Cell phone making random calls?

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SUMMARY

The discussion revolves around the issue of cell phones making random calls without user initiation, with participants sharing experiences and speculating on potential causes. Users reported instances where their phones called others without any record of the calls, raising concerns about possible viruses or interference from connected devices. One participant noted that their phone made unintended calls when using a Nokia handsfree set with a Samsung device, suggesting that hardware interactions could be a factor. Ultimately, the original poster resolved the issue by replacing their phone, indicating that persistent problems may require hardware solutions.

PREREQUISITES
  • Understanding of cell phone operating systems and functionalities
  • Familiarity with Bluetooth connectivity and its potential issues
  • Knowledge of mobile device security, including viruses and malware
  • Awareness of hardware compatibility between different phone brands
NEXT STEPS
  • Research mobile device security measures against viruses and malware
  • Learn about Bluetooth connectivity issues and troubleshooting techniques
  • Investigate hardware compatibility between different phone accessories
  • Explore methods for detecting and preventing phone cloning
USEFUL FOR

This discussion is beneficial for mobile phone users experiencing unexplained call behavior, tech support professionals addressing customer concerns, and anyone interested in mobile device security and troubleshooting.

Ivan Seeking
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Twice now I have been told that my cell phone has called someone without my knowledge. At first I assumed that I had bumped a button but I show no records of the outgoing calls in memory. I'm still waiting to see if the usage shows up on the bill. I have noticed from time to time that the display light comes on spontaneously while the phone is just sitting. I'm not sure what's happening here but it seems to be interesting. Both people could hear me and showed my number on their caller ID.
 
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Virus?

Could be a virus. There have been cases of CELL PHONE/ PDA/ Handheald Computer viruses. Some can even be trasmitted to other devices without anyone knowing (through bluetooth).
 
The only time that my cell phone has made calls without me initiating them were when I tried to plug in a Nokia handsfree set into my Samsung. It would automatically bring up the recently called list, and call the first number on it. It did show up on my usage bill, too, so the problem may not be the same. It's prolly some interference from a device that's either plugged into your phone, or is near it. Maybe a virus, too.
 
Did you ever figure it out?

Just wondering, did you ever figure out why your phone made these calls? I ask becuse I am on the receiving end of a cell phone making random calls. I get calls from the same cell phone at all hours of the day and night - at least 3 times a week for the last 6+ months. I can hear people in the background, but there is never anyone on the phone. I've called the guy back a few times to tell him about these phone calls, but he is unaware of them happening. (And of course, the phone company won't do anything)

Were you ever able to stop the calls?
 
Has someone perhaps cloned your phone?
 
Wow, this is an old thread. No, never figured it out. I just pitched the phone and got a new one.
 
Most likely this can only be answered by an "old timer". I am making measurements on an uA709 op amp (metal can). I would like to calculate the frequency rolloff curves (I can measure them). I assume the compensation is via the miller effect. To do the calculations I would need to know the gain of the transistors and the effective resistance seen at the compensation terminals, not including the values I put there. Anyone know those values?

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