The following information can be seen on the screen of an electronic cigarette:

• Power - expressed in watts. This is important information because each heating element has its own power range that needs to be followed. If the power is too high for the atomizer, it can lead to a deterioration of the taste of the liquid or even damage the heating element or wick.
• Ohm meter - showing the coil resistance in ohms. This information is important for monitoring the condition of the atomizer during use, as the resistance value can change depending on temperature and other factors.
  
• Battery level indicator - showing the remaining battery charge. This allows you to know when to charge the batteries so that you don't run out of charge at the most inconvenient time.
  
• Voltmeter - displaying the voltage used by each battery in real time. This allows you to know how much current the battery is using during use.
  
• Vaping modes - showing the type of vaping used, such as power mode, temperature control mode, and others. This allows users to adjust vaping parameters according to their preferences.

There are several vaping modes in electronic cigarettes:

1. VW mode (Variable Wattage) - allows the user to adjust the heating power of the atomizer in watts. This mode is the most common and usually recommended for most users.
2. VV mode (Variable Voltage) - this is one of the operating modes of electronic cigarettes that allows the user to adjust the output voltage and therefore the device's power. In this mode, the device operates at a constant output voltage, regardless of changes in the resistance of the atomizer. In other words, if in VW mode you adjust the power delivered to the heating element, in VV mode you regulate the output power of the battery.
3. TC mode (Temperature Control) - allows you to set the desired heating temperature, maintain and not exceed it during vaping. This mode is recommended for users who want to achieve more precise control over vaping.
4. Bypass mode (mechanical mode) - directly connects the battery and the heating element, allowing you to get the maximum power possible. This mode is recommended for experienced users who know how to properly control power and resistance. However, protections are still present and working, unlike mechanical mods.
5. Curve mode: allows to adjust the power curve up to every 0.5 seconds, meaning changing the output power during the inhale. For example, you can set it up during inhale as follows: 1 second - 80 watts; 2 seconds - 90 watts, and 3 seconds - 110 watts, resulting in a smoother inhale. This mode can be useful for getting a more intense flavor or saving battery life.
6. Replay mode - this is a mode of operation of an electronic cigarette that allows you to repeat the previous vaping session. This mode saves data about the last inhale, including power, temperature, and vaping time, and replays them the next time the device is used. Replay mode is especially useful for users who are looking for consistency in flavor and vapor and want to avoid dry hits.

There are also secondary operating modes that can be combined with the primary ones:

• Preheat mode: allows to adjust the power of the first second of the inhale. This mode can slow down or speed up the coil heating and improve performance.
  
• Memory mode: allows users to save their settings for quick access in the future. This mode can be useful for those who prefer certain vaping settings.

The choice of vaping mode depends on personal preferences and user needs. It is recommended to experiment with different modes and settings to find what works best for the specific device and coil type.