Yes. Messaging apps are tied to your account and your usual number, not to the SIM doing the data.
WhatsApp, Telegram, Signal
Nothing to change. Don't re-verify or change your number in the app. Just use them as normal once kimsim is your data line.
iMessage and FaceTime (iPhone)
- Settings → Messages → Send & Receive. Make sure your usual number is ticked.
- Settings → FaceTime → check the same under "You can be reached by FaceTime at".
- If the iPhone asks which line to use for iMessage and FaceTime, choose your home line.
Normal texts
SMS isn't included with kimsim. Those still come in on your home SIM, at your home carrier's rates. Calls and texts.