOS emergency function, and an ICE button.
4. ICE (In Case of Emergency) Function
The ICE function allows you to store critical medical information and emergency contacts that can be accessed by first responders without unlocking the phone. Configure this in the phone settings.
5. Camera and FM Radio
- Cámara: Accede á cámara desde o menú principal para facer fotos.
- Radio FM: Plug in headphones (not included) to use as an antenna, then access the FM Radio application from the menu.

Figure 5: Maxcom MM835 4G Dual SIM mobile phone, highlighting features like camera, FM radio, and dual SIM capability.
6. Hearing Aid Compatibility (HAC)
The Maxcom MM835 is designed to be compatible with hearing aids, providing clear call quality for users with hearing impairments.

Figure 6: The Maxcom MM835 is designed for clear calls, especially for seniors and those with hearing aids.
Mantemento
1. Limpeza do dispositivo
Use a soft, dry cloth to clean the phone's exterior. Avoid using harsh chemicals or abrasive materials, as they may damage the surface. Keep the charging port free of dust and debris.
2. Coidado da batería
To prolong battery life, avoid exposing the phone to extreme temperatures. Do not leave the phone fully discharged for extended periods. Use only the original charger or a certified compatible charger.
3. Actualizacións de software
Periodically check for software updates in the phone's settings menu. Updates can improve performance, add new features, and enhance security.
Resolución de problemas
Se tes problemas co teu Maxcom MM835, consulta as seguintes solucións habituais:
- O teléfono non se acende: Ensure the battery is charged. Connect the charger and try again. If the issue persists, remove and reinsert the battery.
- Non se poden facer nin recibir chamadas: Check if the SIM card is correctly inserted and activated. Verify that you have network coverage. If the phone frequently switches to 'Emergency Call only' mode, this may indicate a network issue or a faulty SIM card. Try testing with a different SIM card or contacting your network provider.
- Baixa calidade das chamadas: Ensure you are in an area with good network signal. If using a headset, ensure it is properly connected.
- O teléfono non carga: Check the USB cable and power adapter for damage. Ensure the charging port is clean. Try using a different power outlet.
- O teclado non responde: Reinicia o teléfono. Se o problema persiste, ponte en contacto co servizo de atención ao cliente.
Video 2: Detailed close-up view of the Maxcom MM835 4G Dual SIM mobile phone, highlighting its physical features and build quality.
Especificacións
| Marca | Maxcom |
| Nome do modelo | MM835 |
| Sistema Operativo | Maxcom OS |
| Modelo CPU | Snapdragon |
| Capacidade de almacenamento interno | 32 GB (Max Flash Memory Supported) |
| Tamaño da pantalla principal | 3.5 polgadas |
| External Screen Size | 2.4 Inches (Estimated from max display resolution) |
| Resolución | 480 x 800 (Main), 320 x 240 (External) |
| Tecnoloxía Celular | 4G |
| Tecnoloxía de conectividade | 4G, GSM |
| Ranuras para tarxetas SIM | SIM dual |
| Tamaño da tarxeta SIM | Nano |
| Porto USB | USB tipo C |
| Conector para auriculares | 3.5 mm |
| Capacidade da batería | 1400 mAh |
| Tempo de conversa | 1400 minutos |
| Dimensións | 8 x 5 x 11 centímetros |
| Factor de forma | Teléfono Flip |
| Nivel de resistencia á auga | Non impermeable |
| Ano modelo | 2025 |
| País de Orixe | Portugal |
| O que hai na caixa | Power Adapter, USB Cable, SIM Tray Ejector |
Información da garantía
Your Maxcom MM835 mobile phone is covered by a standard manufacturer's warranty. Please refer to the warranty card included in your product packaging for specific terms, conditions, and duration. Keep your proof of purchase for any warranty claims.
Apoio
For further assistance, technical support, or service inquiries, please visit the official Maxcom websitio web ou póñase en contacto co seu departamento de atención ao cliente. Os datos de contacto adoitan atoparse na páxina web do fabricante websitio ou na embalaxe do produto.