I think there’s an option that you can select to keep the number for WhatsApp when swapped into the new SIM card. But there was years ago when I tried, now not sure.can i check.
i intending to get malaysia number sim card for malaysia usage.
lets say if i keep swapping my sim card from SG SIMCARD and MSIA Simcard vice versa.
will my whatsapp message all be gone since im also changing to the malaysia number too