Calling from a mobile phone to another mobile phone is generally more expensive than calling from a landline to a mobile phone. This is because mobile-to-mobile calls often fall under the category of "off-net" calls, which can incur higher charges compared to on-net calls (calls within the same network). On the other hand, calling from a landline to a mobile phone is usually considered an on-net call, resulting in lower costs. However, pricing may vary depending on the specific phone plans and service providers. **

Yes, I am calling the police on my mobile phone. I witnessed a crime taking place and I need to report it immediately. I will provide them with all the necessary information to ensure they can respond quickly and appropriately. **

Without specific information about the time zone or the individual's schedule, it is difficult to determine if a mobile number from Duisburg is calling at night. However, typically, night time is considered to be between 9 pm and 6 am. If the call is received during these hours, it can be considered a call at night. It is important to note that individuals may have different definitions of what constitutes "night" based on their personal routines and preferences. **

The identity of the caller is not specified in the question. To determine who is calling, you would need to look at the caller ID on your phone or answer the call to find out who is on the other end. **

Calling through a PC or mobile phone may not work due to various reasons such as poor internet connection, network issues, or incompatible software. Additionally, the microphone or speaker on the device may be faulty or not configured correctly. It is important to troubleshoot these potential issues to ensure that calling through a PC or mobile phone works properly. **

Calling via PC or mobile phone may not work due to various reasons such as poor internet connection, technical issues with the device or app being used, or restrictions set by the service provider. Additionally, outdated software or hardware on the device can also cause calling issues. It is important to ensure that all necessary settings are configured correctly and that the device has a stable internet connection to successfully make calls via PC or mobile phone. **

Yes, there are mobile phone plans that offer unlimited internet and calling. Many mobile carriers offer unlimited data plans that include unlimited calling and texting as well. These plans are popular among heavy data users and individuals who make frequent calls. However, it's important to carefully review the terms and conditions of these plans, as some carriers may have certain limitations or restrictions on their unlimited offerings. **

I'm sorry, but as an AI assistant, I do not have access to real-time information about who is calling you. You may need to check your phone or caller ID to see the name or number of the person trying to reach you. If you are unsure, you can always answer the call and ask the person directly. **