Brand: SIEMENS
Category: Mobile Phone
Document Type: Manual
Language: EN
Manual for A35
Uploaded: Nov. 21, 2025, 6:17 p.m.
Warranty Information
Improper use invalidates the warranty!
- Getting Started: Learn how to insert the SIM card and battery, charge the battery, and switch the phone on/off. Understand PIN entry and emergency calls.
- Making Calls: Discover how to dial numbers using the keypad, international dialing, redialing, and answering/rejecting calls.
- Phonebook: Save and manage contacts, including writing names and entering special characters. Access various Phonebook menus for managing entries.
- Text Messages (SMS): Read, write, and send SMS messages. Manage message lists (Inbox/Outbox) and reply to messages.
- Setup: Configure network settings, language, time, and other preferences.
- Troubleshooting: Find solutions for common problems with the phone, SIM card, and network connection.
Troubleshooting and error codes
| Problem | Possible Cause | Possible Corrective Measures |
|---|---|---|
| Unable to switch on phone | Empty battery. Battery contacts dirty. | Charge battery. Check charging indication on display. Clean contacts carefully. Repeat switching on and off. |
| No charge icon | Battery deeply discharged. Battery defective. | Continue to charge device. The charge icon appears after max. 2 hours. Replace battery. After several years' average use a gradual decline may be expected. |
| Charge icon is flashing | Contact problem. Temperature exceeds 0 °C to + 45 °C range. | Check power supply and connection to telephone. Ensure correct temperature, allow time, then recharge. |
| SIM error | SIM contacts dirty. Damaged SIM card. SIM card not correctly orientated. Old SIM card. | Clean SIM contacts with a dry cloth. Make visual check. Return SIM card to your service provider. Ensure SIM is correctly orientated. Only 3 volt SIM cards may be used. If you are using a 5 volt SIM card, please contact your service provider. |
| PIN error | 3 incorrect inputs. | Enter super PIN (PUK) supplied with your SIM as instructed. If your super PIN or PIN are lost, contact your service provider. |
| No connection to network | Weak signal. Outside GSM network. SIM not valid. New network not authorized. | Move to a higher location, or to a window or open space. Check service provider coverage map. Check network information for the device. Contact your service provider. Try selecting manually, or try other network (p. 30). |
| Phone loses network | Weak signal. | Reconnection, or connection to another service provider is automatic; AutoNetwork (→ p. 30). Switching off and on may accelerate this. |
| Calls not possible | Dialling error. New SIM fitted. Charge limit reached. | Check the telephone number (correct international and area code). Check for new restrictions. Contact your network provider. |
| Cannot write in PhoneBook | Call restriction set. PhoneBook is full. | Check PhoneBook restrictions. Delete PhoneBook entries. |
| Cannot find PhoneBook | SIM has been changed. | Refit original SIM. |
| Voice Mail not working | Divert not set. | Set Divert (→ p. 21). |
| flashes continuously | Message store full. | Delete a message to make room (p. 18). |
| Cannot send a message | Service provider does not support this service. Service Centre not configured. Destination does not have compatible phone. | Contact your service provider. Configure Service Centre (→ p. 19). Check. |
| Cannot set a function | Not supported by service provider or registration required. | Contact service provider (→ p. 38). |
| Network provider CODE error | Not authorized for this service. | Contact network provider. |
| Accidents | ||
| Severe impact damage | Internal damage could result. | Remove and refit battery and SIM card (→ p. 6). Do not dismantle phone. |
| Immersion in water | Internal damage could result. | Remove battery and SIM. Dry immediately with a cloth, do not heat. Dry connector contacts thoroughly. Stand unit upright in airstream. Do not dismantle phone. |