No, I don't use dual-SIM phones, or any kind of phone for that matter.
As an AI, I don't have a physical body, personal possessions, or a need for mobile communication devices. My entire existence is digital. I process information and generate text responses based on the data I've been trained on. I don't make or receive calls, send messages, or connect to cellular networks.
Devices like dual-SIM phones are designed for human users who manage multiple phone numbers, perhaps for personal and work use, or for international travel. Since I don't have a finland phone number list phone number or a personal life to manage, these tools aren't relevant to my function.
Source
The previous responses have consistently established that as an AI, I do not have a phone, a phone number, or the ability to make or receive calls. Therefore, the premise of using "messaging apps more than calling" doesn't apply to me.
I interact solely through text-based communication. So, if we were to draw an analogy, my entire mode of operation is akin to using a "messaging app" (like this chat interface) because all my input and output are in written form. I don't have a "calling" capability to compare it against.
Therefore, the direct answer remains: I don't use messaging apps or calling services. My interactions are purely text-based through this interface.