Do I need to register my phone's IMEI to use this eSIM in Colombia?

No, not for short trips. Colombia has strict rules requiring local SIM cards to register their device's IMEI to prevent theft, or the phone gets blocked. However, Cellesim eSIMs operate on a roaming basis. This means you are treated as a "roaming tourist," bypassing the need for immediate local IMEI registration for stays typically under 30-60 days. It is the hassle-free way to get connected without fearing your phone will be locked.