Brand: BOSCH
Category: Other
Document Type: Manual
Language: EN
Manual for GSM 509
Uploaded: April 20, 2026, 8:12 p.m.
Manual Publish Date: 1999-09-01
Warranty Information
None
Preparing your phone
- Insert rechargeable battery: Phone should be switched off.
- Charge the battery: Takes 1.5 to 6.5 hours. Can be used while charging.
- Insert SIM card: Ensure no plastic remains. Open holder, place SIM, close holder, insert battery, switch on. Enter PIN if requested.
Making your first call
- Enter phone number.
- Press CALL.
- Press END to end call.
- Use arrow keys to adjust volume.
Answering a call
- Press ANSWER.
- Press END to end call.
Emergency calls: Dial 112 (with or without SIM card).
Troubleshooting and error codes
| Problem | Possible Cause | Solution |
|---|---|---|
| Phone does not switch on. | Battery not inserted correctly or discharged. | Check battery insertion. Charge the battery. |
| Cannot make calls. | SIM card not inserted or not recognized. Network issue. | Check SIM card insertion. Ensure phone is in a network area. Contact network operator. |
| Cannot receive calls. | Call divert active. Network issue. | Check call divert settings. Contact network operator. |
| Display shows "Please redial later". | Network cannot establish contact. | Try again later. |
| Display shows "SIM card blocked". | Invalid PIN entered too many times. | Enter PUK code to unblock. Contact network operator if PUK code is lost. |