Brand: SIEMENS
Category: Mobile Phone
Document Type: Manual
Language: EN
Manual for A55
Uploaded: Nov. 21, 2025, 8:39 p.m.
Warranty Information
Manufacturer's Guarantee covers manufacturing/material faults for 24 months, or 6 months for wear and tear parts.
- Making a phone call: Dial numbers using the keypad or redial previous numbers. End calls with the End key. Adjust volume during a call.
- Accepting/Rejecting calls: Reply to incoming calls or reject them.
- Handsfree: Activate handsfree function to talk without holding the phone.
- Call waiting/Swap: Accept or reject a second incoming call, and swap between calls.
- Conference: Link up to 5 parties for a conference call.
- Security: Protect your phone and SIM card with PIN codes and phone codes.
- Settings: Customize ringtones, display, language, and other phone settings.
Troubleshooting and error codes
| Problem | Possible Cause | Solution |
|---|---|---|
| Phone does not switch on. | Battery is discharged. | Charge battery. |
| Cannot make or receive calls. | No network access. SIM card not inserted/invalid. | Check signal strength. Insert SIM card correctly. Contact service provider. |
| PIN entry incorrect. | Incorrect PIN entered. | Enter correct PIN. If locked, use PUK code. |
| Cannot send SMS. | SMS service not activated. | Contact service provider. |